题目内容
软组织血管瘤MRI最有价值的征象是：
2021-09-30
A.T2WI上病灶周围有低信号环
B.T1WI上高信号，T2WI上高信号
C.明显占位效应
D.流空现象
E.T1WI上高信号，T2WI上低信号
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