题目内容
夹层腹主动脉瘤的彩色多普勒超声表现是( )
2021-10-14
A.血管腔内有条带结构,一端连于腹主动 脉侧壁
B.血管腔内回声增高
C.血管腔内有条带结构不受心动周期影响
D.腹主动脉可继发扩张,搏动增强
E.真腔内彩色血流带较亮,假腔内色彩 较暗
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