Table 2

‚ÄÉMagnitude of improvement in subjective image quality assessment (SD)

Angiogram typeNumber of imagesEarly phaseMid-phaseLate phase
Scale: Grade 0 means that both images were of equal quality. For each image pair we determined if one image was mildly (grade 1), moderately (grade 2), or highly superior (grade 3) *p<0.05 in one paired Student t test comparing to null hypothesis. **p<0.01 in one paired Student t test comparing to null hypothesis. ***p<0.001 in one paired Student t test comparing to null hypothesis.
IV FA100.80 (0.92)*1.00 (0.82)**2.10 (0.99)***
ICGA101.20 (0.79)**1.80 (0.92)***2.30 (0.48)***
Oral FA101.56 (0.88)***2.22 (0.83)***2.44 (0.53)***