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目的:颈动脉三角区肿瘤的准确诊断及明确肿瘤与颈动脉的关系具有重要的临床意义,本研究探索多层螺旋CT血管造影(multi-slice spiral computed tomography angiography,MSCTA)后处理技术对颈动脉体瘤及颈动脉三角区神经鞘瘤的诊断价值以及明确肿瘤与颈动脉关系的价值。方法:分析收治的19例颈动脉三角区神经鞘瘤和4例颈动脉体瘤的MSCTA影像学资料,结合多平面重建(MPR)、最大密度投影(MIP)、容积再现(VR)等图像后处理技术分析其影像学特征。结果:128层螺旋CT血管造影均能提供高分辨率、立体直观的影像学资料,准确显示肿瘤实质情况及其与颈动脉的位置关系。MPR能提供神经鞘瘤瘤体精确的影像,但与血管的关系显示较差;MIP和VR则能直观地显示颈动脉影像及其移位情况。MPR和MIP能从不同观察面显示颈动脉体瘤的实质情况,同时显示血管与肿瘤的关系;VR是颈动脉体瘤最佳的成像方式,能提供精确的瘤体与动脉的关系,如瘤体包膜与血管外膜的关系等。联合应用MPR、MIP和VR技术,能提供敏感精确的影像。结论:MSCTA后处理技术能为神经鞘瘤及颈动脉体瘤提供高质量的诊断信息,有效鉴别肿瘤;同时其能显示肿瘤与颈动脉的三维关系,提高手术的安全性。
OBJECTIVE: The accurate diagnosis of carotid triangle tumor and the clear relationship between tumor and carotid artery have important clinical significance. This study explored the effect of multi-slice spiral computed tomography angiography (MSCTA) post-treatment on carotid artery Diagnostic Value of Tumor and Carotid Triangle Schwannoma and Their Relationship with Carotid Artery. Methods: MSCTA images of 19 schwannoma of the carotid triangle and 4 carotid body tumors of the carotid arteries were analyzed. Combined with multiplanar reconstruction (MPR), maximum density projection (MIP) and volume rendering (VR) images, Processing technology analysis of its imaging features. Results: 128-slice spiral CT angiography can provide high-resolution, three-dimensional visual imaging data accurately show the tumor and its relationship with the location of the carotid artery. MPR can provide accurate images of schwannoma tumor, but the relationship with the blood vessels showed poor; MIP and VR can visually show the carotid artery imaging and its displacement. MPR and MIP can show the real situation of carotid body tumor from different observation planes and show the relationship between blood vessels and tumor. VR is the best imaging method of carotid body tumor and can provide accurate tumor-artery relationship such as tumor Body envelope and vascular adventitia and so on. Combined with MPR, MIP and VR technologies, it delivers sensitive and accurate images. Conclusion: The MSCTA post-processing technique can provide high-quality diagnostic information for Schwannoma and carotid body tumor and effectively identify the tumor. Meanwhile, it can display the three-dimensional relationship between tumor and carotid artery and improve the safety of surgery.