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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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