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Fig. 2. —Graph shows time–density curves of tumor-to-liver contrast (TLC) values for 27 hypervascular hepatocellular carcinomas in group A (solid line) and group B (dotted line). At 25 sec, there was no significant difference in mean TLC values between groups A and B. At 40 sec, TLC values were significantly higher in group A (p < 0.02). However, there was no significantly difference in mean TLC values between groups A and B at 60 and 180 sec.