Ibukuro K, Tsukiyama T, Mori K, Inoue Y
Department of Radiology, Mitsui Memorial Hospital, Tokyo, Japan.
AJR Am J Roentgenol. 1996 Oct;167(4):1003-8. doi: 10.2214/ajr.167.4.8819401.
The purpose of this study was to evaluate thin-section helical CT for the frequency of visualization of the peripancreatic veins, the venous anatomy at the head of the pancreas, and variations of the venous anatomy.
We performed 30-sec helical CT of the pancreas with one breath-hold and a 3-mm scanning collimation in 50 patients. The scan was started 60 sec after injection of an i.v. contrast medium at the rate of 2 ml/sec (total amount of contrast medium, 100 ml). The axial scan data were reviewed for the following information: the frequency of CT visualization of the peripancreatic veins (anterior superior pancreaticoduodenal vein, first jejunal vein, gastrocolic trunk, inferior mesenteric vein, left gastric vein, middle colic vein, posterior superior pancreaticoduodenal vein, right colic vein, and right gastroepipolic vein) and the anatomic relationship between the large portal venous system (portal vein, superior mesenteric vein, and splenic vein) and its tributaries.
The frequency of visualization on CT of each vessel was gastrocolic trunk, 100%; right gastroepiploic vein, 100%; first jejunal vein, 96%; inferior mesenteric vein, 88%; left gastric vein, 80%; posterior superior pancreaticoduodenal vein, 72%; middle colic vein, 72%; right colic vein, 64%; and anterior superior pancreaticoduodenal vein, 50%. The anatomic relationship between the large portal venous system and its tributaries was as follows: The left gastric vein drained into the splenic vein-portal vein confluence (46%), into the splenic vein (32%), and into the portal vein (22%); the inferior mesenteric vein drained into the splenic vein (46%), the splenic vein-superior mesenteric vein confluence (25%), and the superior mesenteric vein (29%). The posterior superior pancreaticoduodenal vein drained into the portal vein above the splenic vein-portal vein confluence (mean distance, 0.3 cm). The middle colic vein, gastrocolic trunk, and first jejunal vein drained into the superior mesenteric vein below the splenic vein-portal vein confluence (mean distances of 2.4 cm, 3.0 cm, and 3.7 cm, respectively).
Thin-section helical CT scans provide good visualization of the peripancreatic veins.
本研究旨在评估薄层螺旋CT对胰周静脉的显示频率、胰腺头部的静脉解剖结构以及静脉解剖结构的变异情况。
我们对50例患者进行了屏气30秒、扫描准直为3毫米的胰腺螺旋CT检查。在以2毫升/秒的速率静脉注射造影剂（总量100毫升）后60秒开始扫描。对轴位扫描数据进行如下信息的回顾：胰周静脉（胰十二指肠上前静脉、空肠第一静脉、胃结肠干、肠系膜下静脉、胃左静脉、结肠中静脉、胰十二指肠上后静脉、结肠右静脉和胃网膜右静脉）的CT显示频率，以及大门静脉系统（门静脉、肠系膜上静脉和脾静脉）与其属支之间的解剖关系。
各血管的CT显示频率分别为：胃结肠干，100%；胃网膜右静脉，100%；空肠第一静脉，96%；肠系膜下静脉，88%；胃左静脉，80%；胰十二指肠上后静脉，72%；结肠中静脉，72%；结肠右静脉，64%；胰十二指肠上前静脉, 50%。大门静脉系统与其属支之间的解剖关系如下：胃左静脉汇入脾静脉-门静脉汇合处（46%）、脾静脉（32%）和门静脉（22%）；肠系膜下静脉汇入脾静脉（46%）、脾静脉-肠系膜上静脉汇合处（25%）和肠系膜上静脉（29%）。胰十二指肠上后静脉汇入脾静脉-门静脉汇合处上方的门静脉（平均距离0.3厘米）。结肠中静脉、胃结肠干和空肠第一静脉汇入脾静脉-门静脉汇合处下方的肠系膜上静脉（平均距离分别为2.4厘米、3.0厘米和3.7厘米）。
薄层螺旋CT扫描能很好地显示胰周静脉。
