低剂量螺旋CT扫描体检筛查肺癌的研究  

Low-dosage he1ical CT applications for chest medical checkup and lung cancer screening

作　　者：汪萍[1] 崔法[1] 梁欢庆[1] 郑敏菲[1] 

机构地区：[1]东莞市太平人民医院影像科,广东523900

出　　处：《影像诊断与介入放射学》2005年第1期16-18,共3页Diagnostic Imaging & Interventional Radiology

摘　　要：目的讨论用低剂量螺旋CT对胸部体检筛查肺癌的应用研究。方法对100例胸部体检者采用3组不同扫描参数扫描,对常规剂量管电流230mAs,低剂量50mAs和30mAs扫描图像进行比较。结果在低剂量螺旋CT扫描时,扫描图像仍然清清晰,扫描信息完整。对100例胸部体检者,共检出结节或肿块39个,肿大淋巴结1例,肺大泡与肺气肿3个肺段,支气管壁增厚2例,局限性胸膜增厚1例。结论用低剂量(管电流300mAs螺旋CT扫描,即能保证图像质量,又具有较低的辐射剂量,适量胸部体检肺癌筛查工作。Objective A disussion on low- dosage helcal CT aoolications on chest medical checkup and lung cancer screening .Methods On the 100 chest medical check up with three different of protocols, including standard- dosage(the tube current was 230 mAs) were compared with low- dose (tube current was 50 mAs or 30 mAs).Results Low- dosage helical CT scan provides excellent images. In 100 chest medical checkup, 39 nodules or masses were revealed, enlarged lymph node was noted in 1 case; emphysema or bullae was demonstrated in 3 segments;thickening of bronchial wall was showm in 2 cases; and localized pleural thickening was found in 1 case.Conclusion In chest checkup or lung cancer screening low- dosage helical CT (tube current 30 mAs)will not only guarantee image quality but also reduce the radiation dose during the examination. [

关 键 词：体检 低剂量螺旋CT 胸部 肺癌 筛查 管电流 常规剂量 扫描体 扫描图像 图像质量 

分 类 号：R734.2[医药卫生—肿瘤] R814.42[医药卫生—临床医学]