【摘要】 目的探讨多层螺旋CT(MVCT)三维成像在研究猪肾动脉和集合系统解剖关系中的可行性。方法使用MVCT扫描机对81例猪肾行螺旋CT扫描,采用多平面重建(MPR)、最大密度投影(MIP)和容积再现技术(VR)进行猪肾动脉和集合系统的三维成像,以观察肾动脉和集合系统的解剖关系。结果全部81例猪肾标本均能显示肾动脉和集合系统的解剖关系。每个猪肾均只有一条动脉,肾动脉的一级分支有2支型和3支型两种,其中2支型占97.53%(79例),3支型占2.47%(2例);2支型中91.14%(72例)分为上极支和下极支,8.86%(7例)主分支为背侧支和腹侧支;所有标本中这2条动脉(背侧支和腹侧支)均供应肾上盏群;肾脏背侧中央区由1条起源于上极支的背侧动脉供应的占48.15%;供应肾脏腹侧中央区的动脉由水平分布在肾盂腹侧表面的分支血管组成的占82.72%;肾动脉下极支供应肾下盏群腹侧和背侧表面的占85.19%,而14.81%的背侧表面由来源于上极支的背侧动脉供应。结论MVCT三维成像可以作为研究猪肾动脉和集合系统解剖关系的有效方法。更多还原

【Abstract】 Objective To evaluate the feasibility of three-dimensional reconstruction of multi-slice CT in the anatomical relationships between intrarenal arteries and the kidney collecting system in pigs.Methods Eighty- one pig kidneys were examined with MVCT. Each kidney was evaluated with threedimensional reconstruction, from which MPR, MIP,VR of the renal artery and collecting system were documented. The anatomical relationships between intrarenal arteries and the kidney collecting system were observed. Results Three- dimensional images of all pig kidney could exactly show the anatomical relationships between the kidney arteries and collecting system. It was found that there was only 1 artery per kidney. The primary branch of this artery divided into two branches in 79 cases(97.53%) and three branches in 2 cases(2.47%). The two-branch artery divided into cranial and caudal branches in 72 cases(91.14%). In 7cases(8.86%) the primary division of the two-branch artery was in a dorsal and ventral branches. In all cases 2arteries(1 ventral and 1 dorsal) involved the cranial caliceal group. In the dorsal mid zone a dorsal artery originated from the cranial division of the renal artery, which was positioned in 48.15% of cases. The arterial supply related to the ventral mid zone of the kidney consisted of branches that coursed horizontally in the ventral surface of the renal pelvis in 82.72% of cases. The caudal division of the renal artery supplied the ventral and dorsal surfaces of the caudal caliceal group in 85.19% of cases, while in 14.81% a dorsal artery supplied its dorsal surface. Conclusion Three- dimensional reconstruction of multi- slice CT was an effective method in studying the anatomical relationships between the intrarenal arteries and kidney collecting system in pigs.更多还原