CT和MRI对舌鳞状细胞癌诊断价值的比较

The Diagnostic Value of Computed Tomography and Magnetic Resonance Imaging in Squamous Cell Carcinoma of Tongue:A Comparative Study

目的评估CT和MRI术前预测舌癌厚度的价值,并探讨MRI上舌癌厚度与淋巴结转移之间的关系。方法选择23例舌鳞癌患者,术前均行CT和MRI检查。术后测量舌癌厚度,比较CT和MRI上的舌癌厚度与实际舌癌厚度,并分析MRI上的舌癌厚度与淋巴结转移率之间的关系。结果(1)CT上的舌癌厚度与实际舌癌厚度之间存在显著性差异(P<0.05),MRI上的舌癌厚度与实际舌癌厚度之间无显著性差异(P>0.05);(2)当MRI上的舌癌厚度≥2cm时,患者的淋巴结转移率为84.6%;而当MRI上的舌癌厚度<2cm时,患者的淋巴结转移率为10.0%,两者之间存在显著性差异(P<0.01);(3)MRI无需增强即能清楚显示舌癌的浸润范围,成像优于CT。结论(1)MRI术前判断舌癌厚度优于CT;(2)MRI上的舌癌厚度可作为预测淋巴结转移的参考依据;(3)舌癌术前检查应首选MRI。

Objective To compare the diagnostic values of CT and MRI in estimating the thickness of lingual squamous cell carcinoma,and evaluate the relationship between the thickness of tongue carcinoma on MRI and lymph node metasta-sis rate.Methods23patients with squamous cell carcinoma of tongue.All the23patients were examined with CT and MRI.The actual thickness of tongue carcinoma was measured after surgery.Result(1)There was a significant difference between the actual thickness of tongue carcinoma and the thickness shown on CT(P<0.05),and no significant difference between the actual thickness of tongue carcinoma and the thickness shown on MRI(P>0.05).(2)Lymph node metastasis rate was84.6%when the thickness of tongue carcinoma on MRI was greater than or equal to2cm,and10.0%when the thickness of tongue carcinoma on MRI was less than2cm.There was a significant difference between the two groups of pa-tients.(3)MRI can show the area of the tongue carcinoma clearly without enhancement.It has better resolution than CT.Conclusions(1)MRI is better than CT in estimating the thickness of tongue carcinoma.(2)Thickness of tongue carcinoma on MRI could be employed to estimate the possibility of lymph node metastasis.(3)MRI should be the first choice in the diagnosis of tongue carcinoma.