320排CT Surt-start成像与动态容积扫描对肝移植术后肝动脉并发症的评价  

Evaluation studies of hepatic artery complications after liver transplantation with 320-detector row computed tomography scanner for Surt-start imaging and dynamic volume scanning

作　　者：颜荣华[1] 谢斯栋[1] 王劲[1] 单鸿[1] 刘静静[1] 梁莹莹[1] 

机构地区：[1]中山大学附属第三医院放射科,广州510630

出　　处：《中华医学杂志》2014年第43期3374-3377,共4页National Medical Journal of China

基　　金：国家自然科学基金（81271562）;国家自然科学基金青年基金（81101097）;教育部高校博士点基金新教师类（20110171120084）

摘　　要：目的 比较320排CT Surt-start成像和动态容积扫描对肝移植术后肝动脉并发症的临床应用价值.方法 回顾性分析2009年4月至2011年9月中山大学器官移植中心20例肝移植病例,320排螺旋CT对肝移植术后20例患者先后行两组CTA检查,动态容积组采用动态容积扫描模式,Surt-start组采用螺旋扫描.对比剂碘普罗胺（370 mgL/ml）,流速6 ml/s,动态容积组剂量为50 ml,Surt-start组剂量为1.5 ml/kg.比较两组肝动脉强化峰值时间、最佳动脉期时间、强化峰值、强化绝对峰值及肝动脉分支显示情况.结果 动态容积组肝动脉的强化峰值时间、最佳动脉期时间分别为（21.5±2.5）、（22.4±3.3）s,Surt-start组为（19.5±1.8）s,两组间差异有统计学意义（P=0.001、P=0.000）;两组强化峰值、强化绝对峰值及肝动脉分支级数差异均无统计学意义（P值分别为0.884、0.934、0.569）.动态容积组显示肝动脉细微病变优于Surt-start组.结论 320排CT动态容积扫描具有对比剂剂量低、图像质量高的优点,可作为肝移植术后肝动脉并发症随访的有效手段.Objective To evaluate the clinical application comparison of Surt-start imaging and dynamic volume scanning acquired from 320-detector row computed tomography （CT） for the diagnosis of hepatic artery complications after liver transplantation.Methods Retrospective analysis was conducted for 20 patients undergoing 320-slice CT scanning.Aquilion One scanner after liver transplantation was performed from April 2009 to September 2011.Dynamic volume scanning group employed dynamic volume scanning pattern while Surt-start group used helical scanning pattern.The contrast medium （Ultravist,370 mgI/ml iopromide） was infused at 6 ml/s with a total dose of 50 ml in dynamic volume scanning group versus 1.5 ml/kg in Surt-start group.Two groups were compared with regards to hepatic artery enhancing peak time,the best arterial phase time,maximum peak enhancement of artery,maximum absolute peak enhancement of artery and branches of hepatic artery.Results The hepatic artery enhancing peak time and the best arterial phase time was （21.5 ± 2.5） s and （22.4 ± 3.3） s in dynamic volume scanning group versus （19.5 ± 1.8） s in Surt-start group.And there was significant inter-group difference（P =0.001,P =0.000）.The maximum peak enhancement of artery or the maximum absolute peak enhancement of artery and branches of hepatic artery had no inter-group difference.Two groups showed no difference in displaying hepatic artery anastomosis and variations.Dynamic volume scanning group was better than Surt-start group in displaying hepatic artery microscopic lesions.Conclusion 320-detector CT dynamic volume scanning has the advantage of low-dose contrast medium.Capable of acquiring overall accurate imaging process of hepatic artery,it is effective for follow-ups of hepatic artery complications after liver transplantation.

关 键 词：体层摄影术 X线计算机 肝移植 肝动脉 

分 类 号：R657.3[医药卫生—外科学]