Table 1:

Wilcoxon rank sum test results—both readers combineda

FeatureSOC vs FASTFAST-DL vs SOCFAST-DL vs FAST
MeanP ValueMeanP ValueMeanP Value
Perceived SNR4.1 (SD, 0.8)<.0013.5 (SD, 1.3)<.0014.3 (SD, 1.0)<.001
Sharpness4.5 (SD, 0.7)<.0013.5 (SD, 1.5).0054.7 (SD, 0.9)<.001
Artifacts3.9 (SD, 0.8)<.0013.5 (SD, 1.1)<.0014.1 (SD, 0.9)<.001
Anatomic/lesion conspicuity4.2 (SD, 0.7)<.0013.3 (SD, 1.1).0064.3 (SD, 0.7)<.001
Image contrast4.0 (SD, 0.7)<.0013.4 (SD, 1.1).0044.1 (SD, 0.8)<.001
GM/WM differentiation4.3 (SD, 0.7)<.0013.4 (SD, 1.2).0094.5 (SD, 0.8)<.001
  • a SOC is superior to FAST for all criteria (P values <.001). Numbers higher than 3 represent preference for the first of the 2 sequences listed in the upper row. FAST-DL is superior to SOC for all criteria (P values < .008), except for GM/WM differentiation. While this metric trended to be superior for FAST-DL versus SOC, it did not reach statistical significance after Bonferroni correction (P = .009). FAST-DL is superior to FAST for all criteria (P values <.001).