echo planar imaging
Summary: A type of MAGNETIC RESONANCE IMAGING that uses only one nuclear spin excitation per image and therefore can obtain images in a fraction of a second rather than the minutes required in traditional MRI techniques. It is used in a variety of medical and scientific applications.
Publications240 found, 100 shown here
- Image distortion correction in fMRI: A quantitative evaluationChloe Hutton
Wellcome Department of Cognitive Neurology, Institute of Neurology, London WCIN 3BG, United Kingdom
Neuroimage 16:217-40. 2002..However, we suggest that the variance between successively measured field maps introduces additional unwanted variance in the voxel time-series and is therefore not adequate to correct for time-varying distortions...
- Modeling geometric deformations in EPI time seriesJ L Andersson
The Wellcome Department of Cognitive Neurology, London, United Kingdom
Neuroimage 13:903-19. 2001..An experiment on a subject performing voluntary movements in the scanner yielded plausible estimates of the deformation fields and their application to "unwarp" the time series significantly reduced movement-related variance...
- Head and neck lesions: characterization with diffusion-weighted echo-planar MR imagingJ Wang
Department of Radiology, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, Nagano 390-8621, Japan
Radiology 220:621-30. 2001..22 x 10(-3) mm(2)/sec was used for predicting malignancy, the highest accuracy of 86%, with 84% sensitivity and 91% specificity, was obtained. CONCLUSION: Measurement of ADCs may be used to characterize head and neck lesions...
- Efficient correction of inhomogeneous static magnetic field-induced distortion in Echo Planar ImagingDominic Holland
Multimodal Imaging Laboratory, The University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92037, USA
Neuroimage 50:175-83. 2010Single-shot Echo Planar Imaging (EPI) is one of the most efficient magnetic resonance imaging (MRI) acquisition schemes, producing relatively high-definition images in 100 ms or less...
- Functional anatomy of impaired selective attention and compensatory processing in autismMatthew K Belmonte
Cognitive Neuroimaging Laboratory, McLean Hospital, Belmont, MA 02478 1048, USA
Brain Res Cogn Brain Res 17:651-64. 2003..These low-level attentional traits may be the developmental basis for higher-order cognitive styles such as weak central coherence...
- Characterization of focal liver lesions by ADC measurements using a respiratory triggered diffusion-weighted single-shot echo-planar MR imaging techniqueMelanie Bruegel
Department of Radiology, Klinikum rechts der Isar, Technische Universitat Munchen, Ismaninger Str 22, 81675 Munich, Germany
Eur Radiol 18:477-85. 2008..63 x 10(-3)mm2/s. Measurements of the ADCs of focal liver lesions on the basis of a respiratory triggered DW-SS-EPI sequence may constitute a useful supplementary method for lesion characterization...
- Lymphomas and high-grade astrocytomas: comparison of water diffusibility and histologic characteristicsAlexander C Guo
Department of Radiology, Duke University Medical Center, Box 3808, Durham, NC 27710, USA
Radiology 224:177-83. 2002..To determine if water diffusivity within lymphomas and high-grade astrocytomas correlates with cellularity...
- Single-shot compensation of image distortions and BOLD contrast optimization using multi-echo EPI for real-time fMRINikolaus Weiskopf
Institute of Medical Psychology and Behavioral Neurobiology, University of Tubingen, Tubingen, Germany
Neuroimage 24:1068-79. 2005..Significant reduction in geometric distortion is shown both for phantom images and human fMRI data. Moreover, sensitivity to the blood oxygen level-dependent (BOLD) effect is increased by weighted summation of the undistorted images...
- Optimized EPI for fMRI studies of the orbitofrontal cortexR Deichmann
Wellcome Department of Imaging Neuroscience, Institute of Neurology, London WC1N 3BG, UK
Neuroimage 19:430-41. 2003A common problem in gradient-echo echo planar imaging (EPI) is the occurrence of image distortions and signal losses caused by susceptibility gradients near air/tissue interfaces...
- Echo planar imaging at 4 Tesla with minimum acoustic noiseDardo G Tomasi
Medical Department, Brookhaven National Laboratory, Upton, New York 11973, USA
J Magn Reson Imaging 18:128-30. 2003To minimize the acoustic sound pressure levels of single-shot echo planar imaging (EPI) acquisitions on high magnetic field MRI scanners.
- Rapid T(1) mapping using multislice echo planar imagingS Clare
Centre for Functional Magnetic Resonance Imaging of the Brain, Department of Clinical Neurology, University of Oxford, Oxford, UK
Magn Reson Med 45:630-4. 2001..In this study, clinically acceptable images are obtained by using single-shot echo planar imaging (EPI) with an acquisition scheme that maximizes signal-to-noise while minimizing the scan time...
- Validation of fast MR thermometry at 1.5 T with gradient-echo echo planar imaging sequences: phantom and clinical feasibility studiesAlexandru Cernicanu
Department of Radiology, Geneva University Hospital, Switzerland
NMR Biomed 21:849-58. 2008..5 T with segmented gradient-echo echo planar imaging (GRE-EPI) sequences during liver tumour radiofrequency (RF) ablation...
- Short-scan-time multi-slice diffusion MRI of the mouse cervical spinal cord using echo planar imagingVirginie Callot
Centre de Résonance Magnétique Biologique et Médicale CRMBM, UMR CNRS No 6612, Faculte de Medecine de Marseille, Universite de la Mediterranee, Marseille, France
NMR Biomed 21:868-77. 2008..The purpose of this work was to investigate whether the use of echo planar imaging (EPI) would provide good-quality diffusion MR images of mouse SC, as well as accurate measurements of ..
- Compensation of susceptibility-induced BOLD sensitivity losses in echo-planar fMRI imagingR Deichmann
Institute of Neurology, Wellcome Department of Cognitive Neurology, London WC1N 3BG, United Kingdom
Neuroimage 15:120-35. 2002..The results suggest that the compensation method allows for the detection of activation in brain areas which are usually unavailable for BOLD studies...
- "Silent" MRI with soft gradient pulsesF Hennel
FORENAP, MR Center, Rouffach, France
Magn Reson Med 42:6-10. 1999..High-quality images could be acquired at noise levels as low as 40 dBA (GE and SE) and 60 dBA (RARE)...
- Functional MRI using sensitivity-encoded echo planar imaging (SENSE-EPI)Christine Preibisch
Department of Neuroradiology, University Frankfurt, Frankfurt, Germany
Neuroimage 19:412-21. 2003..Thus, SENSE-EPI allows to substantially increase speed and spatial resolution in fMRI. At SENSE reduction factors up to R = 2, the potential drawbacks regarding signal-to-noise and statistical power are almost negligible...
- In vivo diffusion measurements as an indication of fetal lung maturation using echo planar imaging at 0.5TR J Moore
Magnetic Resonance Centre, School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD, UK
Magn Reson Med 45:247-53. 2001..This model predicted the in vivo data reasonably well, and indicated that MR measurements of fetal lung diffusion are a marker for the degree of vascularization of the terminal tubules. Magn Reson Med 45:247-253, 2001...
- Quantifying the spatial resolution of the gradient echo and spin echo BOLD response at 3 TeslaLaura M Parkes
F C Donders Centre for Cognitive Neuroimaging, University of Nijmegen, The Netherlands
Magn Reson Med 54:1465-72. 2005..The spin echo response shows a 13% reduction in the width of the PSF, but at a cost of at least 3-fold reduction in contrast to noise ratio...
- MRI receiver frequency response as a contributor to Nyquist ghosting in echo planar imagingIoannis Delakis
Department of Bioengineering, Imperial College London, Exhibition Road, South Kensington, London SW7 2AZ, United Kingdom
J Magn Reson Imaging 22:324-8. 2005..To study the frequency response characteristic of the MRI signal receiver system as a contributing factor to the formation of Nyquist ghosting in echo-planar imaging (EPI)...
- Diffusion-weighted magnetic resonance imaging for monitoring diffusion changes in rectal carcinoma during combined, preoperative chemoradiation: preliminary results of a prospective studyPatrick A Hein
Department of Radiotherapy and Radiooncology, University of Innsbruck, Innsbruck, Austria
Eur J Radiol 45:214-22. 2003..To evaluate the clinical value of diffusion-weighted magnetic resonance imaging (DW-MRI) to monitor response of primary carcinoma of the rectum to preoperative chemoradiation by measuring tumor apparent diffusion coefficient (ADC)...
- Detection of head and neck squamous cell carcinoma with diffusion weighted MRI after (chemo)radiotherapy: correlation between radiologic and histopathologic findingsVincent Vandecaveye
Department of Radiology, University Hospitals Leuven, Leuven, Belgium
Int J Radiat Oncol Biol Phys 67:960-71. 2007..To investigate the value of diffusion weighted magnetic resonance imaging (DW-MRI) in differentiating persistent or recurrent head and neck squamous cell carcinoma (HNSCC) from nontumoral postradiotherapeutic alterations...
- Evaluation of true diffusion, perfusion factor, and apparent diffusion coefficient in non-necrotic liver metastases and uncomplicated liver hemangiomas using black-blood echo planar imagingKenneth Coenegrachts
Department of Radiology, AZ St Jan AV, Ruddershove 10, B 8000 Bruges, Belgium
Eur J Radiol 69:131-8. 2009..apparent diffusion coefficient at low b-values (ADC(low)) for differentiation between liver metastases and hemangiomas based on respiratory-triggered high-resolution Black-Blood Single-Shot SpinEcho Echo Planar Imaging (BB SS SE-EPI).
- Diffusion-weighted imaging (DWI) in MR mammography (MRM): clinical comparison of echo planar imaging (EPI) and half-Fourier single-shot turbo spin echo (HASTE) diffusion techniquesP A T Baltzer
Institute of Diagnostic and Interventional Radiology, Friedrich Schiller University Jena, Erlanger Allee 101, 07740, Jena, Germany
Eur Radiol 19:1612-20. 2009..This study investigated the use of echo planar imaging (EPI) and half-Fourier acquired single-shot turbo spin echo (HASTE)-DWI with respect to the three ..
- Zoomed functional imaging in the human brain at 7 Tesla with simultaneous high spatial and high temporal resolutionJosef Pfeuffer
Center for Magnetic Resonance Research, University of Minnesota Medical School, 2021 6th Street S E, Minneapolis, Minnesota 55455, USA
Neuroimage 17:272-86. 2002..The magnetization transfer effect induced by the outer-volume suppression pulses was investigated and found to be increased during neuronal activity...
- Role of diffusion-weighted echo-planar MR imaging in differentiation of residual or recurrent head and neck tumors and posttreatment changesA A K Abdel Razek
Department of Diagnostic Radiology, Faculty of Medicine, Mansoura University, Mansoura, Egypt
AJNR Am J Neuroradiol 28:1146-52. 2007..The purpose of this work was to evaluate whether diffusion-weighted MR imaging can be used in differentiating residual or recurrent head and neck tumors from postoperative or postradiation changes...
- Myocardial first pass perfusion: steady-state free precession versus spoiled gradient echo and segmented echo planar imagingYi Wang
Research and Education Department, St Francis Hospital, Roslyn, New York 11576, USA
Magn Reson Med 54:1123-9. 2005..Mean RMU was similar between SSFP and spoiled GRE, but there was a 58% increase in RMU with SSFP versus segmented EPI...
- Diffusion-weighted imaging of cerebral infarctions: are higher B values better?Jonathan H Burdette
Department of Radiology, Wake Forest Unversity School of Medicine, Winston Salem, North Carolina 27157, USA
J Comput Assist Tomogr 26:622-7. 2002..The purpose of this work is to determine whether high -value ( = 3,000 s/mm ) diffusion-weighted (DW) imaging is superior to low -value ( = 1,000 s/mm ) DW imaging for the detection of cerebral infarctions older than 6 h...
- Sensitivity-encoded (SENSE) echo planar fMRI at 3T in the medial temporal lobeConny F Schmidt
Institute for Biomedical Engineering, University of Zurich and ETH Zurich, Gloriastrasse 35, CH 8092 Zurich, Switzerland
Neuroimage 25:625-41. 2005..We present two fMRI studies comparing SENSE single-shot (ssh) echo planar imaging (EPI) at acceleration factors of 2.0, 2.4, 2.7, and 3.0 with conventional sshEPI at TE of 22 and 35 ms...
- An investigation of the value of spin-echo-based fMRI using a Stroop color-word matching task and EPI at 3 TDavid G Norris
Max Planck Institute for Cognitive Neuroscience, Stephanstrasse 1a, D 04103 Leipzig, Germany
Neuroimage 15:719-26. 2002....
- Effect of spatial smoothing on physiological noise in high-resolution fMRIChristina Triantafyllou
MGH MIT HMS A A Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Dept of Radiology, Mailcode 2301, Bldg 149, 13th Street, Charlestown, MA 02129, USA
Neuroimage 32:551-7. 2006....
- An evaluation of the use of magnetic field maps to undistort echo-planar imagesRhodri Cusack
MRC Cognition and Brain Sciences Unit, Cambridge, United Kingdom
Neuroimage 18:127-42. 2003..Overall, undistorting EPIs using field maps has proved extremely successful, improving the anatomical localization of activation and increasing statistical power...
- Interleaved silent steady state (ISSS) imaging: a new sparse imaging method applied to auditory fMRIChristian Schwarzbauer
MRC Cognition and Brain Sciences Unit, Cambridge, UK
Neuroimage 29:774-82. 2006The acoustic scanner noise that is generated by rapid gradient switching in echo planar imaging (EPI) is an important confounding factor in auditory fMRI...
- Enhancing BOLD response in the auditory system by neurophysiologically tuned fMRI sequenceErich Seifritz
University Hospital of Clinical Psychiatry, University of Bern, 3000 Bern, Switzerland
Neuroimage 29:1013-22. 2006..Finally, tonotopic mapping using continuous-sound fMRI demonstrates that enhanced functional signal-to-noise in BOLD response translates into improved spatial separability of specific sound representations...
- Point spread function mapping with parallel imaging techniques and high acceleration factors: fast, robust, and flexible method for echo-planar imaging distortion correctionM Zaitsev
Department of Radiologic Research, Medical Physics, University Hospital of Freiburg, Germany
Magn Reson Med 52:1156-66. 2004..The reliable performance of the PSF mapping technique is demonstrated on phantom and volunteer scans at field strengths of up to 4 T...
- Common SENSE (sensitivity encoding using hardware common to all MR scanners): a new method for single-shot segmented echo planar imagingDavid W Carmichael
University College London, Department of Medical Physics and Bioengineering, London, United Kingdom
Magn Reson Med 54:402-10. 2005..The most promising application for this technique is in improving the performance of echo planar imaging (EPI) at high field...
- Positive or negative blips? The effect of phase encoding scheme on susceptibility-induced signal losses in EPIClaudia De Panfilis
Wolfson Brain Imaging Centre, University of Cambridge, Addenbrooke s Hospital, BOX 65 Cambridge, CB2 2QQ, UK
Neuroimage 25:112-21. 2005..Our results suggest that this optimization method would be useful in future fMRI studies to improve the sensitivity in regions compromised by susceptibility effects...
- Echo time dependence of BOLD contrast and susceptibility artifactsMaria Luisa Gorno-Tempini
Wellcome Department of Cognitive Neurology, Institute of Neurology, 12 Queen Square, London WC1N 3BG, United Kingdom
Neuroimage 15:136-42. 2002..However, although the amount of signal loss is reduced at the lower TE, this does not appear to be sufficient to recover the BOLD signal in regions affected by susceptibility artifacts (i.e., anterior temporal lobes)...
- Correlation of the apparent diffusion coefficient and the creatine level in early ischemic stroke: a comparison of different patterns by magnetic resonanceH Rumpel
Department of Diagnostic Radiology, Singapore General Hospital, Singapore
J Magn Reson Imaging 13:335-43. 2001..Greatly lowered ADC values occur within the context of a stable cellularity. ADC and the Cre level have complementary roles in the characterization of stroke lesion with regard to the sequential stage...
- Compensation of susceptibility-induced signal loss in echo-planar imaging for functional applicationsD Cordes
Department of Medical Physics, The University of Wisconsin, 600 Highland Avenue, Madison, WI 53792, USA
Magn Reson Imaging 18:1055-68. 2000..The effectiveness of this method is demonstrated by recovering signal voids in the orbitofrontal cortex, parahippocampal/amygdala region, and inferior visual association cortex near the cerebellum...
- Event-related functional magnetic resonance imaging: modelling, inference and optimizationO Josephs
Wellcome Department of Cognitive Neurology, Institute of Neurology, London, UK
Philos Trans R Soc Lond B Biol Sci 354:1215-28. 1999..Finally, we illustrate various event-related models with examples from recent studies...
- Diffusion-weighted single shot echo planar imaging of colorectal cancer using a sensitivity-encoding techniqueKatsuhiro Nasu
National Cancer Center Hospital East, Department of Radiology, 6 5 1 Kashiwanoha, Kashiwa, Chiba 277 8577, Japan
Jpn J Clin Oncol 34:620-6. 2004We wanted to determine the feasibility of diffusion-weighted single shot echo planar imaging using a sensitivity-encoding technique (SENSE-DWI) in depicting colorectal cancer.
- Improved diffusion-weighted single-shot echo-planar imaging (EPI) in stroke using sensitivity encoding (SENSE)R Bammer
Magnetic Resonance Institute, Karl Franzens University, Graz, Austria
Magn Reson Med 46:548-54. 2001..Because of the faster k-space traversal, this novel technique is able to reduce typical EPI artifacts and increase spatial resolution while simultaneously remaining insensitive to bulk motion...
- Diffusion-weighted imaging of human carotid artery using 2D single-shot interleaved multislice inner volume diffusion-weighted echo planar imaging (2D ss-IMIV-DWEPI) at 3T: diffusion measurement in atherosclerotic plaqueSeong Eun Kim
Department of Radiology, Utah Center for Advanced Imaging Research, Salt Lake City, Utah 84108, USA
J Magn Reson Imaging 30:1068-77. 2009To determine if 2D single-shot interleaved multislice inner volume diffusion-weighted echo planar imaging (ss-IMIV-DWEPI) can be used to obtain quantitative diffusion measurements that can assist in the identification of plaque ..
- Functional MRI of the human amygdala?K D Merboldt
Biomedizinische NMR Forschungs GmbH am Max Planck Institut für biophysikalische Chemie, Gottingen, 37070, Germany
Neuroimage 14:253-7. 2001..Although high-resolution BOLD MRI is at the expense of temporal resolution and volume coverage, it seems to provide the only solution to this physical problem...
- Respiration-induced B0 fluctuations and their spatial distribution in the human brain at 7 TeslaPierre Francois van de Moortele
Center for Magnetic Resonance Research, Department of Radiology, University of Minnesota Medical School, Minneapolis 55455, USA
Magn Reson Med 47:888-95. 2002..Consequential apparent motions in the EPI series, as well as the implications of slice orientation for correction strategies are discussed...
- Reduction of magnetic field inhomogeneity artifacts in echo planar imaging with SENSE and GESEPI at high fieldQing X Yang
Department of Radiology, Center for NMR Research, Pennsylvania State University College of Medicine, Milton S Hershey Medical Center, Hershey 17033, USA
Magn Reson Med 52:1418-23. 2004Geometric distortion, signal-loss, and image-blurring artifacts in echo planar imaging (EPI) are caused by frequency shifts and T(2)(*) relaxation distortion of the MR signal along the k-space trajectory due to magnetic field ..
- Composite image formation in z-shimmed functional MR imagingR T Constable
Dept of Diagnostic Radiology, Yale University School of Medicine, New Haven, CT 06520 8042, USA
Magn Reson Med 42:110-7. 1999..Time efficiency is shown to be dependent on field uniformity. Theory, computer simulations, and results from fMRI studies are used to demonstrate the performance of these methods...
- On the synchronization of transcranial magnetic stimulation and functional echo-planar imagingSven Bestmann
Biomedizinische NMR Forschungs GmbH, Max Planck Institut fur biophysikalische Chemie, Gottingen, Germany
J Magn Reson Imaging 17:309-16. 2003..To minimize artifacts in echo-planar imaging (EPI) of human brain function introduced by simultaneous transcranial magnetic stimulation (TMS)...
- Functional MRI of the rodent somatosensory pathway using multislice echo planar imagingShella D Keilholz
Laboratory of Functional and Molecular Imaging, National Institutes of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland 20892, USA
Magn Reson Med 52:89-99. 2004..Optimal activation occurred in all areas at 3 Hz. These results demonstrate that whole-brain fMRI can be performed on rodents at 11.7 T to probe a well-defined neural network...
- Malignant hepatic tumor detection with ferumoxides-enhanced MR imaging with a 1.5-T system: comparison of four imaging pulse sequencesM Kanematsu
Department of Radiology, Gifu University School of Medicine, Gifu 500 8705, Japan
J Magn Reson Imaging 13:249-57. 2001....
- Glial tumor grading and outcome prediction using dynamic spin-echo MR susceptibility mapping compared with conventional contrast-enhanced MR: confounding effect of elevated rCBV of oligodendrogliomas [corrected]Michael H Lev
Departments of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
AJNR Am J Neuroradiol 25:214-21. 2004..We compared the specificity of SE rCBV mapping with that of conventional, contrast material-enhanced MR imaging in differentiating high- from low-grade glial tumors and in predicting survival of patients with these lesions...
- Combination of BOLD-fMRI and VEP recordings for spin-echo MRI detection of primary magnetic effects caused by neuronal currentsMarta Bianciardi
Laboratory of Neuroimaging, Foundation Santa Lucia I R C C S, 00179, Rome, Italy
Magn Reson Imaging 22:1429-40. 2004..Finally, results from a pilot study using the proposed combination of VEP recordings and MRI techniques are reported, suggesting the feasibility of this method...
- Fast spectroscopic imaging strategies for potential applications in fMRIRobert V Mulkern
Department of Radiology, Children s Hospital, Harvard Medical School, Boston, MA 02115, USA
Magn Reson Imaging 22:1395-405. 2004..Fast spectroscopic methods directed towards the 31P signals from phosphocreatine (PCr) and adenosine tri-phosphates (ATP) are also technically feasible and may prove useful for studying cerebral energetics within fMRI contexts...
- Correction for direction-dependent distortions in diffusion tensor imaging using matched magnetic field mapsBin Chen
Brain Imaging and Analysis Center, Box 3918, DUMC, Duke University, Durham, NC 27710, USA
Neuroimage 30:121-9. 2006....
- Effects of oxygen saturation on BOLD and arterial spin labelling perfusion fMRI signals studied in a motor activation taskPasi I Tuunanen
Faculty of Life Sciences, The University of Manchester, Manchester, UK
Neuroimage 30:102-9. 2006..These observations indicate that haemodynamic and metabolic responses may be heterogeneous in brain during execution of motor functions in mild hypoxia...
- Initial attempts at directly detecting alpha wave activity in the brain using MRIDaniel Konn
Sir Peter Mansfield Magnetic Resonance Centre, School of Physics and Astronomy, University of Nottingham, NG7 2RD, UK
Magn Reson Imaging 22:1413-27. 2004..Using these criteria the data obtained were consistent with direct detection of alpha wave activity in three of the four volunteers. No significant MR signal fluctuations due to evoked activity were identified...
- Anatomical and functional MR imaging in the macaque monkey using a vertical large-bore 7 Tesla setupJosef Pfeuffer
Department Physiology of Cognitive Processes, Max Planck Institute for Biological Cybernetics, 72012 Tübingen, Germany
Magn Reson Imaging 22:1343-59. 2004..The exquisite sensitivity of the system and the increased specificity of the hemodynamic signals promise further insights into the relationship of the latter to the underlying physiological activity...
- Single TrAjectory Radial (STAR) imagingGordon E Sarty
Department of Psychology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
Magn Reson Med 51:445-51. 2004..It is shown that such oversampling potentially reduces the image degrading effect of magnetic field inhomogeneities so that the motion robust features of radial imaging may be realized in a segmented EPI approach...
- Periodically rotated overlapping parallel lines with enhanced reconstruction-based diffusion tensor imaging. Comparison with echo planar imaging-based diffusion tensor imagingOsamu Abe
Department of Radiology, Graduate School of Medicine, University of Tokyo, 7 3 1 Hongo, Bunkyo ku, Tokyo 113 8655, Japan
J Comput Assist Tomogr 28:654-60. 2004To evaluate diffusion tensor imaging (DTI) based on periodically rotated overlapping parallel lines with enhanced reconstruction (PROPELLER) compared with DTI based on single-shot echo planar imaging (EPI).
- Variation of BOLD hemodynamic responses across subjects and brain regions and their effects on statistical analysesDaniel A Handwerker
Henry H Wheeler Jr Brain Imaging Center, Helen Wills Neuroscience Institute and Department of Psychology, University of California, Berkeley, CA 94720, USA
Neuroimage 21:1639-51. 2004..These results highlight the benefits of determining the best possible HRF estimate and potential negative consequences of assuming HRF consistency across subjects or brain regions...
- Neonatal brain: regional variability of in vivo MR imaging relaxation rates at 3.0 T--initial experienceLori Anne Williams
Imaging Division, Lawson Health Research Institute, London, Ontario, Canada
Radiology 235:595-603. 2005..0 T in neonatal brain, the relationship between these rates, and their potential use for gray matter (GM) versus white matter (WM) tissue discrimination...
- Importance of T2*-weighted gradient-echo MRI for diagnosis of cortical vein thrombosisFranz A Fellner
Institut fur Radiologie, Landes Nervenklinik Wagner Jauregg, Linz, Austria
Eur J Radiol 56:235-9. 2005..administration of contrast medium, T2*-weighted conventional gradient-echo (GRE), T2*-weighted spin-echo echo planar imaging (SE EPI), both without and with diffusion weighting as well as two-dimensional (2D) venous time-of-flight (..
- Spiral imaging: a critical appraisalKai Tobias Block
Biomedizinische NMR Forschungs GmbH am Max Planck Institut für biophysikalische Chemie, Gottingen, Germany
J Magn Reson Imaging 21:657-68. 2005..Taken together, while spiral imaging may find its niche applications, most high-speed imaging needs are more easily served by EPI...
- Geometric distortion correction of high-resolution 3 T diffusion tensor brain imagesSiamak Ardekani
Biomedical Engineering IDP, UCLA, Los Angeles, California 90095 1721, USA
Magn Reson Med 54:1163-71. 2005..In conclusion, the warping algorithm is effective in reducing geometric distortions, enabling generation of anatomically correct diffusion tensor images at 3 T...
- Spatial sensitivity and temporal response of spin echo and gradient echo bold contrast at 3 T using peak hemodynamic activation timeJustin Hulvershorn
Department of Biochemistry and Biophysics, University of Pennsylvania, Philadelphia, PA 19104, USA
Neuroimage 24:216-23. 2005..Spatial overlay of SE and GE PHAT maps onto structural images reveal markedly different spatial profiles and further support the interpretation that shorter peak times correlate to improved spatial sensitivity...
- A method of generalized projections (MGP) ghost correction algorithm for interleaved EPIK J Lee
Academic Unit of Radiology, University of Sheffield, Royal Hallamshire Hospital, Sheffield S10 2JF, UK
IEEE Trans Med Imaging 23:839-48. 2004..In simulations with phase variation between consecutive shots for n-interleaved echo planar imaging (EPI), ghost reduction was achieved for n = 2 only...
- PROPELLER EPI: an MRI technique suitable for diffusion tensor imaging at high field strength with reduced geometric distortionsFu Nien Wang
Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan, R O C
Magn Reson Med 54:1232-40. 2005..A higher signal-to-noise ratio (SNR) compared to single-shot EPI at an identical total scan time was achieved, which is advantageous for routine DTI applications in clinical practice...
- 3D DT-MRI using a reduced-FOV approach and saturation pulsesJiun Jie Wang
School of Medical Technology, ChangGung University, Taoyuan County, Taiwan
Magn Reson Med 51:853-7. 2004..This method enables DT measurements to be obtained with high isotropic spatial resolution and whole-brain coverage. To avoid ghosting artifacts, the data are combined in image space rather than in k-space...
- Online motion correction for diffusion-weighted segmented-EPI and FLASH imagingK S Weih
Max Planck Institute of Cognitive, NeuroscienceStephanstr 1a, D 04103, Leipzig, Germany
MAGMA 16:277-83. 2004..High quality images were obtained for both methods examined. Online motion correction brings direct benefits to both the diffusion-weighted segmented-EPI and FLASH techniques...
- Diffusion-weighted imaging of prostate cancerRyota Shimofusa
Department of Radiology, Chiba University Hospital, Chiba, Japan
J Comput Assist Tomogr 29:149-53. 2005..The purpose of this study was to assess whether T2-weighted (T2W) imaging with diffusion-weighted (DW) imaging could improve prostate cancer detection as compared with T2W imaging alone...
- Reference-scan-free method for automated correction of Nyquist ghost artifacts in echoplanar brain imagesYan Zhang
Laboratory for Structural NMR Imaging, Department of Radiology, University of Pennsylvania Medical Center, Philadelphia, Pennsylvania 19104, USA
Magn Reson Med 51:621-4. 2004..In vivo data demonstrate the effectiveness of the algorithm showing ghost suppression comparable to that achievable with the reference-scan method...
- Estimation of general linear model coefficients for real-time applicationE Bagarinao
Life Electronics Research Laboratory, National Institute of Advanced Industrial Science and Technology, Osaka, Japan
Neuroimage 19:422-9. 2003..Results of the analysis of an fMRI study using this approach showed the algorithm's potential for real-time application...
- Correction of physiologically induced global off-resonance effects in dynamic echo-planar and spiral functional imagingJosef Pfeuffer
Center for Magnetic Resonance Research, Department of Radiology, University of Minnesota Medical School, Minneapolis, Minnesota, USA
Magn Reson Med 47:344-53. 2002..The correction is simple to apply and can correct for other sources of frequency drift and fluctuations in dynamic imaging...
- Partial k-space reconstruction in single-shot diffusion-weighted echo-planar imagingPippa Storey
Radiology Department, Evanston Northwestern Healthcare, Evanston, Illinois 60201, USA
Magn Reson Med 57:614-9. 2007..The adaptive algorithm produces artifact-free images when the echo is shifted into the high positive k-space range, and reduces to the standard homodyne algorithm in the absence of bulk motion...
- Parallel magnetic resonance imagingDavid J Larkman
The Imaging Sciences Department, Clinical Sciences Centre, Faculty of Medicine, Imperial College London, Hammersmith Hospital Campus, Du Cane Road, London W12 0NN, UK
Phys Med Biol 52:R15-55. 2007..Well-established applications including angiography, cardiac imaging and applications using echo planar imaging are reviewed and we discuss what makes a good application for parallel imaging...
- Phantom-based evaluation of geometric distortions in functional magnetic resonance and diffusion tensor imagingSeppo Mattila
Brain Research Unit, Low Temperature Laboratory, TKK, Helsinki University of Technology, FI 02015 TKK, Espoo, Finland
Magn Reson Med 57:754-63. 2007..Possible future applications for this type of phantom include quality assurance and calibration of the hardware and software used in EPI-based functional MRI and DTI...
- The effect of varying echo spacing within a multiecho acquisition: better characterization of long T2 componentsMatthew G Skinner
Department of Medical Physics, Toronto Sunnybrook Regional Cancer Center, Toronto, ON, Canada M4H 1L7
Magn Reson Imaging 25:840-7. 2007..On the basis of these results, we recommend the use of extended DeltaTE2 values for imaging patients with lesions, without the risk of losing valuable short T2 information...
- Clinical multishot DW-EPI through parallel imaging with considerations of susceptibility, motion, and noiseStefan Skare
Lucas MRS I Center, Department of Radiology, Stanford University, California 94305, USA
Magn Reson Med 57:881-90. 2007..The image quality improvements without SNR efficiency loss, together with motion tolerance, make the GRAPPA-driven DW-EPI sequence clinically attractive...
- Contrast-enhanced MR imaging of the brain using T1-weighted FLAIR with BLADE compared with a conventional spin-echo sequenceShinji Naganawa
Department of Radiology, Nagoya University Graduate School of Medicine, 65 Tsurumai Cho, Shouwa ku, Nagoya, 466 8550, Japan
Eur Radiol 18:337-42. 2008..6% respectively, while on axial T1W-FLAIR BLADE they were 100% and 100%. T1W-FLAIR BLADE seems to be capable of replacing T1W-SE, at least for axial post-contrast imaging to detect brain metastases...
- Quantitative MR evaluation of intracranial epidermoid tumors by fast fluid-attenuated inversion recovery imaging and echo-planar diffusion-weighted imagingS Chen
Department of Neurosurgery, Hiroshima University School of Medicine, Hiroshima, Japan
AJNR Am J Neuroradiol 22:1089-96. 2001..Echo-planar DW imaging provides the best lesion conspicuity among the five MR methods. The hyperintensity of epidermoid tumors on echo-planar DW imaging is not caused by the diffusion restriction but by the T2 shine-through effect...
- White-marker imaging--separating magnetic susceptibility effects from partial volume effectsJan Henry Seppenwoolde
Image Sciences Institute, University Medical Center Utrecht, Department of Radiology, The Netherlands
Magn Reson Med 58:605-9. 2007..The results show that PV effects were eliminated in the in vitro experiments and were virtually absent under in vivo conditions...
- T2 relaxation measurements in X-linked adrenoleukodystrophy performed using dual-echo fast fluid-attenuated inversion recovery MR imagingE R Melhem
Department of Radiology and Radiological Sciences, The Johns Hopkins Medical Institutions, Baltimore, MD 21287, USA
AJNR Am J Neuroradiol 22:773-6. 2001..On the basis of dual-echo fast fluid-attenuated inversion recovery images and T2 maps, the affected white matter could be divided into two distinct zones in four patients with cerebral X-linked adrenoleukodystrophy...
- Optimized distortion correction technique for echo planar imagingN K Chen
Center for MR Research, ENH Research Institute, Northwestern University, Evanston, Illinois 60201, USA
Magn Reson Med 45:525-8. 2001..The effectiveness of this technique is illustrated with EPI studies on phantoms and animal subjects. Implementation to different versions of EPI sequences is also described. Magn Reson Med 45:525-528, 2001...
- Statistical framework and noise sensitivity of the amplitude radial correlation contrast methodZeev Gideon Kipervaser
MRI MRS Laboratory, Human Biology Research Center, Department of Medical Biophysics, Hadassah Hebrew University Medical Center, Jerusalem, Israel
Magn Reson Med 58:554-61. 2007....
- Regularized, fast, and robust analytical Q-ball imagingMaxime Descoteaux
Odyssee Project Team, INRIA ENPC ENS, INRIA Sophia Antipolis, France
Magn Reson Med 58:497-510. 2007..We show that our technique is also able to recover known fiber crossings in the human brain and provides the practical advantage of being up to 15 times faster than original numerical QBI method...
- High resolution single-shot EPI at 7TOliver Speck
Department of Biomedical Magnetic Resonance, Faculty of Natural Sciences Institute for Experimental Physics, Otto von Guericke University Magdeburg, Leipziger Str 44, Haus 01, 39120 Magdeburg, Germany
MAGMA 21:73-86. 2008Single-shot echo planar imaging (EPI) acquisitions at 7T are challenging due to increased distortions, signal dropouts, RF-power requirements, and reduced T2*...
- Monitoring ankylosing spondylitis therapy by dynamic contrast-enhanced and diffusion-weighted magnetic resonance imagingNatasa Gaspersic
Department of Rheumatology, University Medical Centre, Ljubljana, Slovenia
Skeletal Radiol 37:123-31. 2008..The aim was to assess the role of quantitative MRI in the evaluation of AS treatment efficacy...
- Clinical implications of increased fractional anisotropy in meningitis associated with brain abscessKavindra Nath
Department of Radiodiagnosis, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India
J Comput Assist Tomogr 31:888-93. 2007..To look for the clinical implications of increased cortical fractional anisotropy (FA) in meningitis patients associated with brain abscess...
- A preliminary study of the effects of trigger timing on diffusion tensor imaging of the human spinal cordP Summers
Institute for Neuroradiology, University Hospital Zurich, Zurich, Switzerland
AJNR Am J Neuroradiol 27:1952-61. 2006..In this study, we examined the temporal dynamics of spinal cord motion and their impact on diffusion tensor image quality...
- 3D MRI in multiple sclerosis: a study of three sequences at 3 TR J Mills
Department of Neurology, The Walton Centre for Neurology and Neurosurgery, Liverpool, UK
Br J Radiol 80:307-20. 2007....
- Global and region-specific analyses of apparent diffusion coefficient in dentatorubral-pallidoluysian atrophyT Kin
Department of Neurology, Nara Medical University, 840 Shijo Cho, Kashihara, Nara 634 8522, Japan
AJNR Am J Neuroradiol 27:1463-6. 2006..We attempted to quantify global and region-specific neurodegeneration in DRPLA using analysis of apparent diffusion coefficient (ADC) maps...
- Sensitivity-encoded diffusion tensor MR imaging of the cervical cordMara Cercignani
Neuroimaging Research Unit, Department of Neuroscience, Scientific Institute and University Ospedale San Raffaele, Via Olgettina 60, 20132 Milan, Italy
AJNR Am J Neuroradiol 24:1254-6. 2003..Off-resonance artifacts were notably reduced compared with those of full-FOV EPI sequences. This approach to diffusion tensor MR imaging of the cervical cord is promising for future, more extensive clinical applications...
- A consistent relationship between local white matter architecture and functional specialisation in medial frontal cortexT E J Behrens
Oxford Centre for Functional Magnetic Resonance Imaging of the Brain, University of Oxford, John Radcliffe Hospital, Oxford OX3 9DU, UK
Neuroimage 30:220-7. 2006....
- MRI of the abnormal cervical spinal cord using 2D spoiled gradient echo multiecho sequence (MEDIC) with magnetization transfer saturation pulse. A T2* weighted feasibility studyP Held
Department of Diagnostic Radiology, University of Regensburg, 93042 Regensburg, Germany
J Neuroradiol 30:83-90. 2003....
- Unbiased segmentation of diffusion-weighted magnetic resonance images of the brain using iterative clusteringAndreas Hadjiprocopis
NMR Research Unit, Department of Neuroinflammation, Institute of Neurology, University College London, Queen Square, WC1N 3BG London, UK
Magn Reson Imaging 23:877-85. 2005..The unbiased method proposed may provide a more accurate methodology of segmentation in the analysis of DWI-EPI images in conditions such as MS...
- MR imaging enhancement patterns as predictors of hemorrhagic transformation in acute ischemic strokeKatie D Vo
Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, MO 63110, USA
AJNR Am J Neuroradiol 24:674-9. 2003..We sought to investigate gadolinium enhancement in acute ischemic stroke patients to determine their association with subsequent HT...
- Pyramidal tract mapping by diffusion tensor magnetic resonance imaging in multiple sclerosis: improving correlations with disabilityM Wilson
Division of Clinical Neurology, Queens Medical Centre, Nottingham University, Nottingham, UK
J Neurol Neurosurg Psychiatry 74:203-7. 2003..Diffusion tensor imaging (DTI) of the brain can provide unique information regarding the orientation and integrity of white matter tracts in vivo...
- Dependence of amygdala activation on echo time: results from olfactory fMRI experimentsTony Stöcker
Institut fur Medizin, Forschungszentrum Julich, 52425 Julich, Germany
Neuroimage 30:151-9. 2006..The results are in good agreement with theoretical descriptions of the BOLD sensitivity under the influence of susceptibility gradients...
- Multiparametric MRI ISODATA ischemic lesion analysis: correlation with the clinical neurological deficit and single-parameter MRI techniquesPanayiotis D Mitsias
Department of Neurology, Henry Ford Health Sciences Center, Detroit, Michigan, USA
Stroke 33:2839-44. 2002....
- Variable precision registration via wavelets: optimal spatial scales for inter-subject registration of functional MRIJ Suckling
Brain Mapping Unit, Department of Psychiatry, University of Cambridge, Addenbrooke s Hospital, Cambridge CB2 2QQ, UK
Neuroimage 31:197-208. 2006..We conclude that major benefits in sensitivity to detect functional activation in multi-subject fMRI studies can be attained with an inhomogeneous deformation applied over appropriate spatial scales...
- Fiber tracking in the cervical spine and inferior brain regions with reversed gradient diffusion tensor imagingHenning U Voss
Citigroup Biomedical Imaging Center, Weill Medical College of Cornell University, New York, NY 10021, USA
Magn Reson Imaging 24:231-9. 2006..Furthermore, uninterrupted white matter fiber tracts going from the cervical spine up to cortical areas, derived from data acquired in a single acquisition, are presented...
- fMRI Technique Development for Substance Abuse ResearchBlaise Frederick; Fiscal Year: 2005..The long term goals of this research are to provide a better understanding of the phenomenon of cocaine abuse so that better prevention and treatment strategies can be developed and evaluated. ..
- Artifact-Free Diffusion Mapping with Echo-Planar ImagingNan kuei Chen; Fiscal Year: 2005..A successful outcome from this study will generate a robust and rigorously validated diffusion mapping protocol free from EPI artifacts. ..
- Free-Breathing Perfusion MRI of the Abdomen with Predictive Motion CorrectionH Michael Gach; Fiscal Year: 2013..using computer simulations and in vivo respiratory motion data;2) integrate the best RMP algorithms with 2D echo planar imaging (EPI) and 3D gradient and spin echo (GRASE) MRI to allow fast free-breathing MRI acquisitions of the ..
- High resolution 3D diffusion-weighted breast MRIBruce L Daniel; Fiscal Year: 2012..Eliminating gadolinium contrast material will reduce the duration, cost, risk and invasiveness of breast MRI, enabling MRI to be used more widely to screen for occult, early-stage, treatable breast cancer. ..
- Development of Sub-second 3D Pulse Sequences for FMRI in NeurosciencesDAVID ALAN FEINBERG; Fiscal Year: 2010..b>Echo planar imaging (EPI) is the most widely used fMRI pulse sequence, due to its speed and BOLD contrast, however EPI has ..
- MULTIPLEXED ECHO PLANAR IMAGING FOR NEUROSCIENCESDAVID ALAN FEINBERG; Fiscal Year: 2013..b>Echo planar imaging (EPI) is the most widely used MRI technique used for neurosciences due to its extremely fast imaging speed ..
- Effect of HIV infection and antiretroviral therapy on cerebral autoregulationSouvik Sen; Fiscal Year: 2013..Through the use of the unique resources and personnel at University of North Carolina, we have the opportunity to provide answers to important clinical and mechanistic questions in HIV and the risk for stroke. ..
- Combined shim-RF for improved high field MRILawrence L Wald; Fiscal Year: 2013..The problem is particularly acute for fast sequences such as the echo planar imaging (EPI) needed for functional, perfusion and diffusion imaging...
- Adaptive Techniques for Robust High-Resolution Functional Magnetic Resonance ImagDANIEL STUART WELLER; Fiscal Year: 2013..Altogether, we aim to provide novel acquisition and reconstruction techniques that are more robust to motion and observation noise and have greater resolution than conventional fMRI. ..
- TISSUE VIABILITY IN STROKE BY SODIUM MR IMAGINGKeith Thulborn; Fiscal Year: 2003..abstract_text> ..
- TISSUE VIABILITY IN STROKE BY SODIUM MR IMAGINGKeith Thulborn; Fiscal Year: 2002..abstract_text> ..
- Development of a Brain Template for Diffusion-Tensor MRIKonstantinos Arfanakis; Fiscal Year: 2009....
- DIFFUSION/PERFUSION MRI OF ISCHEMIC PENUMBRARobert Edelman; Fiscal Year: 1999..These innovations include echo planar imaging (EPI), a class of MRI pulse sequences that permits imaging on the order on 100 ms, diffusion weighted ..
- SUPERHEATED DROP DETECTORS FOR DOSIMETRY IN RADIOTHERAPYRavinder Nath; Fiscal Year: 2005..microdroplets An automated technique for rapid pressure cycling and high-speed image acquisition using 3D-echo planar imaging and optical tomography will be used to improve statistical accuracy and spatial resolution...
- MR Diffusion Tensor Imaging of Prostate CancerDaniel B Vigneron; Fiscal Year: 2010..abstract_text> ..
- PERFUSION MR IMAGING OF RENAL ALLOGRAFT REJECTIONSARDHA TALAGALA; Fiscal Year: 1999..Perfusion characteristics of renal allografts measured perfusion MRI offer potential clinical application to diagnosis of AR. ..
- Diagnostic Imaging of Cerebral Blood Flow with MRIDavid Alsop; Fiscal Year: 2003..These developments will make reliable CBF imaging by Arterial Spin Labeling a widely applicable technique for diagnostic imaging. ..
- Systematic Artifact Reduction in Auditory fMRIThomas Talavage; Fiscal Year: 2009..These benefits will provide greater confidence in location and extent of detected activity, significantly impacting human brain mapping, but also directly benefiting efforts at pre-surgical mapping. ..
- Improved Multimodal Acquisition and Processing SystemDONALD DUROUSSEAU; Fiscal Year: 2004..abstract_text> ..
- BIOMEDICAL IMPLICATIONS OF MAGNETIC SUSCEPTIBILITYThomas Brady; Fiscal Year: 2001..The availability of real time echo planar imaging as a tool for the study of these questions continues to offer both new opportunities and scientific ..
- Improved imaging of brain white matterAdam Anderson; Fiscal Year: 2007..2) To develop high spatial resolution DTI using navigated, multiple shot echo planar imaging. (3) To develop a time-efficient approach to DTI that uses a multiple-tensor model of diffusion in each ..
- ROBUST CONTRAST FOR AUTO--ANALYSIS OF CARDIAC MRIJohn Oshinski; Fiscal Year: 2000..to control the effect of normal breathing during examination and, to provide greater coverage in less time, echo planar imaging. They proposed to compare diagnoses made from conventional and improved images and to compare automated ..
- 32-Channel Parallel Imaging 3Tesla MRIAlayar Kangarlu; Fiscal Year: 2009..SPGR and echo planar imaging (EPI) will specially benefit from ability to achieve much shorter echo times (TE) and further enhance SNR ..
- DYNAMIC 3D TAGGED MRI OF THE CARDIAC CYCLE IN ISCHEMIAElias Zerhouni; Fiscal Year: 1999..We will also continue our clinical exploration of acute reperfused infarction in man with similar methods. ..
- Console upgrade for 4.7T Imaging and Spectroscopy SystemMartin Kushmerick; Fiscal Year: 2002..Rapid scout imaging for checks on surface coil placement and state-of-the-art echo planar imaging to map the dynamics of muscle length changes during contraction are not possible now...
- 94T NMR SYSTEMJ Vaughan; Fiscal Year: 1999..Overall, this primate dedicated NMR system will provide state-of-the-art performance and capability for imaging of laboratory animals at the NERPRC. ..
- MRI OF HUMAN CORONARY ARTERIESLeon Kaufman; Fiscal Year: 1991..Characterization of echo planar imaging of the human coronary arteries...
- ELECTROMAGNETIC REAL-TIME TRACKING DURING MRI SCANNINGErez Nevo; Fiscal Year: 1999..abstract_text> ..
- PARALLEL SUPERSCALAR PROCESSING SYSTEM FOR NMR RESEARCHJustin Pearlman; Fiscal Year: 1991....
- A QUIET, HIGH-PERFORMANCE, HIGH-FIELD MRI GRADIENT COILF Doty; Fiscal Year: 2004..The gradient coil will be switchable between a configuration optimized for functional MRI (fMRI) using Echo Planar Imaging (EPI) and one optimized for high-gradient techniques such as high-resolution diffusion-weighted microscopy ..
- A QUIET, HIGH-PERFORMANCE, HIGH-FIELD MRI GRADIENT COILF Doty; Fiscal Year: 2001..The gradient coil will be switchable between a configuration optimized for functional MRI (fMRI) using Echo Planar Imaging (EPI) and one optimized for high-gradient techniques such as high-resolution diffusion-weighted microscopy ..
- High-Throughput RF Coils for High-Field MRIF Doty; Fiscal Year: 2001..The design will be compatible with EPI (Echo Planar Imaging) and will be suitable for use from 1 to 5 T...
- FUNCTIONAL MRI FOR NEUROSURGICAL PLANNING IN EPILEPSYR Constable; Fiscal Year: 2006..It is noninvasive and has been shown to be able to localize cortical activity. However, the standard echo planar imaging fMR1 methods, based on the BOLD activation response, suffer from low spatial resolution, and sensitivity to ..
- Combined RT-shim & gradient system B-GA 12SHelene Benveniste; Fiscal Year: 2009....
- High Fidelity fMRIAllen Song; Fiscal Year: 2007..abstract_text> ..
- K-Space energy spectrum analysis for echo-planar imagingNan kuei Chen; Fiscal Year: 2007..unreadable] [unreadable] [unreadable]..
- A Longitudinal 3-D MRSI Study of Infants at High Risk for AutismStephen R Dager; Fiscal Year: 2010....
- BRAIN METABOLISM AND TREATMENT OUTCOME IN PANIC DISORDERStephen Dager; Fiscal Year: 2004..abstract_text> ..
- A Diffusion-Based MRI Method to Detect Glioma InvasionKATHLEEN SCHMAINDA; Fiscal Year: 2008..This comprehensive approach to brain tumor imaging should dramatically improve the treatment and prognosis for patients with brain tumors. [unreadable] [unreadable] [unreadable]..
- Dynamic Magnetic Resonance Inverse Imaging of the Human BrainFa Hsuan Lin; Fiscal Year: 2008..unreadable] [unreadable] [unreadable]..
- Improved 3D MRI with cylindrical trajectoriesDavid Feinberg; Fiscal Year: 2004..During the commercialization phase the developed set of pulse sequences will be ported for suitable hardware and software platforms of all major MR hardware manufacturers. ..
- MRI PULSE SEQUENCE DESIGNS FOR SUB-SECOND BRAIN IMAGINGDavid Feinberg; Fiscal Year: 2001..The most widely used approach to sub-second MRI, echo planar imaging (EPI), suffers from severe limitations...
- Evaluation of New Imaging Methodologies at 7TEWART HAACKE; Fiscal Year: 2007..Many of the approaches developed and applied on this animal system are expected to have important clinical impact. All of these projects will substantially benefit from the proposed acquisition. [unreadable] [unreadable] [unreadable]..
- Real-Time Functional MRI with Automated Pattern ClassificationStefan Posse; Fiscal Year: 2008..The long-term goal of this project is to develop an automated fMRI analysis tool that will have significant commercial potential for clinical and research use. [unreadable] [unreadable] [unreadable]..
- Susceptibility Weighted Imaging (SWI)EWART MARK HAACKE; Fiscal Year: 2010..Recently, SWI has also become available to the clinical world for every day use and therefore its continued technical development is of paramount importance for the proper diagnosis of these diseases in patients. ..
- Real-time FMRI at High Field / Automatic ClassificationStefan Posse; Fiscal Year: 2005..abstract_text> ..
- Odors maps in olfactory bulb by fMRIDEWAN SYED HYDER; Fiscal Year: 2006..Activity of single glomeruli can help elucidate mechanisms of olfactory processing. ..
- Merit of MRI Perfusion Targets for Radiotherapy PlanningKATHLEEN SCHMAINDA; Fiscal Year: 2006..unreadable] [unreadable] [unreadable]..
- PHYSIOLOGIC UNDERSTANDING OF FUNCTIONAL MRIFahmeed Hyder; Fiscal Year: 2002....
- MR Guided Transendocardial Angiogenic AgentsMaythem Saeed; Fiscal Year: 2007..abstract_text> ..
- Ultrasound-Guided MRIDavid Feinberg; Fiscal Year: 2005..Ultrasound-guided MRI should permit dramatic improvements in imaging the heart or abdominal organs that are affected by physiological motion. ..
- Acoustic Interference on Attention in HIV PatientsDardo Tomasi; Fiscal Year: 2003..More generally, this study will also improve the understanding of the neural effects of acoustic noise interference during fMRI studies in healthy populations. ..
- Dynamic Measurement of Brain Metabolism in SchizophreniaDavid Guilfoyle; Fiscal Year: 2005..In addition, this technique will provide a new rapid method for evaluation of drug effects, and a potential method for detecting very early stages of the disease prior to the manifestation of a full-blown psychosis. ..
- Neural representations of social knowledgeJason Mitchell; Fiscal Year: 2005..Together, these experiments will improve current understanding of autism, a prevalent developmental disorder characterized by pervasive deficits in social cognitive processing, e.g., representing the mental states of other people. ..
- The Structural Dependence of CRAZED ImagingDANIEL GOCHBERG; Fiscal Year: 2005..We aim to clarify the factors that affect this dependence. ..
- CLINICAL NMR STUDIES AT 41T--A RESEARCH RESOURCEDONALD TWIEG; Fiscal Year: 2001..These goals are intended to advance the state of the art in high field imaging and spectroscopy from a research curiousity to a powerful and clinically viable investigation tool. ..
- MONTE CARLO SIMULATION OF HIGH ENERGY PHOTON IMAGINGYuni Dewaraja; Fiscal Year: 2001..Apart from quantification, this work will have applications in the design of future imaging systems for high energy photons. ..
- HE3 MR Diffusion & Low Dose CT Quantitation of EmphysemaDavid Gierada; Fiscal Year: 2005..In a third group of subjects, we will determine ADC and LD-QCT lung attenuation measurements at serial time points to assess for emphysema progression (Aim III). ..
- BROADBAND EPR SPECTROMETER WITH DIGITAL SUBSAMPLINGJames Hyde; Fiscal Year: 2002..It is the only method that can detect the formation of free radicals in biology unambiguously. It contributes to health-related research at the basic fundamental level. ..
- PREVENTION OF SUICIDE IN THE ELDERLYGeorge Alexopoulos; Fiscal Year: 2002..Data will also be collected to document the impact of intervention on patient care, and on physician knowledge, attitudes, and satisfaction and test hypotheses derived from preliminary studies of the three IRCs. ..
- Neurochemical Challenge in Human Stroke RecoveryRONALD LAZAR; Fiscal Year: 2008..abstract_text> ..
- MAGIC - Magnetic Resonance Assessment of Gene Imaging ConstructsRalph Mason; Fiscal Year: 2008..unreadable] [unreadable] [unreadable]..