[Comparison of Procedural Parameters and Efficiency between Angio FFR and Wire-based FFR for Functional Severity
Hirotaka Itai1, Daichi Ideguchi1, Toshihisa Kawasaki1
1Clinical Radiology Service, National Hospital Organization Ureshino Medical Center.
Purpose:
Angio FFR has attracted attention as a method for assessing the functional severity of intermediate coronary artery stenosis. However, detailed comparisons with wire-based FFR in terms of radiation dose and procedural efficiency remain limited. This study aimed to compare examination-related parameters and procedural efficiency between the two methods and to evaluate the clinical utility of angio FFR.
Methods:
This retrospective clinical study included patients who underwent functional assessment of coronary artery stenosis using either angio FFR or wire-based FFR during cardiac catheterization. The evaluated parameters were reference-point air kerma at the patient entrance reference point (Ka,r), air kerma-area product (PKA), fluoroscopy time, contrast volume, number of images, and angiography room stay time. Continuous variables were compared using median values and interquartile ranges.
Results:
Compared with the wire-based FFR group, the angio FFR group showed significantly lower Ka,r, fluoroscopy time, contrast volume, and angiography room stay time (p<0.05). No significant differences were observed in PKA (p=0.95) or the number of images (p=0.27).
Conclusion:
Angio FFR was associated with lower Ka,r and improved procedural efficiency compared with wire-based FFR, suggesting its potential utility in functional assessment of coronary artery stenosis.
