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目的比较不同辐射剂量下采用迭代重建算法(IR)与滤过反投影法(FBP)对低对比的检出能力及CT影像质量。方法采用市售肝脏体模,包括12个低密度模拟肿块
Objective To compare the detection performance of low contrast and CT image quality using iterative reconstruction (IR) and filtered back projection (FBP) at different doses. Methods Commercial liver phantoms were used, including 12 low-density mock-ups