Nakayama Yusuke, Hayashi Shogo, Takeuchi Kyoko, Kawata Shinichi, Qu Ning, Itoh Masahiro
Department of Emergency and Critical Care Medicine, Yokohama City Minato Red Cross Hospital.
Department of Anatomy, Tokyo Medical University.
Okajimas Folia Anat Jpn. 2017;93(4):139-145. doi: 10.2535/ofaj.93.139.
To establish a method by which angiography of the inferior mesenteric artery (IMA) can be performed smoothly, we investigated the relative locations of the coeliac trunk (CT), superior mesenteric artery (SMA), IMA, and left renal artery (LtRA).
From a total of 60 cadavers, 32 cadavers with few arteriosclerotic lesions and little vascular tortuosity were selected for the study. The abdominal aorta (Ao) were removed and incised on both lateral side, along the vertical axis and transected into the ventral and dorsal sides. The intravascular lumen on the ventral side of the Ao was photographed using a digital camera, and the horizontal and vertical diameters of the sites of confluence of the CT, SMA, and IMA, were measured on the computer screen. We also calculated the distances between the branches, including the CT, SMA, IMA, LtRA, and the common iliac artery (CoI).
Although the SMA-IMA distance did not correlate with the CT-SMA distance, the ratio of the SMA-IMA to CT-CoI distance was four times greater than the ratio of the CT-SMA to CT-CoI distance.
The site of branching of the IMA can be inferred to some extent from the CT and SMA distance.
为建立一种能顺利进行肠系膜下动脉（IMA）血管造影的方法，我们研究了腹腔干（CT）、肠系膜上动脉（SMA）、IMA和左肾动脉（LtRA）的相对位置。
从60具尸体中，挑选出32具动脉硬化病变少且血管迂曲程度小的尸体用于研究。取出腹主动脉（Ao）并在其两侧沿垂直轴切开，将其横断为腹侧和背侧。使用数码相机拍摄Ao腹侧的血管内腔，并在电脑屏幕上测量CT、SMA和IMA汇合处的水平和垂直直径。我们还计算了各分支之间的距离，包括CT、SMA、IMA、LtRA和髂总动脉（CoI）。
虽然SMA-IMA距离与CT-SMA距离无关，但SMA-IMA与CT-CoI距离的比值是CT-SMA与CT-CoI距离比值的四倍。
可从CT和SMA距离在一定程度上推断IMA的分支部位。
