52.立體定位放射手術難以用Farmer-type游離腔準確測量劑量,其因素為何?①機頭散射太多 ②照野太小 ③
缺乏荷電粒子平衡
(A)僅①②
(B)僅①③
(C)僅②③
(D)①②③
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統計: A(129), B(188), C(1090), D(1074), E(0) #2038399
統計: A(129), B(188), C(1090), D(1074), E(0) #2038399