Qualitative and quantitative analyses of 3D T2WI-DRIVE and sDRICE images
| Parameter | 3D T2WI-DRIVE | sDRICE | P Value |
|---|---|---|---|
| Lesion conspicuity on the neurovascular contact pointa | |||
| Rater 1 | |||
| Overall (N = 12) | 2.0 (1–3) | 3.0 (2–3) | .006 |
| HFS (n = 6) | 1.5 (1–2) | 3.0 (3–3) | .023 |
| TN (n = 6) | 2.5 (1–3) | 3.0 (2–3) | .102 |
| Rater 2 | |||
| Overall (N = 12) | 2.0 (1–3) | 3.0 (2–3) | .004 |
| HFS (n = 6) | 1.5 (1–2) | 3.0 (2–3) | .038 |
| TN (n = 6) | 2.0 (1–3) | 3.0 (3–3) | .038 |
| Contrast (N = 12)b | |||
| Vessel/nerve | −1.21 ± 0.72 | 0.28 ± 0.15 | <.001 |
| Vessel/brain stem | −1.08 ± 0.67 | 0.17 ± 0.88 | <.001 |
| CNR (N = 12)b | |||
| Vessel/nerve | −1.80 ± 1.47 | 3.34 ± 1.99 | .007 |
| Vessel/brain stem | −0.97 ± 0.58 | 2.25 ± 1.57 | .003 |
↵a Scoring data are listed for both raters as rater 1/rater 2 and correspond to the median (with range) across patients. P values were calculated with the Wilcoxon signed rank test.
↵b Contrast and CNR data are means ± SD. The P values were calculated with a paired t test. Contrasta/b = 2(SIa − SIb)/(SIa + SIb), and CNRa/b = (SIa − SIb)/SDa.