The tumors were of slightly hypo or iso-hypo signal intensity on T 1WI and hyper or iso-hyper signal intensity on T 2WI. The hypo or mixed density were showed by CT.

• MRIT1WI肿瘤呈稍低信号或低、等混杂信号 ,T2 WI呈高信号及高、等混合信号 ,CT平扫为低或混合密度。