問題詳情
66.多葉式準直儀（multileaf collimator, MLC）與鉛合金擋塊（Cerrobend block）相較，下列敘述何者正確？
(A)MLC可得到較小的射束半影區及射束穿透量
(B)block形成的照野，邊緣劑量分布曲線較為平滑
(C)block較MLC更容易變換不同照野
(D)MLC較不容易損壞
(A)MLC可得到較小的射束半影區及射束穿透量
(B)block形成的照野，邊緣劑量分布曲線較為平滑
(C)block較MLC更容易變換不同照野
(D)MLC較不容易損壞
參考答案
答案：B
難度：簡單0.835366
統計：A(12),B(137),C(4),D(2),E(0)
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