鼻咽癌IMRT治疗前采用CBCT复位的临床研究
发布时间：2018-11-10 13:36
【摘要】：目的探索初治鼻咽癌患者调强放疗(IMRT)治疗前行锥形束CT(CBCT)复位的可行性。方法纳入23例鼻咽癌IMRT治疗患者,以定位中心坐标原点作为计划中心点制订带CBCT验证的逆向调强放射治疗计划,治疗前采用CBCT复位,并于第2、3次放疗前行CBCT扫描,对3次的配准数据进行汇总分析。结果复位CBCT任一方向绝对值小于或等于3mm占89.9%(62/69),5mm占98.6%(68/69),各方向偏差值为(0.6±2.1)mm;第2、3次CBCT任一方向绝对值小于或等于3mm占92.8%(128/138),5mm占99.3%(137/138),各方向偏差值为(0.4±2.0)mm;两组数据比较差异无统计学意义(P0.05)。结论以定位中心坐标原点作为计划中心点制定鼻咽癌IMRT计划,治疗前采用CBCT复位,直观方便切实可行。
[Abstract]:Objective to explore the feasibility of conical bundle CT (CBCT) reduction before intensity-modulated radiotherapy (IMRT) in nasopharyngeal carcinoma. Methods 23 patients with nasopharyngeal carcinoma (NPC) treated with IMRT were included. The plan of inverse intensity modulated radiotherapy with CBCT validation was made with the origin of central coordinate as the planning center. CBCT was repositioned before treatment, and CBCT scanning was performed before the 2nd 3rd radiotherapy. The registration data for 3 times are summarized and analyzed. Results the absolute value of CBCT in either direction was 89.9% (62 / 69), 5mm was 98.6% (68 / 69), the deviation of each direction was (0.6 卤2.1) mm;. The absolute value of CBCT in any direction was less than 92.8% (128 / 138) in any direction and 99.3% (137 / 138) in 5mm. There was no significant difference between the two groups in the deviation of each direction (0.4 卤2.0) mm; (P0.05). Conclusion the IMRT plan of nasopharyngeal carcinoma is made by using the origin of positioning center coordinate as the center of plan, and CBCT reduction is used before treatment, which is intuitionistic, convenient and practical.
【作者单位】： 全军肿瘤诊治研究所/第三军医大学新桥医院肿瘤科;
【分类号】：R739.63
本文编号：2322616
[Abstract]:Objective to explore the feasibility of conical bundle CT (CBCT) reduction before intensity-modulated radiotherapy (IMRT) in nasopharyngeal carcinoma. Methods 23 patients with nasopharyngeal carcinoma (NPC) treated with IMRT were included. The plan of inverse intensity modulated radiotherapy with CBCT validation was made with the origin of central coordinate as the planning center. CBCT was repositioned before treatment, and CBCT scanning was performed before the 2nd 3rd radiotherapy. The registration data for 3 times are summarized and analyzed. Results the absolute value of CBCT in either direction was 89.9% (62 / 69), 5mm was 98.6% (68 / 69), the deviation of each direction was (0.6 卤2.1) mm;. The absolute value of CBCT in any direction was less than 92.8% (128 / 138) in any direction and 99.3% (137 / 138) in 5mm. There was no significant difference between the two groups in the deviation of each direction (0.4 卤2.0) mm; (P0.05). Conclusion the IMRT plan of nasopharyngeal carcinoma is made by using the origin of positioning center coordinate as the center of plan, and CBCT reduction is used before treatment, which is intuitionistic, convenient and practical.
【作者单位】： 全军肿瘤诊治研究所/第三军医大学新桥医院肿瘤科;
【分类号】：R739.63
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