摘要
目的 :探讨国人肝动脉的解剖变异分型及多层螺旋CT血管造影 (MSCTA )显示肝动脉解剖的诊断符合率。方法 :分析 160例国人肝动脉的CT血管造影 ,并与DSA( 2 4例 )或手术 ( 12例 )结果进行对照 ,所有病例均在MX 80 0 0型 4层螺旋CT机上进行。动脉期层厚为 3 .2mm ,重建间隔为 1.6mm ,螺距为 1.2 5 ,延迟时间 2 5s ,对比剂用量以 1.5ml/kg计算。评价 160例CT血管造影中肝动脉的显示分支的级别以及起源部位 ,并根据Michels分型进行分类。结果 :正常肝动脉解剖占 67.5 %,肝动脉解剖变异占 3 2 .5 %。 3 6例有DSA或手术结果者 ,MSCTA显示肝动脉解剖的诊断符合率为97.2 %。结论 :CT血管造影在显示肝动脉解剖及变异方面具有较高的符合率 ,有望应用于介入、手术以及肝移植术前的评价。
Objective:To discuss the types of anatomical variations of hepatic artery and the accuracy of MSCTA compared with DSA (n=24) or operative (n=12) findings.Methods:All cases were performed on a 4 slices MSCT scanner,and 3.2mm slice thickness,1.6mm overlapping interval,1.25 pitch were used to acquire raw data at 25s after the initiation of the injection of contrast media according to 1.5ml/kg body weight.The degree of branches and origination of hepatic artery displayed on CT angiography were assessed,and were classified with Michels′ classification.36 cases were compared with DSA (n=24) or operation (n=12) results.Results:Normal hepatic artery accounted for 67.5%,while variations did 32.5%. Compared with 36 cases performed DSA or operation,the accuracy of CTA displaying anatomy and variations of hepatic artery was 97.2%.Conclusion:CTA has a high accuracy for displaying anatomy and variations of hepatic artery,and may be valuable to use in evaluation of interventional and surgical operations and liver transplantation.
出处
《放射学实践》
2004年第6期401-404,共4页
Radiologic Practice
