28.下列那種超音波假影是多重反射造成的?
(A)鏡子假影(mirror artifact)
(B)增強假影(enhancement artifact)
(C)陰影假影(shadowing artifact)
(D)範圍模糊假影(range ambiguity)
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統計: A(1021), B(111), C(55), D(234), E(0) #3199166
統計: A(1021), B(111), C(55), D(234), E(0) #3199166