Analysis of set-up accuracy of two body membrane fixation methods in radiotherapy for thoracic neoplasms

VernacularTitle:胸部肿瘤放疗两种体膜固定方法的摆位精度分析
Author: Xingde LI ; Jin ZHAO ; Mingyun ZHANG ; Fushan ZHAI ; Yue ZHAO ; Zhongcheng ZHU
Publication Type:Journal Article
Keywords: Set-up error; Body membrane fixation methods; Thoracic neoplasms/radiotherapy
From: Chinese Journal of Radiation Oncology 2013;22(5):397-399
CountryChina
Language:Chinese
Abstract: Objective To study the set-up accuracy in radiotherapy of thoracic neoplasms by improving the body immobilization method.Methods Fifty patients with thoracic neoplasms were randomly divided into conventional group (without electrode paste) and improved group (with electrode paste).Using simulator for position calibration and center field digital image reconstruction from treatment planning system.Then compare the set-up accuracy of two groups with different body methods by grouped t-test.Results Set-up error in the left-right,superior-inferior,anterior-posterior direction were 2.5 ± 1.5 and 2.4 ± 1.4(P =0.010),4.4 ± 2.0 and 2.2 ± 1.2 (P =0.000),2.2 ± 1.3 and 2.1 ± 1.0 (P =0.100) in conventional group and improved group,respectively.Conclusions The improved body immobilization method improves setup accuracy in radiotherapy for thoracic neoplasms which also will be effective for clinical treatment.