Diagnostic value of diffusion-weighted MRI and conventional MRI in the differentiation of benign and malignant orbital lesions

Purpose: The aim of this study was to assess the role diffusion-weighted imaging (DWI) and conventional magnetic resonance (MRI) in differentiation benign malignant orbital lesions. 
 Materials Methods: 43 patients (27 women 16 men; mean age: 26.3±28.5) with lesions were assessed MRI DWI. apparent diffusion coefficient (ADC) measured, maximum ADC (ADCmax), (ADCmean), minimum (ADCmin), ratio ADCmean cerebral white matter (ADCmeanratio), ADCmin (ADCminratio) calculated. T1-weighted T2-weighted features contrast enhancement patterns determined. diagnostic performances variables for assessed.
 Results: ADCmean, ADCmin, ADCmeanratio, ADCminratio significantly lower than those ones . ADCmeanratio had highest performance a sensitivity specificity 87.5% 70.4% at threshold 1.27. Selecting cut-off 0.97 × 10-3 mm2/s differentiating revealed 75% 74% specificity. Conventional not associated diagnosis).
 Conclusion: values obtained from DWI contribute