颈部MRA成像时应注意A.显示慢流血管采用3D-TOFB.显示慢流血管可采用3D-PCC.显示快流血管首选3D-TOFD.显示快流血管首选3D...

作者: rantiku 人气: - 评论: 0
问题 颈部MRA成像时应注意
选项 A.显示慢流血管采用3D-TOF B.显示慢流血管可采用3D-PC C.显示快流血管首选3D-TOF D.显示快流血管首选3D-PC E.CE-MRA显示动脉或静脉血管和狭窄区域
答案 C
解析 :①显示慢流血管采用2D-TOF或2D-PC二技术;②显示快流血管采用3D-TOF或2D-PC技术,但后者时血管病变可使血流缓慢而显影欠佳;③CE-MRA技术可不同时相较好地显示动脉或静脉血管和狭窄区域。

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