Differentiation of orbital lymphoma and idiopathic orbital inflammatory pseudotumor: combined diagnostic value of conventional MRI and histogram analysis of ADC maps

Table 3 Diagnostic Performance of Each Histogram parameter

Histogram parameter	Cutoff value	Sensitivity	Specitivity	AUC
Mean	0.879	72.70%	94.40%	0.871(0.727–0.956)
Median	0.834	72.70%	94.40%	0.872(0.729–0.957)
ADC₁₀	0.535	86.40%	83.30%	0.899(0.762–0.972)
ADC₂₅	0.718	72.70%	94.40%	0.895(0.757–0.970)
ADC₇₅	1.097	72.70%	94.40%	0.872 (0.729–0.957)
ADC₉₀	1.280	68.40%	93.70%	0.851(0.703–0.944)
Kurtosis	1.976	72.70%	72.20%	0.710(0.545–0.842)

Data in parentheses indicate 95% confidence intervals. Unit for ADC value is 10⁻³ mm²/s. ADC _n, nth percentile value of cumulative ADC histogram; AUC, area under the ROC curve

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