Abstract：Objective To investigate the feasibility of dosimetric verification for Intensity-modulated Radiation Therapy (IMRT) based on the Seven29TM two-dimensional ion chamber array (2D-array). Methods The IMRT plans of 70 tumor patients (15 patients with head and neck neoplasm, 30 with thoracic neoplasm, 25 with abdominal neoplasm) were designed with Pinnacle 9.8 and copied to dosimetric phantom. The results of IMRT plans were imported to linear accelerators (Siemens Artiste) and the plans were executed. The delivered dose distribution were measured by the Seven29TM and compared with the planned dose distribution. Results The results of Gamma of patients with head and neck, breast, abdomen were 95.29%±2.46%, 96.11%±2.66% and 96.03%±1.98% with a standard error of 3 mm and 3%. The radiation therapeutic regimens all meet the clinical needs of all patients examined. Conclusion The IMRT plans can be verified with PTW Seven29TM in a simple and feasible way.
汪志a，王成b，唐虹a，洪浩a. 基于PTW Seven29TM二维电离室矩阵的调强放疗计划剂量验证[J]. 中国医疗设备, 2016, 31(1): 116-118.
WANG Zhia, WANG Chengb,TANG Honga, HONG Haoa. Dosimetric Verification for Intensity-modulated Radiation Therapy Based on PTW Seven29TM Two-dimensional Ion Chamber Array. China Medical Devices, 2016, 31(1): 116-118.
