الفهرس 
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Abstract
The aim with of this work is to emphasize the role of DWI in the diagnosis of prostate cancer with correlation of the results with the results of biopsy.
This study was carried on 30 patients with clinically suspected prostate cancer (elevated PSA level and/or suspicious DRE). The mean age of cases was 67 years. 16 cases had prostate cancer and 14 cases had benign lesions.
All underwent MRI by a 1.5 Tesla scanner using T2WI and DWI with multiple b-values and ADC mapping for detection of prostate cancer. The diagnosis of prostate cancer was based on evidence of a hyperintense lesion on DWI and a hypointense lesion on ADC map. The images finding was correlated with biopsy results in all patients.
DWI successfully detected 12 cases of prostate cancer out of 16 cases (sensitivity 75%). The 4 false negative considered malignant according to results of biopsy.
The positive and negative predictive values for DWI were 100% and 77.8%, respectively.