正电子发射断层成像装置质量控制检测时操作人员眼部受照剂量水平分析

Analysis on illuminated dose level of operators＇ eyes in imaging quality control test of positron emission tomography

的 探讨正电子发射断层成像装置（PET）质量控制检测时,检测操作人员眼晶状体受照剂量.方法 对山东省5台PET质量控制检测时,在分装前、制作点源、制作线源1和制作线源2时分别在2名检测操作人员的左眼部左侧、左眼部前方,左右眼中间、右眼部前方、右眼部右侧各佩戴1个热释光眼晶状体个人剂量计.对检测操作人员眼晶状体受照辐射剂量进行测量和分析,计算其最大年受照剂量.结果 检测5台PET,检测时操作人员的眼晶状体最大剂量是2 439.80 μSv,第一和第二检测操作人员左右眼晶状体剂量呈现相同趋势（x2=15.629 ～ 16.155,P＜0.05）,第一检测操作人员眼晶状体受照剂量高于第二检测操作人员（Z=2.611,P＜0.05）.结论 单台PET检测所致检测操作人员眼晶状体受照剂量处于较低水平.

Objective To investigate the eye lens dose to the operators who tended to test the quality control of positron emission tomography （PET）.Methods Before encapsulation and in preparation of point source,line source 1 and line source 2,the two operators were worn with lens thermoluminescence dosimeter each at the left of the left eye,the front of the left eye,between the right eye and the left eye,the left of the right eye,and the front of the right eye.Measurement and analysis were made of the radiation doses to eye lens received by the operators in order to calculate their maximum annual doses.Results The maximum lens dose was 2 439.80 μSv for the test of 5 PETs.There appears to be the same trend in the eye lens doses for the first and second operators.（x2 =15.629-16.155,P 〈 0.05）.The first operator have received higher eye lens dose higher than the second（Z =2.611,P 〈 0.05）.Conclusions The dose to the eye lens for a single PET test is relatively low.