Results: Combined with helical CT precontrast and three-phases enhanced images, the accuracy in preoperative tumor staging and diagnosis of metastatic lymph nodes were 93.9% and 95.9% respectively.

• 结果：螺旋CT平扫结合三期增强扫描图像对术前肿瘤分期和诊断颈部淋巴结转移的准确性分别是93.；8%25及95