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FIG 4. Histogram showing Az for each MR image and observer. Asterisk represents statistical significance (P < .05 by univariate z score test). For all observers, the high-b-value DWI achieves the largest Az. For observer 1, Az between any two sequences shows statistically significant difference. For observer 2, the statistically significant difference is noted between the high-b-value DWI or FLAIR images and any other sequences. No significant difference is observed between routine DWI and T2WI. For observer 3, statistically significant difference is noted between any two sequences, except for Az between T2WI and FLAIR imaging.
