摘要
目的探讨64层螺旋CTA及融合技术对胃周静脉的显示能力和临床应用价值。方法对53例患者行腹部64层螺旋CT扫描。采用VR技术分别重建胃周静脉、动脉和胃,并将其融合,观察胃周静脉的汇入点、走行及其与胃周动脉、胃的空间关系。将26例接受手术治疗患者的术前CTA资料与术中所见进行对比,评价64层螺旋CTA显示胃周静脉的准确率、敏感度及特异度。结果胃网膜右静脉的显示率为100%(53/53),胃左静脉为90.57%(48/53),胃右静脉为73.58%(39/53)、胃后静脉为50.94%(27/53)、胃短静脉为94.34%(50/53)、胃网膜左静脉为92.45%(49/53)及胃结肠干为71.70%(38/53);术前CTA预测胃周静脉的准确率为92.31%～100%、敏感度为90.91%～100%,特异度为100%。结论 64层螺旋CTA可清晰显示胃周静脉,采用融合技术能将胃周静脉、胃周动脉及胃相融合,显示活体胃及胃周血管解剖空间结构。
Objective To evaluate the efficacy and clinical value of 64-slice spiral CTA with image fusion on the anatomy of perigastric veins.Methods Totally 53 patients underwent abdominal 64-slice spiral CT examination.CTA of perigastric veins,arteries and stomach were reconstructed,and the images were fused with VR technique.The inflow and courses of perigastric veins were observed,as well as the spatial relationship among the perigastric veins,arteries and stomach on CTA.Moreover,the accuracy,sensitivity and specificity of preoperative CTA were detected with surgical findings as standard in 26 patients who underwent gastrectomy.Results In 53 patients,the display rate of the right gastroepiploic vein was 100%（53/53）,90.57%（48/53） of the left gastric vein,73.58%（39/53） of the right gastric vein,50.94%（27/53） of the posterior gastric vein,94.34%（50/53） of the short gastric vein,92.45%（49/53） of the left gastroepiploic vein,and 71.70%（38/53） of the gastrocolic trunk.The accuracy of preoperative CTA correctly identifying perigastric veins was 92.31%—100%,the sensitivity was 90.91%—100%,and the specificity was 100%.Conclusion 64-slice spiral CTA can clearly display perigastric veins and show the relationship among the stomach and perigastric arteries in the living body with the fused image.
出处
《中国医学影像技术》
CSCD
北大核心
2012年第6期1208-1212,共5页
Chinese Journal of Medical Imaging Technology
基金
广东省科技计划项目(2010B031600080)
