6.使用一平行X光柵(parallel grid),柵高(height of the grid strip)為2.4 mm且鉛條間寬(grid strip interspace width)為300 µm,已知SID(source-to-image receptor distance)為120 cm,則影像接受器中央軸到截止距離(distance to cutoff)為多少cm?
(A)5
(B)10
(C)15
(D)20
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統計: A(98), B(335), C(1524), D(90), E(0) #1633952
統計: A(98), B(335), C(1524), D(90), E(0) #1633952