ＭＲガイド下マルチチャンネルマイクロ波凝固のためのマルチスライスＭＲ温度モニタリング

概要

論文の詳細を見る
The possibility of MR-guided multi-channel microwave thermocoagulation therapy was examined. Although extension cables and notch filters were required to use a microwave coagulator under MR environments, sufficient output power was obtained at four individual electrodes. New application software for multi-slice MR temperature monitoring was also prepared on an external PC. Flexible slice setting, calculation of temperature changes using corresponding base-line data and display of multi-slice temperature maps were enabled with this application. Simultaneous ablation with 4 electrodes at the corners of 20 mm square for 6 minutes caused 35 × 35 × 30 mm spherical coagulation area in beef liver. The area with temperature increase by over 40 degrees on the multi-slice MR temperature maps was in a good agreement with this coagulated area of the liver. MR-guided multi-channel microwave coagulation with multi-slice MR temperature monitoring will be one useful application for the clinical use.