50.為量測筆尖式質子射束的 IDD(integral depth dose),應使用下列何種游離腔?
(A)Advanced Markus chamber
(B)pinpoint chamber
(C)Farmer chamber
(D)Bragg peak chamber
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統計: A(31), B(364), C(152), D(885), E(0) #3135837
統計: A(31), B(364), C(152), D(885), E(0) #3135837