Abstract
AIDR 3D (Adaptive Iterative Dose Reduction 3D) is expected to be a useful method for reducing X-ray exposure. However, the effect of AIDR used in practice differs by institution. In this report, the CT value, MTF, SD, NPS, and CNR were evaluated by FBP (filtered back projection) and AIDR 3D using 320-row CT and phantom. The experimental results revealed that AIDR 3D MILD-specified SD 15 was the limit value. Ultimately, SD 14 was adopted for operation, allowing for extended image quality. Under this protocol, X-ray exposure was reduced by 50% in terms of CTDIvol.
