Additive Role of ADC Value to ORADS in Adnexal Lesions

The patients will be referred from the Gynecology department to the Kasr Al-Ainy Radiology department (Women's imaging unit) based on preliminary ultrasound examination used for cases selection. Female patients with adnexal lesions on ultrasound were subjected to MRI examination, Standardised MRI sequences will used, including DWI and DCE sequences. blinded to histopathological data, according to the O-RADS MRI scoring system. A quantitative analysis method will applied by placing a ROI on the ADC maps obtained from single-exponential DWI sequences. Additive role of ADC value will be comparied to O-RADs according to gold standard (pathological examination of adnexal lesions) after excision to correlate results of imaging and pathology. MRI examination: MR imaging was performed using a 1.5-T magnet using torso coil Diffusion WI: with b values 0, 500, 1000 and 1500 as well as ADC map. Dynamic contrast enhanced study: using 10cc of Gadopentetate dimeglumine and 20ml of saline. Injection is manual. Examination time is 4minutes with 8 series. Scan time for each series: 32secs