论文部分内容阅读
Objective To assess the program of low dose chest CT screening with iterative reconstruction technique via reducing the tube current and using SAFIRE reconstruction. Methods Institutional board review approval was obtained.Our experiment included totally 90 subjects who underwent chest CT screening.The patients were randomly assigned into three protocols: A(120KV/220mAs),B(120KV/60mAs)and C(120KV/30mAs).Standard convolution FBP was used to reconstruct protocols A(group A),B(group B1)and C(group C1)image sets,and iterative reconstructions(SAFIRE)was used to reconstruct protocol B(group B2)and C(group C2)image sets.