Wu R, et al. - Researchers pursued a comparison of the quality of abdominal CT angiography (CTA) images obtained utilizing conventional reconstruction algorithms with those obtained utilizing a novel iterative algorithm (forward projected model-based iterative reconstruction solution, FIRST) for assessing arteries in the abdomen. They found that FIRST and adaptive iterative dose reduction 3D (AIDR 3D) significantly reduced image noise compared with the filtered back projection (FBP). As compared with FBP or AIDR 3D reconstruction, FIRST reconstruction yielded superior abdominal CTA images.