問題詳情
15.下列有關單一能量窄光子射束半值層（HVL）的敘述何者正確？
(A)1st HVL = 2nd HVL = 3rd HVL
(B)1st HVL < 2nd HVL < 3rd HVL
(C)1st HVL > 2nd HVL > 3rd HVL
(D)1st HVL , 2nd HVL , 3rd HVL 互不相關
參考答案
答案：A
難度：適中0.653465
統計：A(66),B(26),C(5),D(1),E(0)
用户評論
【Atlas】評論
單一能量:1st HVL = 2nd HVL = 3rd HVL 連續能量:1st HVL < 2nd HVL < 3rd HVL (射束能量會越來越強)