59. 附圖為一對wedged fields的射束安排,欲使治療體積劑量最均勻,若θ=55°,則
為幾度?

(A)35°
(B)50°
(C)55°
(D)70°
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統計: A(258), B(74), C(297), D(1452), E(0) #2408923
統計: A(258), B(74), C(297), D(1452), E(0) #2408923