泸州医学院学报Issue(2)：174-177,4.DOI:10.3969/j.issn.1000-2669.2015.02.015
鼻咽癌调强放疗中的摆位误差分析及其与患者体重指数的关系
Analysis of setup errors and its relationship with body mass index (BMI) in patients treated with intensity-modulated radiation therapy for Nasopharyngeal Carcinoma
石翔翔 1李佳 2庞皓文 1孙小杨1
作者信息
- 1. 泸州医学院附属医院院肿瘤科，四川泸州 64600
- 2. 泸州医学院附属医院教育培训部，四川泸州 64600
- 折叠
摘要
Abstract
Objective: To quantify the accuracy of patient positioning in intensity-modulated radiation therapy (IMRT) for nasopharyngeal carcinoma for formulating appropriate expansion from clinical target volume (CTV) to planning target volume(PTV), and assess the correlation between body mass index(BMI) and setup error. Methods: CT images of 20 patients treated with IMRT at our institution were examined,date in three directions (Right-Left, superior-Inferior, and Anterior-Posterior) were obtained and the setup error in patients treated with IMRT was calculated to venfy patient positioning Average of BMI was calculated and correlation between the setup error and BMI was analyzed. Results: The systematic error in the three directions was 2.1 mm, 2.4 mm and 3.0 mm, and the random error was 2.8 mm, 2.6 mm and 3.5 mm respectively. Condusion: The appropriate range of expansion from CTV to PTV is determined to make the IM-WPRT plan more scientific and rational. There was no correlation between the setup error and BMI.关键词
鼻咽癌/调强放疗/摆位误差/体重指数Key words
Nasopharyngeal Carcinoma/IMRT/Setup errors/BMI分类
临床医学引用本文复制引用
石翔翔,李佳,庞皓文,孙小杨..鼻咽癌调强放疗中的摆位误差分析及其与患者体重指数的关系[J].泸州医学院学报,2015,(2):174-177,4.
