Table 1. Area under the receiver operating characteristics curve (Az) for gadoxetic acid-enhanced MRI and multiphasic multirow detector CT (MDCT) for the detection of small (≤2 cm) hepatocellular carcinomas in patients with chronic liver disease.

Technique	Observer 1	Observer 2
Gadoxetic acid-enhanced MRI	0.874±0.032 (0.807, 0.925)	0.863±0.033 (0.794, 0.916)
MDCT	0.660±0.047 (0.575, 0.739)	0.687±0.046 (0.602, 0.764)
Difference in Az	0.214±0.053	0.176±0.049

Values are Az±one standard error. The differences in Az of the two techniques for each observer are statistically significant (p<0.001). Data in parentheses are 95% confidence intervals.