55 下列用於體外放射治療病患頭頸部固定用之頭枕,何種有最小的皮膚劑量增建效應?
(A)梯模頭枕(Timo supports)
(B)組織填補物(bolus)製頭枕
(C)西弗門頭枕(Silverman supports)
(D)下巴支撐架(chin support)

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統計: A(44), B(45), C(87), D(29), E(0) #1067413