Effect of SnapShot Freeze 2 on Reducing Pulsation Artifacts in Coronary Artery Imaging of Patients With High Heart Rates

BACKGROUND This study aimed to evaluate the effect of SnapShot Freeze 2 (SSF2) on reducing pulsation artifacts in coronary artery imaging of patients with high heart rates, compared with SnapShot Freeze (SSF) and not using SSF (no-SSF). MATERIAL AND METHODS End-diastolic (70-80% phase) and end-systolic (40-50% phase) images from 50 patients with heart rates above 80 bpm who underwent coronary computed tomography angiography (CCTA) in the Department of Radiology at our hospital between January and June 2023 were included. Subjective, objective, and artificial intelligence (AI)-enabled assessments were performed to evaluate image quality across coronary artery segments, artifact indices, and number of coronary artery segments detected by the AI system for images processed with each algorithm. RESULTS SSF2 yielded significantly higher subjective image-quality scores than SSF and no-SSF in both diastolic and systolic phases (all P