【摘要】 目的探讨磁共振磁化传递对比（MTC）技术对脑内微小转移瘤的应用价值。方法对37例患有脑转移瘤的病人行常规扫描后再行T₁-FLAIR和SE序列的T₁WI加MTC技术增强扫描,分别统计增强后T₁-FLAIR和T₁WI+MTC序列显示转移瘤的数目、大小、位置等,并比较2种序列图像的病灶-背景的对比度/噪声（C/Ns）值。结果 37例患者中,共计135个病灶,T₁WI+MTC显示133个病灶,显示率为98.5%,T₁-FLAIR序列显示129病灶,显示率为95.6%。T₁WI+MTC序列图像病灶-背景的C/Ns值为28.95±6.43,T₁-FLAIR序列图像病灶-背景的C/Ns值为14.45±7.64,T₁WI+MTC序列的C/Ns值高于T₁-FLAIR序列的C/Ns值（t=7.06,P<0.01）。结论在显示脑内微小转移瘤方面,增强T₁WI+MTC序列比T₁-FLAIR序列更为敏感,MTC技术对评估脑内转移瘤具有重要的临床意义。更多还原

【Abstract】 Objective To investigate the value of magnetic transfer contrast（MTC） in demonstrating intracranial metastasis.Methods 37 patients with intracranial metastases underwent MRI including contrast-enhanced T₁-FLAIR and T₁-weighted sequence with MTC（T₁+MTC）.The number,size,location,and contrast-to-noise ratio（CNR）of the metastases on T₁-FLAIR and T₁+MTC images were compared.Results Of 135 metastatic lesions,T₁+MTC images showed significantly（t=7.06,P<0.01）more lesions（133,98.5%）with higher CNR（28.95 ± 6.43） than T₁-FLAIR（129,95.6%,14.45 ± 7.64）.Conclusion T₁+MTC is more sensitive than T₁-FLAIR in demonstrating intracranial metastasis.更多还原