الفهرس | Only 14 pages are availabe for public view |
Abstract Diffusion-weighted imaging is sensitive to changes in the micro diffusion of water into both intracellular and extracellular spaces and its use may improve MR characterization of gynecological pelvic lesions. Our study was conducted on sixty three gynecological pelvic masses; The patients with benign tumors (No.=39) (62%), while those with malignant tumors (No.=24) (38%) . after taking history we do ultrasound examination to confirm the finding then we took consent from the patient to do the examination after that we make sure that the patient has no allergy to contrast and renal function is normal . By performing DWI using different b-values, quantitative analysis, namely, the calculation of apparent diffusion coefficient (ADC) is possible and can be displayed as a parametric map (ADC map). Restricted water diffusion demonstrates high signal intensity on DWI and lower ADC values on ADC map. After doing MRI with DWI we collect our data and presented an individual analysis of the diagnostic performance of DWI during the routine MR examination. DWI had shown 95% (83%:100%) sensitivity in its individual performance; yet a low specificity which was 54% (37%:70%). Such low specificity value was attributed to the presence of 16 benign masses that have mimicked malignancy on DWI .This means that DWI is good sensitive but not good specific test, its relatively good negative but bad positive test with low statistical significance, meaning that the solo performance of DWI is not an applicable way to discriminate benign from malignant gynecological masses Conclusion |