摘要
目的:研究肠系膜下静脉(IMV)在16层螺旋CT血管成像的显示及其汇入门静脉系统的方式,并探讨正常人与肝硬化患者IMV的变化情况。材料和方法:腹部增强CT扫描221例连续病例,全部用16层螺旋CT做三期增强扫描。运用容积重建显示IMV,观察IMV的显示情况和汇入门静脉系统的方式。其中经临床证实的肝硬化患者22例,无肝疾病及相关疾病患者30例作为正常组,测量IMV的直径,并进行比较。结果:221例中207例(94%)显示IMV主干,159例(72%)显示一级分支,68例(31%)显示二级分支。显示IMV主干的207例中,IMV汇入脾静脉占12%,汇入门静脉汇合处占19%,汇入肠系膜上静脉占69%。在正常组和肝硬化组IMV直径差别无统计学意义(P>0.05);肝硬化组中门静脉主干、肠系膜上静脉和脾静脉直径明显大于正常组(P<0.05)。结论:多层螺旋CT血管成像可较好地显示IMV及其分支。多数IMV汇入肠系膜上静脉。肝硬化患者IMV不受累。
To evaluate the visibility of inferior mesenteric vein （IMV） on 16 - slice spiral CT angiography, the fashion of IMV inserting into the portal system and the difference of IMV in diameters between normal subjects and patients with cirrhosis. Materials and Methods： Two hundreds and twenty - one consecutive patients performed abdominal enhancement CT scan were included in this study. All patients were performed triple phases enhanced CT scan by using 16 - slice spiral CT. Volume rendering （VR） display were generated to evaluate the visibility of IMV. The fashion of IMV inserting into the portal system was also noted. The diameter of IMV was measured in twenty two patients with cirrhosis （Group cirrhosis） and in thirty patients without hepatic lesions and related lesions （Group normal）, and was compared between two group. Results： In the two hundreds and twenty -one patients the frequencies of visualization in IMV, grade 1 branches and grade 2 branches were 94%, 72% and 31%, respectively. The IMV inserted into the splenic vein （SV）, the portal confluence and the superior mesenteric vein （SMV） was seen in 12%, 19% and 69%, respectively. No significant difference can be seen for the diameter of IMV between Group cirrhosis and Group normal（P〉0.05）. While the diameter of the main portal vein （MPV） , SV and SMV in Group cirrhosis was significantly larger than that in Group normal （P 〈 0.05） .Conclusion： IMV and its branches can be well depicted by 16- slice spiral CT angiography. Most IMV were drained into SMV. IMV was not involved in patients with cirrhosis.
出处
《中国医学计算机成像杂志》
CSCD
2006年第2期105-108,共4页
Chinese Computed Medical Imaging
