Objective: Is to study the role of multi-parametric MRI including the novel sequences, diffusion weighted images (DWI) in the characterization of ovarian cystic lesions. Methodology: This study carried out in MRI unit, Radiology Department of Ain Shams University Hospitals. 20 patients with pathologically proven nature of ovarian cyst underwent pelvic MRI examination including diffusion weighted imaging (DWI) and apparent diffusion coefficient (ADC) Result: Diffusion weighted imaging (DWI) and apparent diffusion coefficient (ADC) to detect nature of ovarian cysts can't be carried alone but need to be combined by conventional and DCE MRI.