27.下列何者不是影響超音波影像側向解析度(lateral resolution)的因子?
(A)頻率(frequency)
(B)口徑(aperture)
(C)與換能器的距離(distance from the transducer)
(D)脈衝循環數(number of cycles in the pulse)
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統計: A(361), B(279), C(548), D(1361), E(0) #1740968
統計: A(361), B(279), C(548), D(1361), E(0) #1740968