73.附圖為上腹部超音波影像,箭號所指為下列何者?
(A)彗尾假影(comet tail artifact)
(B)鏡像假影(mirror image artifact)
(C)音波陰影(acoustic shadowing)
(D)多重回音假影(reverberation artifact)
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統計: A(223), B(46), C(2205), D(112), E(0) #2038950
統計: A(223), B(46), C(2205), D(112), E(0) #2038950