Abstract #4909
Body Models of Big People for MRI Safety Assessment
Ingmar Graesslin 1 , Hanno Homann 1 , Holger Eggers 1 , Kay Nehrke 1 , Paul Harvey 2 , Cecilia Possanzini 2 , and Peter Brnert 1
1
Philips Research Laboratories, Hamburg,
Germany,
2
Philips
Healthcare, Best, Netherlands
Estimating the specific absorption rate (SAR) is a
challenge for parallel transmission MRI systems, because
the SAR depends on subject- and coil-specific
parameters. In this work, we present a novel approach to
generate whole-body models for SAR simulations of very
large subjects. The new concept uses 2D multi-station
imaging with lateral virtual FOV enlargement and a
water/fat separating imaging sequence. The main
application area is the development of patient-specific
body models for SAR assessment, which may enable
improved SAR management and reduced scan time in
parallel transmit MRI. This approach can be used for
potential basic diagnostic applications using 2D and 3D
imaging techniques.
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