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Table 5: Evaluation of diagnostic performance on combined pre- and postcontrast MR images relative to precontrast images alone
End Point Reader Precontrast (n = 89) Pre- + Postcontrast (n = 89) P Value^{^a}
Tumor vs nontumor 1 75 (84.3%) 84 (94.4%) .003
2 67 (75.3%) 81 (91.0%) <.001
3 78 (87.6%) 82 (92.1%) .046
Specific diagnosis 1 52 (58.4%) 65 (73.0%) .003
2 47 (52.8%) 63 (70.8%) <.001
3 50 (56.2%) 59 (66.3%) .02
↵a McNemar test.