Roland Bammer

Summary

Affiliation: Stanford University
Country: USA

Publications

  1. ncbi request reprint Analysis and generalized correction of the effect of spatial gradient field distortions in diffusion-weighted imaging
    R Bammer
    Lucas MRS I Center, Department of Radiology, Stanford University, Stanford, California 94305, USA
    Magn Reson Med 50:560-9. 2003
  2. ncbi request reprint Basic principles of diffusion-weighted imaging
    Roland Bammer
    Department of Radiology, Lucas MRS I Center, Stanford University, 1201 Welch Road, Stanford, CA 94305 5488, USA
    Eur J Radiol 45:169-84. 2003
  3. ncbi request reprint Diffusion-weighted imaging of the spinal cord: interleaved echo-planar imaging is superior to fast spin-echo
    Roland Bammer
    Lucas MRS I Center, Radiological Science Laboratory, Stanford University, Stanford, California 94305 5488, USA
    J Magn Reson Imaging 15:364-73. 2002
  4. ncbi request reprint Diffusion imaging in multiple sclerosis
    Roland Bammer
    Department of Radiology, Lucas MRS I Center, Stanford University, Stanford, California, USA
    Neuroimaging Clin N Am 12:71-106. 2002
  5. ncbi request reprint In vivo MR tractography using diffusion imaging
    Roland Bammer
    Lucas MRS I Center, Department of Radiology, Stanford University, 1201 Welch Road, Stanford, CA 94305 5488, USA
    Eur J Radiol 45:223-34. 2003
  6. pmc Combined spin- and gradient-echo perfusion-weighted imaging
    Heiko Schmiedeskamp
    Department of Radiology, Stanford University, Lucas Center, Stanford, California, USA
    Magn Reson Med 68:30-40. 2012
  7. pmc Geography, structure, and evolution of diffusion and perfusion lesions in Diffusion and perfusion imaging Evaluation For Understanding Stroke Evolution (DEFUSE)
    Jean Marc Olivot
    Department of Neurology, Neurological Sciences and the Stanford Stroke Center, Stanford University Medical Center, Stanford, CA, USA
    Stroke 40:3245-51. 2009
  8. pmc Refining the definition of the malignant profile: insights from the DEFUSE-EPITHET pooled data set
    Michael Mlynash
    Department of Neurology and Neurological Sciences, Stanford Stroke Center, 780 Welch Road, Suite 205, Stanford, Stanford, CA, USA
    Stroke 42:1270-5. 2011
  9. doi request reprint Prospective optical motion correction for 3D time-of-flight angiography
    DANIEL KOPEINIGG
    Department of Radiology, Stanford University, Stanford, California 94305 5488, USA
    Magn Reson Med 69:1623-33. 2013
  10. pmc Improving dynamic susceptibility contrast MRI measurement of quantitative cerebral blood flow using corrections for partial volume and nonlinear contrast relaxivity: A xenon computed tomographic comparative study
    Greg Zaharchuk
    Department of Radiology, Stanford University, Stanford, California, USA
    J Magn Reson Imaging 30:743-52. 2009

Detail Information

Publications110 found, 100 shown here

  1. ncbi request reprint Analysis and generalized correction of the effect of spatial gradient field distortions in diffusion-weighted imaging
    R Bammer
    Lucas MRS I Center, Department of Radiology, Stanford University, Stanford, California 94305, USA
    Magn Reson Med 50:560-9. 2003
    ..With the proposed correction scheme, most of the errors introduced by gradient nonuniformities can be removed...
  2. ncbi request reprint Basic principles of diffusion-weighted imaging
    Roland Bammer
    Department of Radiology, Lucas MRS I Center, Stanford University, 1201 Welch Road, Stanford, CA 94305 5488, USA
    Eur J Radiol 45:169-84. 2003
    ..More advanced diffusion measurement techniques, such as high angular resolution diffusion imaging, are also addressed...
  3. ncbi request reprint Diffusion-weighted imaging of the spinal cord: interleaved echo-planar imaging is superior to fast spin-echo
    Roland Bammer
    Lucas MRS I Center, Radiological Science Laboratory, Stanford University, Stanford, California 94305 5488, USA
    J Magn Reson Imaging 15:364-73. 2002
    ..To compare and evaluate two novel diffusion-weighted sequences, based either on fast spin-echo (FSE) or interleaved echo-planar imaging (EPI) methods, as potential tools for investing spinal cord abnormalities...
  4. ncbi request reprint Diffusion imaging in multiple sclerosis
    Roland Bammer
    Department of Radiology, Lucas MRS I Center, Stanford University, Stanford, California, USA
    Neuroimaging Clin N Am 12:71-106. 2002
  5. ncbi request reprint In vivo MR tractography using diffusion imaging
    Roland Bammer
    Lucas MRS I Center, Department of Radiology, Stanford University, 1201 Welch Road, Stanford, CA 94305 5488, USA
    Eur J Radiol 45:223-34. 2003
    ..Clinical applications and different strategies for evaluating the fidelity of tracking results are reviewed...
  6. pmc Combined spin- and gradient-echo perfusion-weighted imaging
    Heiko Schmiedeskamp
    Department of Radiology, Stanford University, Lucas Center, Stanford, California, USA
    Magn Reson Med 68:30-40. 2012
    ..Overall, SAGE EPI combined the advantages of higher sensitivity to contrast agent passage of gradient-echo perfusion-weighted imaging with better microvascular selectivity of spin-echo perfusion-weighted imaging...
  7. pmc Geography, structure, and evolution of diffusion and perfusion lesions in Diffusion and perfusion imaging Evaluation For Understanding Stroke Evolution (DEFUSE)
    Jean Marc Olivot
    Department of Neurology, Neurological Sciences and the Stanford Stroke Center, Stanford University Medical Center, Stanford, CA, USA
    Stroke 40:3245-51. 2009
    ..We investigated spatial relationships between final infarcts and early DWI/PWI lesions before and after intravenous thrombolysis in the Diffusion and perfusion imaging Evaluation For Understanding Stroke Evolution (DEFUSE) study...
  8. pmc Refining the definition of the malignant profile: insights from the DEFUSE-EPITHET pooled data set
    Michael Mlynash
    Department of Neurology and Neurological Sciences, Stanford Stroke Center, 780 Welch Road, Suite 205, Stanford, Stanford, CA, USA
    Stroke 42:1270-5. 2011
    ....
  9. doi request reprint Prospective optical motion correction for 3D time-of-flight angiography
    DANIEL KOPEINIGG
    Department of Radiology, Stanford University, Stanford, California 94305 5488, USA
    Magn Reson Med 69:1623-33. 2013
    ..In conclusion, the optical motion correction system tested in this study has the potential to greatly improve 3D time-of-flight angiograms regardless of whether it is used with or without SENSE...
  10. pmc Improving dynamic susceptibility contrast MRI measurement of quantitative cerebral blood flow using corrections for partial volume and nonlinear contrast relaxivity: A xenon computed tomographic comparative study
    Greg Zaharchuk
    Department of Radiology, Stanford University, Stanford, California, USA
    J Magn Reson Imaging 30:743-52. 2009
    ....
  11. pmc Clinical outcomes strongly associated with the degree of reperfusion achieved in target mismatch patients: pooled data from the Diffusion and Perfusion Imaging Evaluation for Understanding Stroke Evolution studies
    Manabu Inoue
    Stanford Stroke Center, Stanford University School of Medicine, Stanford, CA 94305, USA
    Stroke 44:1885-90. 2013
    ..We hypothesized that there would be a strong correlation between the degree of reperfusion achieved and clinical outcomes in target mismatch (TMM) patients...
  12. pmc Diffusion tensor imaging (DTI) with retrospective motion correction for large-scale pediatric imaging
    Samantha J Holdsworth
    Department of Radiology, Stanford University, Stanford, California, USA
    J Magn Reson Imaging 36:961-71. 2012
    ....
  13. pmc Real-time optical motion correction for diffusion tensor imaging
    Murat Aksoy
    Department of Radiology, Stanford University, Stanford, California 94305 5488, USA
    Magn Reson Med 66:366-78. 2011
    ..Statistical analysis revealed a significant improvement in similarity between diffusion data acquired at different time points when prospective correction was used compared to retrospective correction (P<0.001)...
  14. pmc Acute stroke imaging research roadmap
    Max Wintermark
    Department of Radiology, University of California, San Francisco, CA 94143 0628, USA
    AJNR Am J Neuroradiol 29:e23-30. 2008
    ..The present article summarizes these recommendations and examines practical steps to achieve them...
  15. pmc Clinical multishot DW-EPI through parallel imaging with considerations of susceptibility, motion, and noise
    Stefan 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...
  16. pmc Combined arterial spin label and dynamic susceptibility contrast measurement of cerebral blood flow
    Greg Zaharchuk
    Department of Radiology, Stanford University, Stanford, California 94305 5488, USA
    Magn Reson Med 63:1548-56. 2010
    ..These findings suggest that combining ASL and DSC perfusion measurements improves quantitative CBF measurements in patients with cerebrovascular disease...
  17. pmc Early diffusion-weighted imaging and perfusion-weighted imaging lesion volumes forecast final infarct size in DEFUSE 2
    Hayley M Wheeler
    Stanford Stroke Center, Stanford University School of Medicine, Stanford, CA 94305, USA
    Stroke 44:681-5. 2013
    ..With incomplete reperfusion, the union of baseline DWI and posttreatment PWI is hypothesized to predict infarct volume...
  18. pmc Hybrid prospective and retrospective head motion correction to mitigate cross-calibration errors
    Murat Aksoy
    Department of Radiology, Stanford University, Stanford, California 94305 5488, USA
    Magn Reson Med 67:1237-51. 2012
    ..Moreover, the motion tracking system, which is used to reduce the dimensionality of the autofocusing problem, benefits the retrospective approach at the same time...
  19. pmc Breathheld autocalibrated phase-contrast imaging
    Calvin Lew
    Department of Radiology, Stanford University, Stanford, California 94305, USA
    J Magn Reson Imaging 31:1004-14. 2010
    ..To compare generalized autocalibrating partially parallel acquisitions (GRAPPA), modified sensitivity encoding (mSENSE), and SENSE in phase-contrast magnetic resonance imaging (PC-MRI) applications...
  20. doi request reprint Arterial spin labeling imaging findings in transient ischemic attack patients: comparison with diffusion- and bolus perfusion-weighted imaging
    Greg Zaharchuk
    Department of Radiology, Stanford University, Stanford, CA 94305 5488, USA
    Cerebrovasc Dis 34:221-8. 2012
    ..Due to its high sensitivity to minor perfusion alterations, we hypothesized that ASL abnormalities would be identified frequently in TIA patients, and could therefore help increase clinicians' confidence in the diagnosis...
  21. pmc CBF measurements using multidelay pseudocontinuous and velocity-selective arterial spin labeling in patients with long arterial transit delays: comparison with xenon CT CBF
    Deqiang Qiu
    Department of Radiology, Stanford University, Stanford, California, USA
    J Magn Reson Imaging 36:110-9. 2012
    ..To test the theory that velocity-selective arterial spin labeling (VSASL) is insensitive to transit delay...
  22. pmc Single-step nonlinear diffusion tensor estimation in the presence of microscopic and macroscopic motion
    Murat Aksoy
    Lucas Center, Department of Radiology, Stanford University, 1201 Welch Road, Stanford, CA 94305, USA
    Magn Reson Med 59:1138-50. 2008
    ..Applications to both phantom simulations and in vivo studies showed that in the case of gross motion the proposed algorithm performs superiorly compared to conventional methods used for tensor estimation...
  23. pmc Risk factors of symptomatic intracerebral hemorrhage after tPA therapy for acute stroke
    Maarten G Lansberg
    Stanford University, Stanford Stroke Center, Palo Alto, California 94304, USA
    Stroke 38:2275-8. 2007
    ..MRI-based variables have generally not been included in predictive models, and little is known about the influence of reperfusion on SICH risk...
  24. pmc New methods in diffusion-weighted and diffusion tensor imaging
    Roland Bammer
    Department of Radiology, Stanford University, 1201 Welch Road, Lucas Center, PS08, Stanford, CA 94305 5488, USA
    Magn Reson Imaging Clin N Am 17:175-204. 2009
    ..This article aims to provide a succinct overview of some of these new developments and a description of some of the major challenges associated with DWI...
  25. pmc Robust GRAPPA-accelerated diffusion-weighted readout-segmented (RS)-EPI
    Samantha J Holdsworth
    Lucas MRS I Center, Department of Radiology, Stanford University, Stanford, California 94305 5488, USA
    Magn Reson Med 62:1629-40. 2009
    ..The robustness of RS-EPI toward phase errors and motion, together with its minimized distortions compared with EPI, enables the acquisition of exquisite 3 T DW images with matrix sizes close to 512(2)...
  26. pmc Improvements in parallel imaging accelerated functional MRI using multiecho echo-planar imaging
    Heiko Schmiedeskamp
    Lucas Center, Department of Radiology, Stanford University, Stanford, California, USA
    Magn Reson Med 63:959-69. 2010
    ..Thus, the presented method showed multiple advantages over conventional single-echo EPI for standard blood-oxygenation-level-dependent functional MRI experiments...
  27. pmc Patients with single distal MCA perfusion lesions have a high rate of good outcome with or without reperfusion
    Robin Lemmens
    Stanford University, Stanford, CA, USA
    Int J Stroke 9:156-9. 2014
    ..Reperfusion is associated with good functional outcome after stroke. However, minimal data are available regarding the effect of reperfusion on clinical outcome and infarct growth in patients with distal MCA branch occlusions...
  28. pmc Comparison of the response to endovascular reperfusion in relation to site of arterial occlusion
    Robin Lemmens
    Stanford Stroke Center, Stanford University of Medicine, Stanford, CA, USA
    Neurology 81:614-8. 2013
    ..We explored the relationship between the site of vascular occlusion and the response to endovascular treatment in patients with acute ischemic stroke and also considered the impact of mismatch profile...
  29. pmc Simultaneous perfusion and permeability measurements using combined spin- and gradient-echo MRI
    Heiko Schmiedeskamp
    Lucas Center, Department of Radiology, Stanford University, Stanford, California 94305 5488, USA
    J Cereb Blood Flow Metab 33:732-43. 2013
    ..Furthermore, extracted permeability parameters were in good agreement with elevated T1-weighted postcontrast signal values...
  30. pmc Patients with the malignant profile within 3 hours of symptom onset have very poor outcomes after intravenous tissue-type plasminogen activator therapy
    Manabu Inoue
    Stanford Stroke Center, Stanford University Medical Center, Stanford, CA, USA
    Stroke 43:2494-6. 2012
    ....
  31. pmc MRI profile and response to endovascular reperfusion after stroke (DEFUSE 2): a prospective cohort study
    Maarten G Lansberg
    Stanford Stroke Center, Stanford University School of Medicine, Stanford, CA, USA
    Lancet Neurol 11:860-7. 2012
    ..We aimed to establish whether MRI can be used to identify patients who are most likely to benefit from endovascular reperfusion...
  32. pmc Challenges of High-resolution Diffusion Imaging of the Human Medial Temporal Lobe in Alzheimer Disease
    Michael M Zeineh
    Stanford University, Stanford, CA 94305 5105, USA
    Top Magn Reson Imaging 21:355-65. 2010
    ..The rewards of such analysis may be detection of microscopic disease in vivo, which could represent a landmark accomplishment for the field of neuroradiology...
  33. pmc Self-encoded marker for optical prospective head motion correction in MRI
    Christoph Forman
    Department of Radiology, Stanford University, Stanford, CA, USA
    Med Image Anal 15:708-19. 2011
    ..15° in translation and rotation, respectively. In in vivo experiments, the motion compensated images in scans with large motion during data acquisition indicate a correlation of 0.982 compared to a corresponding motion-free reference...
  34. ncbi request reprint Arithmetic ability and parietal alterations: a diffusion tensor imaging study in velocardiofacial syndrome
    Naama Barnea-Goraly
    Department of Psychiatry and Behavioral Sciences, 401 Quarry Rd, Stanford University School of Medicine, Stanford, CA 94305, USA
    Brain Res Cogn Brain Res 25:735-40. 2005
    ..Inferior parietal lobe white matter structural aberrations may contribute to reduced arithmetic ability in VCFS...
  35. pmc Perfusion mapping with multiecho multishot parallel imaging EPI
    Rexford D Newbould
    Lucas MRS I Center, Department of Radiology, Stanford University, Stanford, California 94305 5488, USA
    Magn Reson Med 58:70-81. 2007
    ..The use of this method for DSC addresses the problem of signal saturation and T(1) contamination while it improves image quality, and is a logical step toward better quantitative MR PWI...
  36. pmc Prognostic value of brain diffusion-weighted imaging after cardiac arrest
    Christine A C Wijman
    Stanford Stroke Center, Department of Neurology and Neurological Sciences, Stanford University, Palo Alto, CA 94304, USA
    Ann Neurol 65:394-402. 2009
    ..Outcome prediction is challenging in comatose postcardiac arrest survivors. We assessed the feasibility and prognostic utility of brain diffusion-weighted magnetic resonance imaging (DWI) during the first week...
  37. pmc An auto-calibrated, angularly continuous, two-dimensional GRAPPA kernel for propeller trajectories
    Stefan Skare
    Lucas MRS I Center, Department of Radiology, Stanford University, Stanford, CA 94305, USA
    Magn Reson Med 60:1457-65. 2008
    ..This new angularly continuous kernel formulation greatly increases the numerical stability of the GRAPPA weight estimation, allowing for generation of fully sampled diagnostic quality images using only the undersampled propeller data...
  38. pmc Patients with acute stroke treated with intravenous tPA 3-6 hours after stroke onset: correlations between MR angiography findings and perfusion- and diffusion-weighted imaging in the DEFUSE study
    Michael P Marks
    Department of Radiology, Neurosurgery, Stanford University Medical Center, Stanford, CA 94305 5105, USA
    Radiology 249:614-23. 2008
    ..To study magnetic resonance (MR) angiography findings in patients with acute stroke treated with intravenous tissue plasminogen activator (tPA) in relationship to perfusion- and diffusion-weighted imaging changes and clinical outcome...
  39. pmc RAPID automated patient selection for reperfusion therapy: a pooled analysis of the Echoplanar Imaging Thrombolytic Evaluation Trial (EPITHET) and the Diffusion and Perfusion Imaging Evaluation for Understanding Stroke Evolution (DEFUSE) Study
    Maarten G Lansberg
    Stanford University, Stanford Stroke Center, 780 Welch Road, Suite 205, Palo Alto, CA 94304, USA
    Stroke 42:1608-14. 2011
    ..The aim of this study was to determine if automated MRI analysis software (RAPID) can be used to identify patients with stroke in whom reperfusion is associated with an increased chance of good outcome...
  40. ncbi request reprint Occipital-callosal pathways in children: Validation and atlas development
    Robert F Dougherty
    Stanford Institute for Reading and Learning, Stanford, CA, USA
    Ann N Y Acad Sci 1064:98-112. 2005
    ..The properties of these fiber bundles match those of the hypothetical pathways described in the neurological literature on alexia...
  41. pmc Using diffusion tensor imaging and fiber tracking to characterize diffuse perinatal white matter injury: a case report
    Jason D Yeatman
    Department of Pediatrics, Stanford University, School of Medicine, Stanford, California 94304, USA
    J Child Neurol 24:795-800. 2009
    ..Quantitative measures suggested myelin deficiencies across the corpus callosum, particularly in parietal projections...
  42. ncbi request reprint Measuring brain oxygenation in humans using a multiparametric quantitative blood oxygenation level dependent MRI approach
    Thomas Christen
    Department of Radiology, Stanford University, Stanford, California, USA
    Magn Reson Med 68:905-11. 2012
    ..The results obtained in this study suggest that this methodology could be applied to study brain hypoxia in the setting of pathology...
  43. doi request reprint Ultra-high resolution diffusion tensor imaging of the microscopic pathways of the medial temporal lobe
    Michael M Zeineh
    Stanford University, Stanford, CA 94305 5105, USA
    Neuroimage 62:2065-82. 2012
    ..Tractography performed on a subset of the data identified similar tracks, although they were lesser in number. This detailed analysis of MTL substructure may have applications to clinical populations...
  44. pmc Parallel imaging reconstruction for arbitrary trajectories using k-space sparse matrices (kSPA)
    Chunlei Liu
    Lucas Center for MR Spectroscopy and Imaging, Department of Radiology, Stanford University, Stanford, California, USA
    Magn Reson Med 58:1171-81. 2007
    ..The kSPA algorithm is noniterative and the computed sparse approximate inverse can be applied repetitively to reconstruct all subsequent images. This algorithm, therefore, is particularly suitable for the aforementioned applications...
  45. ncbi request reprint Acute stroke imaging research roadmap
    Max Wintermark
    University of California, San Francisco, Department of Radiology, Neuroradiology Section, 505 Parnassus Avenue, Box 0628, San Francisco, CA 94143 0628, USA
    Stroke 39:1621-8. 2008
    ..The present article summarizes these recommendations and examines practical steps to achieve them...
  46. pmc Augmented generalized SENSE reconstruction to correct for rigid body motion
    Roland Bammer
    Lucas Center, Department of Radiology, Stanford University, Stanford, California 94305 5488, USA
    Magn Reson Med 57:90-102. 2007
    ..Conventional spiral scans and scans corrected with proposed techniques are shown, and the results illustrate the capacity of this new correction approach...
  47. ncbi request reprint Simultaneous phase correction and SENSE reconstruction for navigated multi-shot DWI with non-cartesian k-space sampling
    Chunlei Liu
    Lucas MRS I Center, Department of Radiology, Stanford University, Stanford, CA 94305 5488, USA
    Magn Reson Med 54:1412-22. 2005
    ..Effective phase correction and multi-shot SENSE DWI (R = 1 to 3) are demonstrated on both simulated and in vivo data acquired with PROPELLER and SNAILS...
  48. ncbi request reprint Limitations of apparent diffusion coefficient-based models in characterizing non-gaussian diffusion
    Chunlei Liu
    Lucas MRS I Center, Department of Radiology, Stanford University, Stanford, California 94305 5488, USA
    Magn Reson Med 54:419-28. 2005
    ..The issue of imaging asymmetric microstructures is also investigated. Signal phase and spin exchange are necessary to resolve multiple orientations of an asymmetric structure...
  49. pmc Magnetic resonance imaging profile of blood-brain barrier injury in patients with acute intracerebral hemorrhage
    Didem Aksoy
    Stanford Neurocritical Care Program, Stanford Stroke Center, Stanford University Medical Center, Stanford, CA, USA
    J Am Heart Assoc 2:e000161. 2013
    ..We also investigated whether hematoma size or location affected the amount of BBB leakage...
  50. pmc Combined prospective and retrospective correction to reduce motion-induced image misalignment and geometric distortions in EPI
    Melvyn B Ooi
    Department of Radiology, Stanford University, Stanford, California 94305, USA
    Magn Reson Med 69:803-11. 2013
    ..The combined method is also assessed in a blood oxygen level dependent functional MRI task, resulting in improved Z-score statistics...
  51. doi request reprint Functional brain basis of hypnotizability
    Fumiko Hoeft
    Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA 94305, USA
    Arch Gen Psychiatry 69:1064-72. 2012
    ..Pain and anxiety can be effectively alleviated by hypnotic suggestion, which modulates activity in brain regions associated with focused attention, but the specific neural network underlying this phenomenon is not known...
  52. pmc Compensation of slice profile mismatch in combined spin- and gradient-echo echo-planar imaging pulse sequences
    Heiko Schmiedeskamp
    Lucas Center, Department of Radiology, Stanford University, Stanford, California 94305 5488, USA
    Magn Reson Med 67:378-88. 2012
    ....
  53. pmc Advanced diffusion-weighted magnetic resonance imaging techniques of the human spinal cord
    Jalal B Andre
    Department of Radiology, Stanford University, Stanford, CA 94305 5105, USA
    Top Magn Reson Imaging 21:367-78. 2010
    ..This review provides a synopsis of the many recent advances in DWI of the human spinal cord, as well as some of the more common clinical uses for these techniques, including DTI and tractography...
  54. pmc An introduction to model-independent diffusion magnetic resonance imaging
    Anh T Van
    Department of Radiology, Stanford University, Stanford, CA 94304, USA
    Top Magn Reson Imaging 21:339-54. 2010
    ..A review of the currently used q-space-based protocols in clinical research is also provided...
  55. pmc Effects of motion and b-matrix correction for high resolution DTI with short-axis PROPELLER-EPI
    Murat Aksoy
    Lucas Center, Department of Radiology, Stanford University, Stanford, CA 94305 5488, USA
    NMR Biomed 23:794-802. 2010
    ..Our simulations and in-vivo studies showed that, in the presence of patient motion, correcting the b-matrix is necessary in order to get more accurate diffusion tensor and white matter pathway reconstructions...
  56. pmc COMT genotype affects prefrontal white matter pathways in children and adolescents
    Moriah E Thomason
    Department of Psychology, Stanford University, Jordan Hall, Bldg 420, Stanford, CA 94305 2130, USA
    Neuroimage 53:926-34. 2010
    ..This investigation paves the way for further studies of how common functional variants in the genome might influence the development of brain white matter...
  57. pmc Fast parallel spiral chemical shift imaging at 3T using iterative SENSE reconstruction
    Dirk Mayer
    Stanford University, Richard M Lucas Center for Magnetic Resonance Spectroscopy and Imaging, Department of Radiology, Stanford, California 94305 5488, USA
    Magn Reson Med 59:891-7. 2008
    ....
  58. ncbi request reprint Propeller EPI in the other direction
    Stefan Skare
    Lucas MRS I Center, Department of Radiology, Stanford University, CA 94305, USA
    Magn Reson Med 55:1298-307. 2006
    ..Further, the oblique blades for the long-axis propeller EPI were also prone to one order of magnitude higher residual ghosting than the proposed short-axis propeller EPI...
  59. ncbi request reprint Characterizing non-Gaussian diffusion by using generalized diffusion tensors
    Chunlei Liu
    Department of Radiology, Stanford University, Stanford, California 94305 5488, USA
    Magn Reson Med 51:924-37. 2004
    ..The HOT method helps illuminate some of the restrictions that are characteristic of these other methods. Furthermore, a direct relationship between HOT and q-space is also established...
  60. ncbi request reprint Self-navigated interleaved spiral (SNAILS): application to high-resolution diffusion tensor imaging
    Chunlei Liu
    Lucas MRS I Center, Department of Radiology, Stanford University, California 94305 5488, USA
    Magn Reson Med 52:1388-96. 2004
    ..To our knowledge, this was also the first time in vivo 512 x 512 DTI results were reported...
  61. pmc Readout-segmented EPI for rapid high resolution diffusion imaging at 3 T
    Samantha J Holdsworth
    Lucas Center, Department of Radiology, Stanford University, 1201 Welch Road, Stanford, CA 94305 5488, USA
    Eur J Radiol 65:36-46. 2008
    ..This paper shows that the RS-EPI scheme may be an important alternative sampling strategy to EPI to achieve high resolution T2-weighted and diffusion-weighted images...
  62. doi request reprint Comparison of readout-segmented echo-planar imaging (EPI) and single-shot EPI in clinical application of diffusion-weighted imaging of the pediatric brain
    Kristen W Yeom
    Department of Radiology, Stanford University, Palo Alto, CA 94304, USA
    AJR Am J Roentgenol 200:W437-43. 2013
    ....
  63. ncbi request reprint Efficient simulation of magnetic resonance imaging with Bloch-Torrey equations using intra-voxel magnetization gradients
    Thies H Jochimsen
    Department of Radiology, Lucas MRS I Center, Stanford University, 1201 Welch Road, CA 94305, USA
    J Magn Reson 180:29-38. 2006
    ..It is shown that the algorithm is most applicable to simulating the effect of field perturbations, i.e. intra-voxel dephasing, but is also useful for other typical imaging experiments and the simulation of diffusion weighting...
  64. pmc Functional organization of human occipital-callosal fiber tracts
    Robert F Dougherty
    Stanford Institute for Reading and Learning, Department of Psychology, Stanford University, Stanford, CA 94305, USA
    Proc Natl Acad Sci U S A 102:7350-5. 2005
    ..We conclude that most of the estimated tracts are real and can be localized with a precision of 1-2 mm, but many tracts are missed because of data and algorithm limitations...
  65. ncbi request reprint Line scan diffusion imaging of the spine
    Roland Bammer
    Lucas MRS I Center, Department of Radiology, Stanford University, Stanford, CA 94305, USA
    AJNR Am J Neuroradiol 24:5-12. 2003
    ..Multi-section line scan diffusion imaging of the spine was implemented and evaluated to provide quantitative diffusion measurements of vertebral bodies and intervertebral disks...
  66. ncbi request reprint Diffusion tensor imaging using single-shot SENSE-EPI
    Roland Bammer
    Department of Radiology, Lucas MRS I Center, Stanford University, Stanford, California 94305 5488, USA
    Magn Reson Med 48:128-36. 2002
    ..Error boundaries for residual fluctuations in SENSE reconstructions are discussed. Our results suggest that SENSE can be combined with DTI and may present an important adjunct for future neuroimaging applications of this technique...
  67. pmc Magnetic resonance imaging techniques: fMRI, DWI, and PWI
    Samantha J Holdsworth
    Lucas MRS I Center, Department of Radiology, Stanford University, 1201 Welch Road, Stanford, CA 94305, USA
    Semin Neurol 28:395-406. 2008
    ..As such, this review article is devoted to the technological aspects of these techniques, as well as their roles and limitations in neuroimaging applications...
  68. pmc Mild traumatic brain injury: is diffusion imaging ready for primetime in forensic medicine?
    Elan J Grossman
    Center for Biomedical Imaging, Department of Radiology, New York University School of Medicine, NY, USA
    Top Magn Reson Imaging 21:379-86. 2010
    ....
  69. pmc Real-time diffusion-perfusion mismatch analysis in acute stroke
    Matus Straka
    Department of Radiology, Stanford University, Stanford, California 94305 5488, USA
    J Magn Reson Imaging 32:1024-37. 2010
    ..The mismatch information is made available on the hospital's PACS within 5-7 min. Results indicate that the automated system is sufficiently accurate and fast enough to be used for routine care as well as in clinical trials...
  70. pmc Foundations of advanced magnetic resonance imaging
    Roland Bammer
    Lucas MRS I Center, Department of Radiology, Stanford University, California, USA
    NeuroRx 2:167-96. 2005
    ..This article provides an overview of the most common advanced MRI methods including diffusion MRI, perfusion MRI, functional MRI, and the strengths and weaknesses of MRI at high magnetic field strengths...
  71. ncbi request reprint Restricted field of view magnetic resonance imaging of a dynamic time series
    Laura Pisani
    Lucas Center, Department of Radiology, Stanford University, Stanford, California 94305 5488, USA
    Magn Reson Med 57:297-307. 2007
    ..Sequence utility is demonstrated for high-resolution rFOV functional MRI (fMRI) in the visual cortex. The rFOV sequence may prove to be useful for other multislice dynamic and high-resolution imaging applications...
  72. ncbi request reprint Arterial spin-label imaging in patients with normal bolus perfusion-weighted MR imaging findings: pilot identification of the borderzone sign
    Greg Zaharchuk
    Department of Radiology, Stanford University Medical Center, 1201 Welch Rd, PS 04, MC 5488, Stanford, CA 94305 5488, USA
    Radiology 252:797-807. 2009
    ..To determine whether perfusion abnormalities are depicted on arterial spin-labeling (ASL) images obtained in patients with normal bolus perfusion-weighted (PW) magnetic resonance (MR) imaging findings...
  73. ncbi request reprint Single breath-hold diffusion-weighted imaging of the abdomen
    Lawrence C Chow
    Department of Radiology, Stanford University Medical Center, Stanford, California 94305, USA
    J Magn Reson Imaging 18:377-82. 2003
    ..To generate high quality diffusion-weighted images (DWI) and corresponding isotropic ADC maps of the abdomen with full organ (kidneys) coverage in a single breath-hold...
  74. ncbi request reprint Magnetic resonance imaging profiles predict clinical response to early reperfusion: the diffusion and perfusion imaging evaluation for understanding stroke evolution (DEFUSE) study
    Gregory W Albers
    Department of Neurology and Neurological Sciences and the Stanford Stroke Center, Stanford University Medical Center, Stanford, CA 94304, USA
    Ann Neurol 60:508-17. 2006
    ..To determine whether prespecified baseline magnetic resonance imaging (MRI) profiles can identify stroke patients who have a robust clinical response after early reperfusion when treated 3 to 6 hours after symptom onset...
  75. pmc The MRA-DWI mismatch identifies patients with stroke who are likely to benefit from reperfusion
    Maarten G Lansberg
    Stanford Stroke Center, 701 Welch Road, Suite B325, Palo Alto, CA 94304 9705, USA
    Stroke 39:2491-6. 2008
    ....
  76. ncbi request reprint CT angiography of the subclavian artery: utility of curved planar reformations
    Rupert W Prokesch
    Department of Radiology, Stanford University, Stanford, CA 94305 5488, USA
    J Comput Assist Tomogr 26:199-201. 2002
    ..We present a case of severe left subclavian artery stenosis that demonstrates the utility of curved planar reformation in providing a concise visual summary of the pertinent anatomy and abnormalities...
  77. pmc Optimal Tmax threshold for predicting penumbral tissue in acute stroke
    Jean Marc Olivot
    Department of Neurology and Neurological Sciences and the Stanford Stroke Center, Stanford University Medical Center, Palo Alto, CA 94304, USA
    Stroke 40:469-75. 2009
    ..We sought to assess whether the volume of the ischemic penumbra can be estimated more accurately by altering the threshold selected for defining perfusion-weighting imaging (PWI) lesions...
  78. ncbi request reprint Comparison of minimally invasive and conventional open posterolateral lumbar fusion using magnetic resonance imaging and retraction pressure studies
    Kathryn J Stevens
    Department of Radiology, Stanford University Medical Center, CA 94305, USA
    J Spinal Disord Tech 19:77-86. 2006
    ..To determine whether minimally invasive lumbar spinal fusion results in less paraspinal muscle damage than conventional open posterior fusion...
  79. ncbi request reprint Current concepts and advances in clinical parallel magnetic resonance imaging
    Roland Bammer
    Lucas MRS I Center, Department of Radiology, Stanford University, 1201 Welch Road, Stanford, CA 94305 5488, USA
    Top Magn Reson Imaging 15:129-58. 2004
    ..The critical review demonstrates PI's great versatility as well as the current trends to use this unique technique in the majority of clinical scan protocols...
  80. pmc Relationships between infarct growth, clinical outcome, and early recanalization in diffusion and perfusion imaging for understanding stroke evolution (DEFUSE)
    Jean Marc Olivot
    Department of Neurology and Neurological Sciences and the Stanford Stroke Center, Stanford University Medical Center, 701 Welch Road, Suite 325, Palo Alto, CA 94304, USA
    Stroke 39:2257-63. 2008
    ..The purpose of this study was to determine the relationships between ischemic lesion growth, recanalization, and clinical response in stroke patients with and without a perfusion/diffusion mismatch...
  81. pmc Relationships between cerebral perfusion and reversibility of acute diffusion lesions in DEFUSE: insights from RADAR
    Jean Marc Olivot
    Department of Neurology, Stanford Stroke Center, Stanford University Medical Center, Palo Alto, CA 94304, USA
    Stroke 40:1692-7. 2009
    ..Acute ischemic lesions with restricted diffusion can resolve after early recanalization. The impact of superimposed perfusion abnormalities on the fate of acute diffusion lesions is unclear...
  82. pmc Evaluation of the clinical-diffusion and perfusion-diffusion mismatch models in DEFUSE
    Maarten G Lansberg
    Stanford Stroke Center, Stanford University Medical Center, Palo Alto, CA 94304, USA
    Stroke 38:1826-30. 2007
    ..The clinical-diffusion mismatch (CDM) model is an alternative method that is technically less challenging because it does not require perfusion-weighted imaging. This study is an evaluation of these 2 models in the DEFUSE dataset...
  83. ncbi request reprint Children's reading performance is correlated with white matter structure measured by diffusion tensor imaging
    Gayle K Deutsch
    Department of Psychology, Stanford University, Stanford, CA 94305, USA
    Cortex 41:354-63. 2005
    ....
  84. ncbi request reprint White matter development during childhood and adolescence: a cross-sectional diffusion tensor imaging study
    Naama Barnea-Goraly
    Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA 94305, and Department of Psychology, Children s Hospital of Orange County, Orange, CA 92868, USA
    Cereb Cortex 15:1848-54. 2005
    ..This typical developmental trajectory may be altered in individuals with disorders of development, cognition and behavior...
  85. ncbi request reprint Self-encoded marker for optical prospective head motion correction in MRI
    Christoph Forman
    Department of Radiology, Stanford University, Stanford, California, USA
    Med Image Comput Comput Assist Interv 13:259-66. 2010
    ..In in-vivo experiments, the motion compensated images in scans with large motion during data acquisition indicate a correlation of 0.982 compared to a corresponding motion-free reference...
  86. pmc Prefrontal plasticity and stress inoculation-induced resilience
    Maor Katz
    Department of Psychiatry, Stanford University, Stanford, Calif, USA
    Dev Neurosci 31:293-9. 2009
    ..These findings suggest that the process of coping with early life stress increases prefrontal myelination and expands a region of cortex that broadly controls arousal regulation and resilience...
  87. pmc Cognitive processing speed and the structure of white matter pathways: convergent evidence from normal variation and lesion studies
    Andu Turken
    Department of Psychology, Stanford University, Stanford, CA 94305, USA
    Neuroimage 42:1032-44. 2008
    ..Further, fiber tractography applied to VBM results and the patient findings suggest that the superior longitudinal fasciculus, a major tract subserving fronto-parietal integration, makes a prominent contribution to processing speed...
  88. ncbi request reprint Diffusion imaging of the human spinal cord and the vertebral column
    Roland Bammer
    Lucas MRS I Center, Stanford University, Stanford, CA 94305 5488, USA
    Top Magn Reson Imaging 14:461-76. 2003
    ..Finally, experimental and clinical applications in the spinal cord and the vertebral column and their clinical relevance thus far are reviewed...
  89. ncbi request reprint Parallel imaging of the abdomen
    Daniel Jason Aaron Margolis
    Department of Radiology, Stanford University Medical Center, Stanford, CA 94305 5105, USA
    Top Magn Reson Imaging 15:197-206. 2004
    ..All of these potential advantages come with the trade-off of decreased signal-to-noise ratio, but for many patients, the benefits far outweigh the drawbacks and can vastly improve the diagnostic quality of abdominal MRI...
  90. pmc Cutting-edge imaging of the spine
    A Talia Vertinsky
    Stanford University, Department of Radiology, Lucas Center, PS08, 1201 Welch Road, Stanford, CA 94305 5488, USA
    Neuroimaging Clin N Am 17:117-36. 2007
    ..These new "cutting-edge" technologies have the potential to impact profoundly the ease and confidence of spinal disease interpretation and offer a more efficient diagnostic workup of patients suffering from spinal disease...
  91. pmc Time-resolved 3D quantitative flow MRI of the major intracranial vessels: initial experience and comparative evaluation at 1.5T and 3.0T in combination with parallel imaging
    Roland Bammer
    Lucas Center, Department of Radiology, Stanford University, Stanford, California 94305 5488, USA
    Magn Reson Med 57:127-40. 2007
    ..The 4D flow measurements provided a high degree of vascular conspicuity. Time-resolved streamline analysis provided features that have not been reported previously for the intracranial vasculature...
  92. pmc Peak velocity and flow quantification validation for sensitivity-encoded phase-contrast MR imaging
    Calvin D Lew
    Lucas MRS I Center, Stanford University, 1201 Welch Road, Stanford, CA 94305
    Acad Radiol 14:258-69. 2007
    ..Parallel imaging using sensitivity encoding (SENSE) may substantially reduce scan time. We demonstrate the utility of PC-MRI measurements accelerated by SENSE under clinical conditions...
  93. ncbi request reprint Balanced SSFP imaging of the musculoskeletal system
    Garry E Gold
    Department of Radiology, Stanford University, Stanford, California, USA
    J Magn Reson Imaging 25:270-8. 2007
    ..Sensitivity to fluid and fat suppression are important issues in these techniques to improve delineation of cartilage contours, for detection of marrow edema and derangement of other joint structures...
  94. ncbi request reprint Diffusion-tensor imaging of cognitive performance
    Michael Moseley
    Department of Radiology, 1201 Welch Road, Lucas MR Center, Stanford University School of Medicine, Stanford, CA 94305 5488, USA
    Brain Cogn 50:396-413. 2002
    ....
  95. ncbi request reprint Inter-sequence and inter-imaging unit variability of diffusion tensor MR imaging histogram-derived metrics of the brain in healthy volunteers
    Mara Cercignani
    Neuroimaging Research Unit, Department of Neuroscience, Scientific Institute, Milan, Italy
    AJNR Am J Neuroradiol 24:638-43. 2003
    ....
  96. pmc Identifying systematic errors in quantitative dynamic-susceptibility contrast perfusion imaging by high-resolution multi-echo parallel EPI
    Thies H Jochimsen
    Max Planck Institute for Human Cognitive and Brain Sciences, Stephanstr 1a, D 04103 Leipzig, Germany
    NMR Biomed 20:429-38. 2007
    ..Therefore, DSC-MRI requires knowledge of the exact dependency of transverse relaxation rate upon tracer concentration in order to calculate truly quantitative perfusion maps...
  97. ncbi request reprint Reduced relationship to cortical white matter volume revealed by tractography-based segmentation of the corpus callosum in young children with developmental delay
    Carissa Cascio
    Department of Psychiatry, University of North Carolina, Chapel Hill, NC 27599 3367, USA
    Am J Psychiatry 163:2157-63. 2006
    ..The purpose of this study was to measure the corpus callosum in a clinical group of developmentally delayed children using a subdivision that more accurately reflected the anatomical properties of the corpus callosum...
  98. pmc Optimal definition for PWI/DWI mismatch in acute ischemic stroke patients
    Wataru Kakuda
    Department of Rehabilitation Medicine, Jikei University School of Medicine, Minato ku, Tokyo, Japan
    J Cereb Blood Flow Metab 28:887-91. 2008
    ..Defining mismatch with a larger PWI/DWI ratio may provide greater power for detecting beneficial effects of reperfusion...
  99. pmc Comparison of reconstruction accuracy and efficiency among autocalibrating data-driven parallel imaging methods
    Anja C S Brau
    Global Applied Science Lab, GE Healthcare, Menlo Park, CA 94025, USA
    Magn Reson Med 59:382-95. 2008
    ..This analysis may help guide the selection of PI methods for a given imaging task to achieve high reconstruction accuracy at minimal computational expense...
  100. ncbi request reprint Local staging of pancreatic carcinoma with multi-detector row CT: use of curved planar reformations initial experience
    Rupert W Prokesch
    Departments of Radiology, Lucas MRS Center, Stanford University, Calif USA
    Radiology 225:759-65. 2002
    ..To evaluate the utility of curved planar reformations compared with standard transverse images in the assessment of pancreatic tumors...
  101. ncbi request reprint Influence of arterial input function on hypoperfusion volumes measured with perfusion-weighted imaging
    Vincent N Thijs
    Department of Neurology, UZ Gasthuisberg, Herestraat 49, B 3000 Leuven, Belgium
    Stroke 35:94-8. 2004
    ..We studied the effect of varying the location of measurement of AIF on the volume of hypoperfusion. We compared the volumes of hypoperfusion obtained with different AIFs with the final ischemic lesion volume...