Objective: To evaluate the role conventional MRI diffusion weighted imaging with imaging in ring enhancing brain lesions. Methodology: Conventional MRI with Diffusion weighted imaging (DWI) was performed on 25 patients having ring enhancing lesions on their post-contrast brain MRI scans. These lesions were characterized into different aetiologias like neoplastic, infective, inflammatory and demyelination on the basis of diffusion restriction. Diffusion Weighted Imaging eased to some extent in differentiating these pathologies but is not totally specific again as there has been reports of atypical DWI of both abscess and tumours. So, the purpose of this study was to identify features of ring enhancing brain lesions in conventional and DWI MRI, and evaluate diagnostic accuracy of DWI. Comparisons of mean ADC values of abscess and neoplastic lesions were also done.