MSCTA VR融合技术在支气管动脉成像中的应用价值

目的：探讨MSCTAVR融合技术显示支气管动脉（BA）的应用价值。方法：选择125例胸部增强CT扫描患者对动脉（含支气管动脉和主动脉）、气管、胸廓均采用AOS-VR技术分别重组VR像，然后进行图像融合，获得三维融合图像，观察支气管动脉的起源、走行及与相邻组织之间的解剖关系。结果：125例胸部增强CT扫描患者中117例支气管动脉显示清晰，共显示BA267支。右侧BA145支主要起源于右肋间动脉（68／145，46．9％）及降主动脉（65／145，44．8％）；左侧BA122支主要起源于降主动脉（119／122，97．5％）。267支中有153支发自降主动脉前壁，77支发自降主动脉右侧壁，9支发自降主动脉后壁，22支发自降主动脉左侧壁，3支发自右侧锁骨下动脉，1支发自左侧颈总动脉，1支发自右侧甲状颈干，1支头臂干。起源于降主动脉的右BA以右壁最多（69／145，47．6％），其次是前壁（63／145，43．4％）；起源于降主动脉的左BA以前壁最多（98／122，80．3％）。结论：VR融合技术能清晰、直观地显示支气管动脉的起源、形态、走行及与相邻组织结构的关系，对胸部手术或介入治疗术前评估有重要的临床应用价值。

Multi-slice CT Angiography Integrated with Volume Rendering Technique in the Demonstration of Bronchial Arteries

Objective:To explore the value of multi-slice CT angiography(MSCTA) integrated with volume rendering(VR) technique in the demonstration of bronchial arteries.Methods:One hundred and twenty-five cases having enhanced MSCTA,whose arteries including bronchial arteries and aorta,bronchus and thoracic wall were respectively reconstructed by AOS VR technique,then merged into three-dimensional images.The origin,course of bronchial arteries and their relationship with the adjacent anatomic structure were studied.Re...