financially supported by the National Key Research and Development Program of China(No.2017YFE0100100);the Changzhou Key Research and Development Plan,China(No.CE20205046);the Fundamental Research Funds for the Central Universities of China(No.B220203019)。
目的比较铜和铜-铝复合滤过板对X线的透射线率,为合理选用附加滤过板提供依据。方法Definium6000数字化X线摄影机,70~130 kV,200 mA,AEC模式,源-像距150 cm和180 cm。三组附加滤过分别为0.1 mm Cu和0.1 mm Cu+1.5 mm Al、0.2 mm Cu和0.2...