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Fig. 1B. —Graph shows receiver operating characteristic curves for each
radiologist with and without contrast-enhanced sonography. Graphs show
performance of radiologists 1 (A) and 2 (B). Radiologists
achieved higher area under the receiver operating characteristic curve
(Az) values when contrast-enhanced sonography was added
for interpretation than when only baseline sonography was reviewed. Difference
in Az values between with and without contrast-enhanced
sonography was statistically significant (p < 0.05). Solid line
(Az, 0.753 [A], 0.830 [B]) = without
contrast-enhanced sonography, dotted line (Az, 0.971
[A], 0.974 [B]) = with contrast-enhanced sonography.
