摘要:目的:探讨磁共振弥散加权成像(DWI)与动态增强扫描(DCE-MRI)在甲状腺良、恶性结节的鉴别诊断价值。方法术前分别对123例甲状腺结节病变患者(共169个病灶)行MR常规平扫及动态增强扫描(DCE-MRI)、DWI(b值为150、300、500s/mm^2)检查,观察各组常规、DWI图的信号表现,测量病灶的表观扩散系数(ADC)值,绘制及比较TIC曲线,作出诊断,最后与病理对照分析。结果平扫T1WI良性结节呈等或略低信号,恶性结节多呈不均匀稍低或等信号;
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