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Fig. 1. —Graph shows composite receiver operating characteristic (ROC) curves for pooled data reviewed by three observers. Curves indicate relative accuracy with which hepatocellular carcinomas were detected on ferumoxides-enhanced MR images of all five sequences (the area under the ROC curve, [Az] = 0.964 ± 0.014) and combined CT during arterial portography (CTAP) and CT hepatic arteriography (CTHA) images (Az = 0.948 ± 0.017). Difference in mean areas under the curves was not significant.





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