多层螺旋CT肝动脉成像技术研究  

Study on Multi-Spiral CT Angiography in Heptic Arteries

作　　者：欧阳爱梅[1] 苏新友[1] 贾姝丽[1] 魏兆龙[1] 李淑静[1] 马祥兴[2] 

机构地区：[1]济南市中心医院放射科,山东济南250013 [2]山东大学齐鲁医院放射科,山东济南250012

出　　处：《中国辐射卫生》2013年第3期260-262,共3页Chinese Journal of Radiological Health

基　　金：济南市卫生局基金项目(2007-13)

摘　　要：目的探讨固定延迟时间肝动脉螺旋CT血管成像(MSCTA)的可能性,优选其最佳成像方法及16层螺旋CT肝动脉CTA最佳延迟时间。方法选取上腹部强化患者380例,按照不同延迟时间(20 s、25 s、30 s)、注射流率(3.0 ml/s、3.5 ml/s)、重建层厚(0.75 mm、2 mm)和扫描方法(固定延迟时间与自动触发技术)随机分为6组,分析肝动脉显示情况。结果 16层螺旋CT肝动脉MSCTA最佳延迟时间25 s。0.75 mm和2 mm重建层厚之间差异有统计学意义。3.0 ml/s组与3.5 ml/s组以及固定延迟时间与自动触发技术肝动脉显示程度差异无统计学意义。结论固定延迟时间肝动脉MSCTA适合临床应用。Objective To investgate the possibility of fixed delay time multi - spiral CT imaging hepatic arteries （MSCTA） ;To optimize the best imaging method and the delay time on 16 - slice MSCTA in hepatic arteries. Methods 380 patients who underwent multiphase enhanced liver scan were divided into 6 groups randomly. All groups completed by 16 - slice CT according to different delay time （ 20 s, 25 s,30 s） , injection flow rate （3.0 ml/s, 3.5 ml/s） , reconstruction layer thickness （0.75 mm, 2 mm） and scanning methods （fixed delay time and automatic trigger technology）. Display effect on he- patic arteries were analyzed. Results The best delay time of hepatic arteries in 16 - slice CT was 25 s respectively. Differ- ences between 0.75 mm and 2 mm thick layer of reconstruction were statistically significant. There were no difference between 3.0 ml/s group and 3.5 ml/s group, so it was between fixed delay time and automatic trigger. Conclusion Fixed delay time MSCTA in hepatic arteries was applicable for clinical use.

关 键 词：多层螺旋CT CT血管成像 肝动脉 成像技术 

分 类 号：R814.43[医药卫生—影像医学与核医学]