Feasibility Study of MR R1-Based 3D Fricke Gel Dosimetry

• Main Authors: Adrian Jy-Kang Liou, 劉致康
• Other Authors: Woei-Chyn Chu
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/71389501929916555992

碩士 === 國立陽明大學 === 醫學工程研究所 === 92 === The MRI-Fricke-infused gel dosimetry has lots of merits. But owing to the ferric ion diffusion phenomenon, all experiments on MR should be finished within 30 minutes after irradiation to keep good accuracy of the dosimetry. The R1-based method can measure the radiation absorbed dose distribution satisfactory, but 3D resolution is limited by the time required. In this study, a feasible study on 3D R1-based gel dosimetry method is conducted. By using MP-RAGE pulse sequence together with appropriate parameters setting; all the merits of Fricke gel dosimetry are reasonably kept.