Radio-Frequency Heating in Swine with an 8-Channel, 7T (296 MHz) Head Coil

Devashish Shrivastava¹, Jeramy Kulesa¹, Jinfeng Tian¹, Gregor Adriany¹, Lance DelaBarre¹, J. T. Vaughan¹

Radio-frequency (RF) heating was fluoroptically measured in the scalp; 5 mm, 10 mm, 15 mm, 20 mm, and 25 mm in the brain; and rectum in three anesthetized swine due to a continuous wave power deposition with a 7T head coil at the average whole head SAR of 2.94 W/kg. The RF heating was simulated using the new, theoretical generic bioheat transfer model (GBHTM) and the empirical Pennes bioheat transfer equation (BHTE). The average temperature change in the brain was 2.1 0C after 3 hours of the power deposition. The GBHTM simulated RF heating more accurately than the Pennes BHTE.