Diffusion weighted imaging is now routine sequence in the MR imaging of the brain and is now the important sequence in evaluating acute ischemic brain injury patients. However high signal intensity on diffusion MR and hypointensity on apparent diffusion coefficient images (ADC), have been reported in other conditions like abscess / tumor. Differentiating between these conditions is required for determination of appropriate diagnosis and treatment. We are presenting a systematic review of our study of hyperintense lesions on diffusion weighted MR imaging in 100 patients and their potential in clinical imaging and application.
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Patient with acute onset of right side weakness. T2W MR image shows flow voids in insular cortex without any significant signal change in the cortex. Diffusion weighted imaging clearly depicts acute infarction in left MCA territory