摘要
目的：运用MSCTA研究活体肠系膜上动脉（superiormesenterieartery，SMA）的正常解剖。方法：收集行腹部CT增强扫描的患者中sMA正常者140例。采用MPR、VR、MIP，观察分析sMA空间解剖结构，包括其走行、分布；测量sMA与腹主动脉（abdominalaorta，AA）夹角，左。肾静脉（1eftrenalvein，LRV）与十二指肠水平部平面的SMA与AA间距，LRV穿越SMA与AA之间的管径及LRV在左肾门的最大管径。结果：SMA起始段走行呈转折型（A型）80例，径直型（B型）60例；SMA与AA夹角为56．6°±24．1°；LRV水平SMA与AA的距离为（13．51±6．48）mm；十二指肠水平部平面SMA与AA间距为（13．09±6．17）mm；LRV穿越SMA与AA之间的管径为（5．60±1．91）mm；LRV在左侧。肾门最大管径为（9．97±1．47）mm；SMA与AA之间的夹角、间距均与sMA走行有关（P〈0．05），与性别年龄无关（PT〉0．05）；LRV穿越SMA与AA之间的管径，与SMA、AA之间的夹角有关（P〈0．05），而LRV在左肾门的最大管径与SMA走行无关（P〉O．05）。SMA分支较多，平均12支，大部分在11～15支之间。结论：MSCTA是一种分辨力高、准确、快速、无创性的血管成像方法，多种后处理成像能清晰显示活体sMA的正常解剖结构。
Objective： To investigate the normal anatomy structure of superior mesenteric arteries （SMA） by MSCTA. Meth- ods： 140 patients with no associated disease involved SMA were examined by MPR, VP and MIP to observe and analyze the di- mensional anatomy structure of SMA,including the direction and distribution;and measure the angle between SMA and abdomi- nal aorta （AA）, the distance between SMA and AA in the plane of left renal vein （LRV） and duodenum horizontal part （DHP）, the diameter of LRV going across SMA and AA,and the maximum diameter of LRV in the left kidney portal. Results： The pathway of origin segment of SMA presenting turn （A type） was 80 cases,and presenting striate （B type） was 60 cases;the angle between SMA and AA was （56.6°±24. 1°） ;the distances between SMA and AA in plane of LRV were （13.51±6. 48）mm; the diameters of LRV going across SMA and AA were （5.60±1.91）mm;the maximum diameters of LRV in the left kidney portal were （9.97±1.47）mm;the average distances between SMA and AA in plane of DHP were （13. 09±6. 17）ram. The angel and dis- tance between SMA and AA was related to the pathway of SMA （P〈0. 05） ,but not related to sex or age （P〉0. 05）. The diame- ter of LRV going across SMA and AA was related to the angle between them,but the maximum diameters of LRV in the left kid- ney portal was not related to the pathway of SMA （P〉0. 05）. SMA had many branches,the number of which varies from 11 to 15 ,and the average was 12. Conelusion：MSCTA is a high resolution,accurate,fastspeed and noninvasive angiography method,and its various postprocessing methods can clearly demonstrate the normal three dimensional anatomy structure of SMA.
出处
《中国中西医结合影像学杂志》
2013年第5期487-490,共4页
Chinese Imaging Journal of Integrated Traditional and Western Medicine
