MRI-based temperature and SAR mapping with a new dual-coil solenoid/birdcage heating/measurement system

Sukhoon Oh, Colin A. Roopnariane, Mohammad Reza Tofighi, Christopher M. Collins

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

We describe an MRI-based method for mapping temperature and specific absorption rate (SAR) using a solenoid coil and a birdcage coil for heating and imaging of a weakly conductive dielectric sample, respectively. The accuracy and the quality of SAR/temperature mapping are enhanced by separating the heating and imaging RF coils. 50 W of RF power is applied to the solenoid coil to heat the conductive agar-gel phantom for 120 sec. Maps of temperature increase were acquired with an MRI-based method. The MR-based measurements were in good agreement with fiber optic measurements. Finally, the dual-coil heating system was simulated using the finite difference time domain (FDTD) method. The distribution of numerically-calculated and experimentally-acquired SAR were also in good agreement.

Original languageEnglish (US)
Title of host publication2010 IEEE Radio and Wireless Symposium, RWW 2010 - Paper Digest
Pages520-522
Number of pages3
DOIs
StatePublished - May 21 2010
Event2010 IEEE Radio and Wireless Symposium, RWW 2010 - New Orleans, LA, United States
Duration: Jan 10 2010Jan 14 2010

Publication series

Name2010 IEEE Radio and Wireless Symposium, RWW 2010 - Paper Digest

Other

Other2010 IEEE Radio and Wireless Symposium, RWW 2010
CountryUnited States
CityNew Orleans, LA
Period1/10/101/14/10

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications

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