Research Topics
| K SchefflerSummaryAffiliation: University of Basel Country: Switzerland Publications
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Detail Information
Publications
Auditory cortical responses in hearing subjects and unilateral deaf patients as detected by functional magnetic resonance imagingK Scheffler
MR Center and Biocenter, University of Basel, Switzerland
Cereb Cortex 8:156-63. 1998..This observation seems to indicate a plasticity or a reorganization of auditory pathways of monaural deaf patients...- Titration of the BOLD effect: separation and quantitation of blood volume and oxygenation changes in the human cerebral cortex during neuronal activation and ferumoxide infusionK Scheffler
MR Center and Biocenter, University of Basel, Basel, Switzerland
Magn Reson Med 42:829-36. 1999..Magn Reson Med 42:829-836, 1999... - Effect of ethanol on BOLD response to acoustic stimulation: implications for neuropharmacological fMRIE Seifritz
Department of Psychiatry, University of Basel, Basel, Switzerland
Psychiatry Res 99:1-13. 2000..Although the FBD model needs empirical validation, its cautious implementation appears to be helpful if fMRI is used in combination with vasoactive drugs... - Auditory system: functional magnetic resonance imagingE Seifritz
Department of Psychiatry, University of Basel, Basel, Switzerland
Neuroimaging Clin N Am 11:275-96, ix. 2001..It is expected that novel methodologic approaches will stimulate scientific exploration of auditory processing and eventually lead to clinically meaningful applications of auditory fMRI... - Optimized balanced steady-state free precession magnetization transfer imagingO Bieri
MR Physics, Department of Medical Radiology, University of Basel, Basel, Switzerland
Magn Reson Med 58:511-8. 2007..In summary, a novel method to generate MTR maps using bSSFP image acquisitions is presented and factors that optimize and influence this contrast are discussed... - Morphing steady-state free precessionO Bieri
MR Physics, Department of Medical Radiology, University of Basel, Basel, Switzerland
Magn Reson Med 58:1242-8. 2007.... - On the origin of apparent low tissue signals in balanced SSFPO Bieri
MR Physics, Department of Medical Radiology, University of Basel, Basel, Switzerland
Magn Reson Med 56:1067-74. 2006..As a result, bSSFP signal is strongly attenuated by up to a factor of 2 in the human brain compared to the signal expected from theory... - Effect of diffusion in inhomogeneous magnetic fields on balanced steady-state free precessionO Bieri
MR Physics, Department of Medical Radiology, University of Basel, Basel, Switzerland
NMR Biomed 20:1-10. 2007.... - Balanced alternating steady-state elastographyO Bieri
MR Physics, Department of Medical Radiology, University of Basel, Basel, Switzerland
Magn Reson Med 55:233-41. 2006..In addition, the new method benefits from the very short acquisition times achieved by b-SSFP protocols... - Double average parallel steady-state free precession imaging: optimized eddy current and transient oscillation compensationM Markl
Department of Diagnostic Radiology, Medical Physics, University Hospital Freiburg, Germany
Magn Reson Med 54:965-74. 2005..The proposed technique can easily be extended to other acquisition schemes that would benefit from nonlinear reordering schemes and/or rely on interruption of the balanced SSFP steady state... - Flow compensation in balanced SSFP sequencesO Bieri
MR Physics, Department of Medical Radiology, University of Basel, Switzerland
Magn Reson Med 54:901-7. 2005.... - Analysis and compensation of eddy currents in balanced SSFPO Bieri
MR Physics, Department of Medical Radiology, University of Basel, Basel, Switzerland
Magn Reson Med 54:129-37. 2005..Both pairing of the PE steps and "through-slice equilibration" are easy to implement and allow the use of arbitrary k-space trajectories for balanced SSFP... - Optimized spectrally selective steady-state free precession sequences for cartilage imaging at ultra-high fieldsO Bieri
MR Physics, Department of Medical Radiology, University of Basel, Petersgraben 4, 4031 Basel, Switzerland
MAGMA 21:87-94. 2008..However, ultra-high fields (7.0 T and more) may offer alternative fat suppression techniques as a result of the increased chemical shift... - Arterial first pass gadolinium-CM dynamics as a function of several intravenous saline flush and Gd volumesM Boos
Department of Radiology, University-Hospital, Basel, Switzerland
J Magn Reson Imaging 13:568-76. 2001..Doses larger than a single dose are not needed to increase the SNR in contrast-enhanced magnetic resonance angiography images of the thoracic aorta... - Functional fields in human auditory cortex revealed by time-resolved fMRI without interference of EPI noiseF Di Salle
Department of Biomorphological and Functional Sciences, University of Naples Federico II, Italy
Neuroimage 13:328-38. 2001..These differences, attributable to reciprocal saturation effects unevenly distributed over the superior temporal cortex, provided evidence for functionally distinct auditory fields... - MR angiography of dural arteriovenous fistulas: diagnosis and follow-up after treatment using a time-resolved 3D contrast-enhanced techniqueS Meckel
Division of Neuroradiology, Institute of Radiology, University Hospital, Basel, Switzerland
AJNR Am J Neuroradiol 28:877-84. 2007..The goal of this study was to analyze the value of different MR images including 3D contrast-enhanced MR angiography (MRA) with a high temporal resolution in diagnostic and follow-up imaging of DAVFs... - In vivo assessment and visualization of intracranial arterial hemodynamics with flow-sensitized 4D MR imaging at 3TS Wetzel
Department of Medical Radiology, Institute of Neuroradiology, University Hospital of Basel, Basel, Switzerland
AJNR Am J Neuroradiol 28:433-8. 2007..In a patient with steno-occlusive neurovascular disease, stagnant and retrograde flow patterns were readily visible... - Dynamic time-resolved contrast-enhanced two-dimensional MR projection angiography of the pulmonary circulation: standard technique and clinical applicationsS Sonnet
Department of Radiology, University Hospital Basel, Petersgraben 4, 4051 Basel, Switzerland
AJR Am J Roentgenol 179:159-65. 2002..The latter capability allows qualitative detection of normal or abnormal pathways and thus is potentially of value in the assessment of several pulmonary disorders... - B22956/1, a new intravascular contrast agent for MRI: first administration to humans--preliminary resultsAnna La Noce
Bracco Imaging S.p.A, Milan, Italy
Acad Radiol 9:S404-6. 2002 - Alternating repetition time balanced steady state free precessionJ Leupold
Department of Diagnostic Radiology, Medical Physics, University Hospital Freiburg, Freiburg, Germany
Magn Reson Med 55:557-65. 2006..The total scan time is increased by about 30% compared to conventional balanced SSFP. The new technique was applied on phantoms and volunteers to produce rapid, fat suppressed images... - Fast 31P chemical shift imaging using SSFP methodsO Speck
Department of Diagnostic Radiology, Section Medical Physics, University Medical Center, Freiburg, Germany
Magn Reson Med 48:633-9. 2002..The SNR gain for PCr over a FLASH-based CSI method is approx. 4-5. Fast in vivo CSI of human muscle with subcentimeter resolution and high SNR is demonstrated at 2 T... - DCE-MRI in clinical trials: data acquisition techniques and analysis methodsR Strecker
University Hospital, Albert Ludwigs University, Freiburg, Germany
Int J Clin Pharmacol Ther 41:603-5. 2003 - Basics of non-invasive angiography contrast-enhanced magnetic resonance angiographyK Scheffler
MR-Physics, Department of Medical Radiology, University Hospital Basel, Switzerland
JBR-BTR 86:344-6. 2003..Subsequent postprocessing allows an angiographic display of image data in any desired obliquity. The following part gives an overview and the basic principles of the methods used for CE-MRA...