When there is Diffusion Restriction, DW-MRI gives a bright signal and has low apparent Diffusion Coefficient(ADC value). Lesions showing Diffusion Restriction Infarct(Acute Infarct)- IOC Abscess Medulloblastoma & Other Cellularity Tumours Epidermoid Cyst There is free diffusion of water within arachnoid cysts therefore DW-MRI is useful to differentiate b/w arachnoid and epidermoid cyst. Clinical history not suppoive of Migraine. Option D: Multiple sclerosis shows Dawson's fingers.