Table 1.
Image Quality Comparison between ADIOS and NAV at Proximal–Middle Portion of Renal Arteries (Main Renal Arteries and Extraparenchyma Branches)
| rSNR | rCNR | Reviewer scorea
|
Vessel sharpness (mm−1) | ||
|---|---|---|---|---|---|
| L | R | ||||
| ADIOS (A) | 44.9±6.9 | 31.0±6.0 | 4.44±0.50 | 4.63±0.48 | 0.88±0.13 |
| NAV (A) | 44.5±4.5 | 31.2±8.7 | 4.44±0.50 | 4.38±0.70 | 0.87±0.11 |
| Paired diff. | 0.4±4.2 | 0.1±3.6 | 0 | 0.25±0.66 | 0.01±0.06 |
| P value | 0.78 | 0.94 | 1 | 0.35 | 0.70 |
| ADIOS (B) | 38.3±2.9 | 28.1±3.7 | 4.33±0.75 | 4.50±0.76 | 0.90±0.08 |
| NAV (B) | 34.7±7.4 | 24.5±7.1 | 4.50±0.76 | 4.50±0.76 | 0.85±0.07 |
| Paired diff. | 3.5±4.3 | 3.6±4.6 | −0.17±0.37 | 0 | 0.05±0.03 |
| P value | 0.13 | 0.14 | 0.36 | 1 | 0.01 |
| ADIOS (T) | 42.3±6.5 | 29.9±5.4 | 4.40±0.61 | 4.57±0.62 | 0.89±0.11 |
| NAV (T) | 40.6±9.2 | 28.3±6.9 | 4.46±0.62 | 4.43±0.73 | 0.87±0.09 |
| Paired diff. | 1.7±4.5 | 1.5±4.4 | −0.07±0.25 | 0.14±0.52 | 0.02±0.05 |
| P value | 0.19 | 0.22 | 0.33 | 0.34 | 0.14 |
a
Based on five-point scale (from 1=nondiagnostic to 5=excellent).
rSNR=relative signal-to-noise ratio; rCNR=relative contrast-to-noise ratio; ADIOS=adaptive online self-gating; NAV=diaphragm navigator; A=Group A; B=Group B; T=Total (Group T).