Effect of a breathing exercise program on coronary artery motion artifacts in 256 rows of coronary computed tomography angiography in patients with different heart rate variability.

ABSTRACT:

Background

Coronary artery motion artifact is a major limitation of coronary computed tomography angiography (CCTA). The purpose of this study was to investigate the effect of respiratory status on coronary motion artifacts under different heart rate variability (HRV) conditions.

Methods

Between January 2022 and January 2024, 935 CCTA patients were prospectively enrolled and randomly assigned to a breath-holding group (group A) and a free-breathing group (group B), and each group was subdivided into three subgroups based on HRV ≤3 bpm, HRV 4-10 bpm, and HRV ≥11 bpm. Subjective image quality was assessed using a four-point Likert scale: 4 points = excellent, no artifacts; 1 point = severe artifacts, unassessable. Between-group comparisons were made to contrast and analyze the

SUBMITTER: Ma H 

PROVIDER: S-EPMC11994519 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature