Local specific absorption rate control for parallel transmission by virtual observation points
نویسندگان
چکیده
منابع مشابه
Specific absorption rate monitor for in-vivo parallel transmission at 7 Tesla
When using a transmit array at high field, it is well established that high local specific absorption rate (SAR) values can occur [1]. In order to guarantee patient safety without harsh limitations to in-vivo transmit-SENSE [2] applications, subtle SAR monitoring is therefore necessary. In the recent past, a comprehensive solution involving pre-calculated B1-field-maps and local pickup-coils wa...
متن کاملSpecific absorption rate studies of the parallel transmission of inner-volume excitations at 7T.
PURPOSE To investigate the behavior of whole-head and local specific absorption rate (SAR) as a function of trajectory acceleration factor and target excitation pattern due to the parallel transmission (pTX) of spatially tailored excitations at 7T. MATERIALS AND METHODS Finite-difference time domain (FDTD) simulations in a multitissue head model were used to obtain B(1) (+) and electric field...
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M. Gebhardt, D. Diehl, E. Adalsteinsson, L. L. Wald, and G. Eichfelder Siemens Healthcare, Erlangen, Germany, Siemens Corporate Technology, Erlangen, Germany, Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, United States, Martinos Center for Biomedical Imaging, Harvard University, Charlestown, MA, United States, Applied Mathematics II, Universi...
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A. C. Zelinski, K. Setsompop, V. Alagappan, B. A. Gagoski, L. M. Angelone, G. Bonmassar, U. Fontius, F. Schmitt, E. Adalsteinsson, and L. L. Wald Department of Electrical Engineering and Computer Science, MIT, Cambridge, MA, United States, A. A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, United States, Siemens Medical Solutio...
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ژورنال
عنوان ژورنال: Magnetic Resonance in Medicine
سال: 2011
ISSN: 0740-3194
DOI: 10.1002/mrm.22927