国际医药卫生导报2012，Vol.18Issue(13)：1841-1843,3.DOI:10.3760/cma.j.issn.1007-1245.2012.13.001
基于头颈肩热塑膜固定的鼻咽癌调强放疗分次内误差分析
Intrafractional setup errors in intensity modulated radiation therapy for nasopharyngeal carcinoma based on head-, neck- and -shoulder thermal model
摘要
Abstract
Objective To analyze the intrafractional set-up errors in intensity modulated radiation therapy ( IMBT )for nasopharyngeal carcinoma based on head-,neck- and -shoulder thermal model.Methods 50 patients with nasopharyngeal carcinoma received IMRT using head-,neck- and -shoulder thermal model.The films on the position of set-up with the anteroposterior ( gantry angle of 0 degrees )and lateral( gantry angle 90 degrees )position were taken after the patients were positioned and administered treatment.The setup errors on X,Y,and Z axes were analyzed with the MOSAIQ system.Results The average duration of treatment for the 50 patients was ( 16.53 + 0.52 ) min.A total of 600films were taken on 50 patients.The intrafraetional setup errors on X,Y and Z axes were ( 0.45 ± 0.32 ) mm,( 0.72 ±0.46 ) mm,and ( 0.63 ± 0.45 ) mm,respectively.Conclusions Although intrafractional setup error in IMRT for nasopharyngeal carcinoma based on head-,neck- and -shoulder thermal model is small,it should be taken into account in deciding the clinical margin of PTV.关键词
鼻咽癌/调强放疗/摆位误差Key words
Nasopharyngeal carcinoma/Intensity modulated radiation therapy/Set-up error引用本文复制引用
徐俊杰,高丽娟,何振宇,钟威,姚继仲,林承光..基于头颈肩热塑膜固定的鼻咽癌调强放疗分次内误差分析[J].国际医药卫生导报,2012,18(13):1841-1843,3.基金项目
广东省科技计划项目(2007803156004) （2007803156004）
