CAJ | 학술논문

目的：研究探讨在胸部CT扫描中BMI值与辐射剂量的相关性。方法采取2012年11月至2013年5月期间在我院接受胸部CT检查的600例患者，随机取300例组成研究组，300例组成对照组。研究组根据每位患者的人体体重指数设计个性化的扫描参数，对照组则采用机型设备所设定的胸部扫描Auto mA功能；分别得到两组图像和有效剂量，由两位经验丰富的主治医师采用双盲法评价两组图像的质量。同时，对得到的两组有效剂量进行统计学分析评价。结果研究组和对照组相比较，图像质量(尤其是肺窗显示质量)无显著差别；而研究组的有效剂量值明显低于对照组，具有统计学意义(P＜0.05)。结论利用体重指数设定个性化扫描模式是目前最合理且有效地保证成像质量和降低辐射剂量的方法。
목적：연구탐토재흉부CT소묘중BMI치여복사제량적상관성。방법채취2012년11월지2013년5월기간재아원접수흉부CT검사적600례환자，수궤취300례조성연구조，300례조성대조조。연구조근거매위환자적인체체중지수설계개성화적소묘삼수，대조조칙채용궤형설비소설정적흉부소묘Auto mA공능；분별득도량조도상화유효제량，유량위경험봉부적주치의사채용쌍맹법평개량조도상적질량。동시，대득도적량조유효제량진행통계학분석평개。결과연구조화대조조상비교，도상질량(우기시폐창현시질량)무현저차별；이연구조적유효제량치명현저우대조조，구유통계학의의(P＜0.05)。결론이용체중지수설정개성화소묘모식시목전최합리차유효지보증성상질량화강저복사제량적방법。
Objective To explore the correlation between body mass index and radiation dose in chest computed tomography scanning. Methods Choose 600 people who received chest CT scanning which comes to our hospital from August 2012 to May 2013. The cases were randomly divided into experiment group (300 cases) and control group (300 cases). The study group set special scan parameters according to patients' body mass index, while the contrast group use chest CT scan Auto mA. Two groups of images and effective dose were acquired. Images' qualities were evaluated by two senior radiologists in a double blind method, at the same time the obtained effective dose were analyzed statistically. Results Compared the two groups, the image quality showed no significant difference, especially in lung window, While the study group's effective doses were apparently lower than contrast group, which showed statistical signification (P<0.05). Conclusion To set a personalized scanning parameters by using body mass index is the most reasonable and effective method to ensure both image quality and lower radiation dose.