Evaluation of Magnetic Resonance Mediated Radiofrequency Ablation in Bovine Liver Tissue Using Textile Antenna-Enhanced MR Thermometry.

Motivation: Magnetic resonance-mediated radiofrequency ablation (MR-RFA) combines diagnostic and therapeutic functions within MRI scanners, and its significance has grown rapidly, particularly in tumor treatment diagnosis. Goal(s): In this study, a 3T Philips MRI scanner is channeled toward the ablation site in the bovine liver by means of an antenna and a needle, with the objective of generating RF heating at the tumor location. Approach: MR thermometry was used to evaluate the MR-RFA procedure and predict local specific absorption rate (SAR) escalation and temperature increase. Results: Our research demonstrated that temperature maps with a 73 oC peak value were observed at the needle tip. Impact: In contrast to existing ablation designs, this design provides enhanced patient comfort, localized heating, minimal skin burns, and avoids the use of external RF power sources, all while ensuring there is no distortion in MR images.