Table 4.

Diagnostic accuracies of 13 diagnostic criteria, calculated for pre-contrast MR scans and post-contrast MR scans as relative agreement with the standard of reference (1.00=100%) in the subgroup of 36 patients. The numbers in brackets represent the 95% Confidence intervals. A difference with a confidence interval not straddling zero was considered significant.

Category	Pre contrast Accuracy	Post contrast Accuracy	Difference
Diagnosis	0.667 (0.519–0.778)	0.611(0.454–0.731)	0.056(−0.074–0.157)
Organ/Location	0.926 (0.833–0.963)	0.87(0.741–0.935)	0.056(−0.028–0.148)
Cyst	0.843(0.694–0.778)	0.75(0.602–0.852)	0.093(−0.019–0.204)
Homogeneity	0.667(0.528–0.778)	0.685(0.546–0.796)	−0.019(−0.167–0.093)
Necrosis	0.556(0.426–0.667)	0.565(0.417–0.676)	−0.009(−0.139--0.139)
Definition Margins	0.713(0.574–0.806)	0.667(0.519–0.778)	0.046(−0.065–0.148)
Infiltrations	0.63(0.472–0.472)	0.657(0.519–0.759)	−0.028(−0.148–0.083)
Crossing Midline	0.852(0.750–0.907)	0.833(0.685–0.907)	0.019(−0.065–0.111)
Vessel Encasement	0.843(0.728–0.907)	0.787(0.648–0.870)	0.056(−0.056–0.157)
Thrombosis	0.898(0.787–0.954)	0.861(0.722–0.935)	0.037(−0.046–0.120)
Liver Metastasis	0.852(0.769–0.898)	0.917(0.796–0.963)	−0.065(−0.148–0.019)
Bone Marrow Metastasis	0.852(0.704–0.926)	0.806(0.648–0.898)	0.046(−0.028–0.130)
Lymph node Metastasis	0.843(0.694–0.926)	0.824(0.676–0.917)	0.019(−0.120–0.139)