| 钟唐力,张小明,赵建农,曾南林,蹇素,舒健.肠系膜下静脉:三维动态增强磁共振血管成像研究[J].中国医学影像技术,2007,23(4):570~574 |
| 肠系膜下静脉:三维动态增强磁共振血管成像研究 |
| Three-dimensional dynamic contrast-enhanced MR angiography of inferior mesentery vein |
| 投稿时间：2006-08-20 修订日期：2007-03-29 |
| DOI： |
| 中文关键词: 肠系膜下静脉 动态增强 磁共振血管成像 |
| 英文关键词:Inferior mesenteric vein Dynamic contrast-enhanced Magnetic resonance angiography |
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| 中文摘要: |
| 目的 研究肠系膜下静脉(IMV)在3D动态增强MRA(DCE MRA)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。方法 217例行腹部增强MRI扫描的连续性病例。静脉注射Gd-DTPA,冠状面 3D FSPGR 动态增强。在工作站作图像后处理,用多平面容积重建(MPVR)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24例,无肝疾病及相关疾病患者30例(正常组),测量IMV的直径,并进行比较。结果 217例中191例(88%)显示IMV主干,53例(24%)显示一级分支,20例(9%)显示二级分支。显示IMV主干的191例中,IMV汇入脾静脉占45%,汇入门静脉汇合处占18%, 汇入肠系膜上静脉占37%。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),但IMV直径差别无统计学意义(P>0.05)。结论 3D DCE MRA可较好地显示IMV及其分支,大部分IMV汇入脾静脉,肝硬化患者IMV不受累。 |
| 英文摘要: |
| Objective To evaluate the visibility of inferior mesenteric vein (IMV) on three dimension (3D) dynamic contrast-enhanced (DCE) MR angiography (MRA), the fashion of IMV inserting into the portal system and the difference of IMV in diameters between normal subjects and patients with cirrhosis. Methods Two hundreds and seventeen consecutive patients performed abdominal enhanced MRI were included in this study. Gd-DTPA was injected intravenously and coronal 3D FSPGR was performed. The original data was transferred to workstation. IMV was reconstructed by multiple planar volume reconstruction (MPVR). The visualization of the reconstructed vessels was noted, so did the fashion of IMV inserting into the portal system. The diameter of IMV was measured in twenty four patients with cirrhosis (Group cirrhosis) and in thirty patients without hepatic lesions and related lesions (Group normal), and was compared between two groups. Results In the two hundreds and seventeen patients the frequencies of visualization in IMV, grade 1 branches and grade 2 branches were 88%, 24% and 9% respectively. The IMV inserted into the splenic vein (SV), the portal confluence and the superior mesenteric vein (SMV) were seen in 45%, 18% and 37%, 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 3D DCE MRA. Most IMV were drained into SV. IMV was not involved in patients with cirrhosis. |
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