ABSTRACT
Purpose To investigate the effect of low contrast dose and low tube voltage combined with adaptive statistical iterative reconstruction (ASIR) on image quality of abdominal CT angiography. Materials and Methods 139 patients with body mass index (BMI) 0.80) in both groups, the subjective score of group A and group B were 4.60±0.51 and 3.81±0.76, respectively, and the difference was statistically significant (Z= - 6.86, P0.05). The total amount of iodine dose in group A and group B was 270 mg and 350 mg respectively, with a 22.86% reduce of the total iodine for each patient in A group than in B group. Conclusion For patients with BMI<22 kg/m2, it is feasible to use low dose contrast medium with low tube voltage and ASIR, which may not only improve the image quality of abdominal CTA but also reduce the radiation dose and iodine content.