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【单选题】
对彩色多普勒血流成像(彩超)与伪彩(B彩) 的描述，下列哪一项是错误的：()。A.
'彩超'是以颜色显示血流信息，伪彩是对灰阶的彩色变换
B.
'彩超'是脉冲多普勒发展而来，伪彩是对二维图象进行处理
C.
'彩超'可表示血流方向和速度， 伪彩可对不同灰阶示以不同颜色
D.
'彩超'是对血流信息处理方式与伪彩对灰阶的处理方式基本相同
E.
'彩超'显示器与伪彩显示器可以是相同的监视器
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A.
Only I is correct.
B.
Only I, II, and III are correct.
C.
Only I and III are correct.
D.
All are correct.
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A.
I only
B.
III only
C.
I and II
D.
I, II and III
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