试题与答案

关于超声波分辨率的描述,下列错误的是()。 A.实际轴向分辨率大于理论值(λ/2)

题型:单项选择题 A型题

题目:

关于超声波分辨率的描述,下列错误的是()。

A.实际轴向分辨率大于理论值(λ/2)

B.声束聚焦后,使横向分辨率提高

C.提高帧频,检测深度和扫描线数将相应减少

D.彩色血流显像时,帧频不能<10~12帧/S

E.声束聚焦后,使侧向分辨率提高

答案:

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