69.下圖膽囊超音波檢查,在膽囊呈現多條線狀高回音,為下列何種假影(artifact)?

(A)comet tail (reverberation) artifact
(B)mirror image artifact
(C)shadowing
(D)grating lobe artifact
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統計: A(42), B(11), C(8), D(12), E(0) #3817824
統計: A(42), B(11), C(8), D(12), E(0) #3817824