腹主动脉增强CT值与胰腺动脉显示的相关性研究  

Correlation between enhanced CT value at abdominal aorta and visualization of pancreatic arteries

作　　者：仇益 程波 王成 张万军[2] QIU Yi;CHENG Bo;WANG Cheng;ZHANG Wanjun(Imaging Department,The Affiliated Suzhou Science&Technology Town Hospital of Nanjing Medical University,Suzhou 215000,China)

机构地区：[1]南京医科大学附属苏州科技城医院影像科,江苏苏州215000 [2]苏州大学附属第二医院影像科,江苏苏州215000

出　　处：《皖南医学院学报》2021年第3期264-267,共4页Journal of Wannan Medical College

基　　金：苏州市“科教兴卫”青年科技项目(KJXW2017017)。

摘　　要：目的:研究256层螺旋CT腹主动脉动脉期CT值与胰腺供血动脉显示的相关性。方法:根据腹主动脉动脉期CT值的差异,将苏州科技城医院152例行腹部增强CT检查的患者分为3组,A组61例(250~349 Hu)、B组49例(350~449 Hu)和C组42例(≥450 Hu)。利用最大密度投影(MIP)、容积重现技术(VR)、多平面重组(MPR)等技术显示胰腺动脉。结果:B、C组胰腺动脉整体显示率,胰十二指肠前下动脉(AIPDA)、胰十二指肠后下动脉(PIPDA)、胰背动脉(DPA)、胰横动脉(TPA)、胰大动脉(PMA)、胰尾动脉(CPA)显示率,各支胰腺动脉显示评分均高于A组(P<0.01),B、C组间差异无统计学意义(P>0.05)。胰十二指肠前上动脉(ASPDA)、胰十二指肠后上动脉(PSPDA)3组间差异无统计学意义(P>0.05)。利用ROC曲线分析,提示腹主动脉强化CT值与除ASPDA、PSPDA外其6支动脉的显示具有相关性(P<0.05),最佳诊断分界点中位数为345.5 Hu。结论:当腹主动脉增强CT值≥350 Hu时,胰腺各动脉均可获得较好的显示。Objective:To investigate the correlation between the value of 256-detector spiral CT at abdominal artery phase and visualization of pancreatic arteries.Methods:152 patients undergoing enhanced CT scanning at abdomen were divided into group A(250-349 Hu),group B(350-449 Hu)and group C(≥450 Hu)according to different enhancement of CT value at the abdominal aorta.The pancreatic arteries were reformatted using maximum intensity projection(MIP),volume rendering(VR)and multi-planar reconstruction(MPR).Results:The total visualization ratio of pancreatic arteries,the visualization ratio of anterior superior pancreaticoduodenal artery(AIPDA),posterior inferior pancreaticoduodenal artery(PIPDA),dorsal pancreatic artery(DPA),transverse pancreatic artery(TPA),magnificent pancreatic artery(PMA)and caudal pancreatic artery(CPA),the visualization scoring on each pancreatic artery were higher in group B and C than in group A(P<0.01),and the difference was unconspicuous between group B and C(P>0.05).The difference was also insignificant among the three groups regarding visualized ASPDA and PSDPA(P>0.05).ROC curve analysis showed that visualization of the 6 arteries except ASPDA and PSPDA was associated with CT value of abdominal aorta(P<0.05),with median cutoff point being 345.5 Hu.Conclusion:Pancreatic arteries can be optimally reformatted at enhanced CT value of abdominal aorta being≥350 Hu.

关 键 词：胰腺动脉 体层摄影术 X线计算机 血管造影 

分 类 号：R576[医药卫生—消化系统] R445.3[医药卫生—内科学]