Table 2. Diagnostic accuracy of functional MRI parameters to discriminate allografts with acute rejection from isografts without rejection.

Diagnostic parameter	AUC [95% CI]	Youden selected threshold	Sensitivity at threshold	Specificity at threshold	Youden index at threshold
ADC cortex	0.97 [0.90;1]	1.315*10-3 mm2/s	89%	100%	89%
ADC outer medulla	0.92 [0.77;1]	1.423*10-3 mm2/s	89%	100%	89%
T2 cortex	0.64 [0.35;0.92]	47.2 ms	56%	99%	55%
T2 OSOM	0.52 [023;0.80]	55.9 ms	33%	99%	32%
T2 ISOM	0.80 [0.59;1]	52.4 ms	60%	78%	82%
T2 difference	0.85 [0.67;1]	8.7 ms	67%	99%	66%

The diagnostic accuracies to discriminate allografts with acute rejection from isografts without rejection by functional MRI at day six after transplantation are given

ADC = apparent diffusion coefficient, AUC = area under the curve, CI = confidence interval, ISOM = inner stripe of the outer medulla, OSOM = outer stripe of the outer medulla.