下颌角手术相关颌后静脉走行的CTA研究

目的:应用CTA(血管造影术)影像测量颌后静脉与下颌角手术相关解剖,为避免手术中损伤颌后静脉提供指导。方法:选择30名正常成人下颌角及周围血管CTA扫描图像,应用ADW4.2图像处理软件测量颌后静脉距下颌角处颌骨各边缘的三维解剖位置。结果:颌后静脉距下颌角点的距离为(11.26±2.34)mm;在下颌角点上10 mm处距下颌骨后缘为(8.18±2.12)mm;在下颌角点上20 mm处距下颌骨后缘为(6.38±2.12)mm;在下颌角点上30 mm处距下颌骨后缘为(3.18±2.12)mm,在下颌角点上40 mm处距下颌骨后缘为(2.18±1.16)mm。结论:在下颌骨后缘手术时位置越高颌后静脉距下颌骨越近,手术越容易损伤颌后静脉;参照测量获得的解剖数据在下颌角成型手术中能避免损伤面前静脉及颌后静脉。

The measurement of position of retromandibular vein with multi-detector row helical CTA in relation to the mandibular angle plasty.

Objective:The aim of this study was to investigate the position and course of retromandibular vein using multi-detector row helical computed tomographic angiography(CTA)imaging and to relate the findings to performing the mandibular angle plasty.Method:thirty of adulty human were selected for multi-detector row helical CTA measurement and ADW4.2 software analysis.according with a distance from the retromandibular vein to mandibular angle,at 10 mm urper the mandibular angle,at 20 mm urper the mandibular angle,at 30 mm urper the mandibular angle,and at 40 mm urper the mandibular angle,retromandibular vein was examined.Result:the distance from the retromandibular vein to the mandibular angle is(11.26±2.34)mm,at 10 mm urper the mandibular angle is(8.18±2.12)mm,at 20 mm urper the mandibular angle is(6.38±2.12)mm,at 30 mm urper the mandibular angle is(3.18±2.12)mm,at 40 mm urper the mandibular angle is(2.18±1.16)mm.Conclusion:The study is to provide further understanding of the retromandibular vein anatomy in relation to the design of the mandibuler angle plasty and to create clinical safety guidelines in order to avoid damaging the facial vein and the retromandibular vein.