Abstract #4910
Rapid, Direct Measurement of Bulk RF Power Deposition using Free Induction Decay Acquisitions
Leeor Alon 1,2 , Assaf Tal 1,2 , Giuseppe Carluccio 1,2 , Cem M. Deniz 1,2 , Karthik Lakshmanan 1,2 , Daniel K. Sodickson 1,2 , and Christopher C. Collins 1,2
1
Department of Radiology, Bernard and Irene
Schwartz Center for Biomedical Imaging, New York
University School of Medicine, New York, NY, United
States,
2
Sackler
Institute of Graduate Biomedical Sciences, New York
University School of Medicine, New York, NY, United
States
Whole body and partial body RF power deposition is
typically monitored by estimating the RF power delivered
to the patient in the scanner. In practice however, some
portion of the energy gets deposited in the transmit
chain and coil electronics and different subjects couple
to the coil differently so that the RF power deposited
into the patient may be overestimated. In this work, we
utilize a single excitation pulse and acquire a single
FID before and after exposure to SAR to measure the RF
thermal energy change. Results are shown for phantom and
in-vivo heating experiments.
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