试题与答案

符合左心房肥大标准的是 A.Rv1振幅为1.2mV,Rv5振幅为3.0mV B.

题型:单项选择题

题目:

符合左心房肥大标准的是

A.Rv1振幅为1.2mV,Rv5振幅为3.0mV
B.Rv5+Sv1振幅为5.0mV
C.PⅡ、Ⅲ、aVF振幅为0.35mV,Ptfv1绝对值为0.05mm·s
D.Ⅱ、Ⅲ、aVF导联P波时限为0.12s,可见切迹
E.额面QRS心电轴为+110°,V1导联QRS波群呈rsR’型,V5导联S波增宽且R/S<1,R’v1振幅为1.9mV

答案:

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参考答案:E解析: 目前三维超声图像是在采集一系列二维图像信息基础上进行表面成像技术、透明成像技术、多平面成像技术三维重建形成的。伪彩色灰阶显示为二维显像技术。

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