27.都卜勒超音波(Doppler ultrasound)操作時最常見的假影(artifact)為下列何者?
(A)取樣不足(aliasing)
(B)範圍難定(range ambiguity)
(C)位置鏡影錯置(location mirror image)
(D)電磁干擾(electromagnetic interference)
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統計: A(1358), B(261), C(182), D(118), E(0) #2867185
統計: A(1358), B(261), C(182), D(118), E(0) #2867185