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目的探讨冠状位CT扫描在鼻咽癌颅底侵犯诊断中的应用价值。方法对233例鼻咽癌患者进行轴位及冠状位CT扫描,比较两种体位对鼻咽癌颅底侵犯的检出情况。结果轴位扫描所见肿瘤侵袭、转移灶中173例经冠状位扫描证实;轴位扫描无骨质侵袭及转移者16例中,经冠状位扫描见4例骨质破坏;轴位扫描所见10例难以确定是否骨质破坏者,经冠状位扫描证实4例骨质破坏,6例正常;另外,冠状位扫描显示了21例轴位扫描未发现的骨质破坏;同时有21例患者轴位扫描可见骨质破坏,但冠状位仅显示12例,且位置不同。结论 CT扫描在鼻咽癌颅底侵犯影像诊断中具有重要意义,但单纯轴位扫描具有一定局限性,联合应用轴位与冠状位的扫描,可提高诊断准确率。
Objective To investigate the value of coronal computed tomography in the diagnosis of skull base invasion of nasopharyngeal carcinoma. Methods 233 cases of nasopharyngeal carcinoma patients underwent axial and coronal CT scan, comparing the two positions on the detection of skull base invasion of nasopharyngeal carcinoma. Results Tumor invasion was observed in axial scanning. The coronal scan of 173 cases was confirmed in the metastatic lesions. Among the 16 cases without axial invasion and metastasis, the bone destruction was seen in 4 cases by coronal scan. 10 cases were difficult to determine whether the bone destruction, coronal scan confirmed 4 cases of bone destruction, 6 cases were normal; In addition, the coronal scan showed 21 cases of axial scan found no bone destruction; while 21 patients with axis Bone scan showed bone destruction, but only 12 cases showed coronal, and the location is different. Conclusion CT scan is of great significance in the diagnosis of skull base invasion of nasopharyngeal carcinoma. However, axial scan alone has some limitations. Combined application of axial and coronal scanning can improve the diagnostic accuracy.