模拟定位机焦点一致性的质量保证研究OACSTPCD
Assessment of QA in Consistency of Simulator Focus
目的:研究利用模拟定位机的“井”型界定线测算焦点偏差的可能性.方法:通过光野辐射野一致性测量方法及“井”型界定线测量方法,分别测得有效焦点与模拟焦点一致性的偏差值,并对2组数值进行对比分析.结果:对25次测量结果进行配对样本的t检验,t=-0.237,P=0.815,差异无统计学意义.结论:测试用模拟定位机的焦点偏差符合质量保证要求,且可以利用“井”型界定线验证有效焦点与模拟焦点的一致性.
Objective To explore the possibility of measuring the focus deviation by the "well"-type definition lines of the simulator. Methods According to the deviation of the collimator and the "well"-type definition lines in the radiation field and the projection field of light respectively, the effective focus and simulated focus were calculated by the geometry relationship, and then we compared the results from the two methods above. Results Measurement results of…查看全部>>
刘海;李金凯;赵锐;曾波
210002南京 解放军81医院全军肿瘤中心210002南京 解放军81医院全军肿瘤中心210002南京 解放军81医院全军肿瘤中心210002南京 解放军81医院全军肿瘤中心
机械制造
模拟定位机质量保证焦点“井”型界定线
simulator quality assurance focus "well"-type definition lines
《医疗卫生装备》 2011 (10)
125-126,2
评论