| 孔凡彬,单树崇.16层螺旋CT评价门静脉主干及右叶分支变异[J].中国医学影像技术,2008,24(7):1072~1075 |
| 16层螺旋CT评价门静脉主干及右叶分支变异 |
| Evaluation of main and right portal vein branching variations with 16-slice spiral CT |
| 投稿时间：2008-01-19 修订日期：2008-05-19 |
| DOI： |
| 中文关键词: 门静脉 血管造影术 体层摄影术,X线计算机 变异 |
| 英文关键词:Portal vein Angiography Tomography, X-ray computed Variation |
| 基金项目: |
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| 摘要点击次数: 3631 |
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| 中文摘要: |
| 目的 研究门静脉主干及右叶分支变异的发生率及类型。方法 本研究包括200例接受16层螺旋CT腹部增强检查的病例,两位医生观察其轴面图像,最大密度投影(MIP)和容积重建图像(VR),分析门静脉主干及右叶分支的类型。结果 64.5%(131例)病人门静脉主干解剖正常,9.5％(19例)病人门静脉主干分支成三叉,即门静脉左支、门静脉右前支、门静脉右后支,23.5％(47例)病人门静脉主干分成一个门静脉右后支和一个共干,后者发出门静脉左支和门静脉右前支。3例病人有多种变异。131例门静脉主干解剖正常病人中,22例病人(16.8％)右叶分支变异,最多变异是分成三叉,其次是第Ⅶ段门静脉起源于右侧主干近端。结论 门静脉主干变异很常见,门静脉右前支和门静脉左支共干比三分叉型更常见,右叶分支变异也存在但少见。 |
| 英文摘要: |
| Objective To investigate the prevalence of variant main and right portal vein ramification in a large group of patients. Methods The study group consisted of 200 patients who underwent consecutive contrast-enhanced abdominal CT examinations performed with 16-MDCT scanner. Two observers evaluated both thin axial sections and 3D maximum-intensity-projection and volume-rendered images for branching patterns of the main and right portal veins. Results Conventional main portal vein anatomy was present in 64.5% of the patients. In 9.5% of the patients, the main portal vein trifurcated into the left portal, right anterior and posterior portal veins. In 23.5% of the patients, the main portal vein divided into a common left portal vein-right anterior portal vein trunk and the right posterior portal vein. Three patients (1.5%) had miscellaneous variations. Twenty-two (16.8%) of 131 patients with conventional main portal vein branching had variant right portal vein branching, most of which was a trifurcation, followed by an abnormally proximal origin of the segment Ⅶ vein from the right portal vein. Conclusion Variant main portal vein branching seems to be very frequent. Common right anterior portal vein-left portal vein trunk is far more common than trifurcation. Although less frequent, variations also occur in right portal vein branching. |
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