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目的探讨CT、MRI、DSA检查在颈动脉体瘤诊断中的价值。方法病理证实的10例颈动脉体瘤,其中4例行MRIT1WI、T2WI及对比增强MRA,6例行CT平扫加增强扫描,10例均行DSA和TBO试验。结果10例术前CT、MRI、DSA均诊断为颈动脉体瘤,与临床及病理诊断符合率为100%。10例病变均位于颈动脉分叉处。CT平扫主要表现为均匀性低密度球形病灶,CT值25～37Hu。MRI的特征为T1WI、T2WI均为高信号,中心有流空信号,MRA均清楚显示出病变的部位、大小、形态及血流动力学的特点。DSA表现为肿瘤包绕颈动脉,颈动脉分叉角度增大,肿瘤均匀染色,可显示供血动脉。结论CT、MRI和DSA均有特征性表现,诊断比较容易,若将三种方法优化组合,可优势互补,为制定最佳手术方案提供科学、准确而全面的依据。
Objective To investigate the value of CT, MRI and DSA in the diagnosis of carotid body tumor. Methods Totally 10 cases of carotid body tumor were confirmed by pathology. Among them, MRIT1WI, T2WI and contrast-enhanced MRA were performed in 4 cases. CT scan and contrast-enhanced MRI were performed in 6 cases. DSA and TBO were performed in 10 cases. Results Ten cases were diagnosed as carotid body tumor by CT, MRI and DSA respectively. The coincidence rate was 100% with clinical and pathological diagnosis. All 10 lesions were located at the bifurcation of the carotid artery. CT scan mainly for the uniformity of low-density spherical lesions, CT value 25 ~ 37Hu. MRI features T1WI, T2WI are high signal, the center has a flow empty signal, MRA clearly shows the lesion location, size, shape and hemodynamic characteristics. DSA showed the tumor surrounding the carotid artery, carotid bifurcation angle increases, the tumor even staining, can show the feeding artery. Conclusions CT, MRI and DSA all have the characteristic manifestation, the diagnosis is relatively easy. If the three methods are combined optimally, they can complement each other’s advantages and provide scientific, accurate and comprehensive basis for making the best surgical plan.