摘要
目的探讨64排螺旋CT血管成像对肝动脉正常解剖和变异的显示及临床指导价值。资料与方法选择60例肝脏占位性病变患者行肝动脉64排螺旋CT血管成像,所有图像均以最小层厚0.67mm、间隔0.33mm重组传送到工作站。采用最大密度投影(MIP)和容积再现(VR)两种方法进行后处理,以Michels分型观察肝动脉的解剖与变异类型。结果正常肝动脉解剖共36例;肝动脉起源变异24例。其中属于Michels分型的有4种共17例,最多的是MichelsⅡ型7例,其次为Ⅲ型4例;Ⅴ型和Ⅸ型各3例。未被列入Michels分型的其他类型共7例(11.7%)。以DSA或手术为对照的26例中,CT血管成像对肝动脉解剖及变异的诊断符合率为100%。结论64排螺旋CT肝动脉血管成像能够准确地证实肝动脉解剖与变异,并能明确肿瘤血管异位侧支来源,为临床手术、介入治疗及肝移植等提供更多信息。
Objective To discuss the value of 64 row helical CT angiography in demonstrating the normal anatomy and anatomical variation of hepatic arteries. Materials and Methods 60 patients who had clinically been suspected hepatic neoplasms underwent CTA examination by 64 row helical CT. All the images derived from CTA were reconstructed with the minimum slice of 0.67 mm and the interval of 0.33 mm and transmitted into the Mxview workstation. Image postprocessing was taken with maximum intensity projection （MIP） and volume rendering （VR）. The type of variation was classified with Michels＇classification. Results Normal hepatic artery anatomy was found in 36 oft 60 cases （60%） , and variation presented in 24 cases （40%）. 4 type of variation （total 17 cases ,17/24） belonged to Michels, 7 cases amount to 11.7% of total variations were classified into Michels Ⅱ followed by 4 cases （6.7%） classified into Michels Ⅲ. 3 cases （ 5.0% ） were classified into Michels V and Ⅸ respectively. 7 cases（ 11.7% ） were not classified into Michels＇type in all cases. Resuhs of 26 cases were compared with that of DSA or operation, the accuracy of CTA displaying anatomy and variations of hepatic artery was 100%. Conclusion 64 row helical CT angiogrophy can accurately visualize the type of anatomical variation of hepatic artery, and can display clearly the artery for feeding tumor or the abnormality branch blood supply for primary hepatic carcinoma. Therefore, CTA can provide more important information for surgical intervention, interventional therapy and liver transplantation.
出处
《临床放射学杂志》
CSCD
北大核心
2007年第12期1276-1279,共4页
Journal of Clinical Radiology
