Fig. 9

Subjective evaluation of image quality. Short-axis images from 95 subjects at rest and 49 subjects post-exercise were evaluated. For 2-chamber images, scans from a total of 92 subjects at rest and 44 subjects pre-exercise were assessed. Therefore, there were a combined total of 280 scans, including 2-chamber and short-axis images. Two readers separately rated data on a 4-point Likert scale based on tagline quality (1-excellent; 2-good; 3-moderate; 4-poor) and artifact level (1-none; 2-minimal; 3-moderate; 4-significant). a The tagging line quality score for 2-chamber and short-axis images at rest was 1.9 ± 0.8 and 1.6 ± 0.7. Post-exercise, the 2-chamber score increased to 2.5 ± 0.8, and the score for short-axis images increased to 1.9 ± 0.7. The artifact level for both 2-chamber and short-axis images pre-exercise was 1.4 ± 0.7 and 1.2 ± 0.5. Artifact level rose to 1.5 ± 0.8 and 1.3 ± 0.6 for 2-chamber and short-axis images, respectively