Table 2. Diagnostic predictive values of gadoxetic acid-enhanced MRI and multiphasic multirow detector CT (MDCT) in the detection of small (≤2 cm) hepatocellular carcinomas in patients with chronic liver disease.

Technique	Observer 1	Observer 2
Sensitivity per lesion (%)
Gadoxetic acid-enhanced MRI	89.8 (53)	86.4 (51)
MDCT	57.6 (34)	61.0 (36)
Positive predictive value (%)
Gadoxetic acid-enhanced MRI	88.3 [53/60] (7)	94.4 [51/54] (3)
MDCT	91.9 [34/37] (3)	94.7 [36/38] (2)

Numbers in parentheses in sensitivity and positive predictive values are the numbers of true-positive and false-positive lesions, respectively. For positive predictive value, numbers in brackets are the number of true-positive lesions divided by the total number of lesions assigned confidence levels of 3 or 4.

The sensitivities of the two techniques for each observer were significantly different (p<0.001). The positive predictive values of the two techniques for each observer were not significantly different (p>0.05).