Fig. 2

Impact of different reconstruction algorithms on coronary CTA image quality and FAI. (A) demonstrates that reconstruction algorithms have no significant effect on coronary attenuation values (all P > 0.05). (B) shows that reconstruction algorithms significantly influence image noise, with DLIR-H achieving the greatest noise reduction, followed by ASiR-V50%, while FBP demonstrates the least noise reduction. These differences were statistically significant (all P < 0.001). (C) indicates that there is no significant difference in pericardial fat attenuation values across reconstruction algorithms (all P > 0.05). (D) illustrates that reconstruction algorithms significantly affect FAI, with the highest FAI observed in DLIR-H, followed by ASiR-V50%, and the lowest in FBP; all differences were statistically significant (all P < 0.001).