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What is Radial Band sign on MRI Brain is seen in? and explain in detail?
*Radial bands are specific for the diagnosis of tuberous sclerosis and are usually best seen on T2 / FLAIR as linear regions of high signal extending form the ventricle to the coex. *Radial band sign is indicative of abnormal migration of dysplastic stem cells in patients with tuberous sclerosis complex. MRI axial FLAIR image showing radial bands (black veical down arrow), sub-ependymal nodule (thin black arrow) and coical tuber (white arrow) in a patient with TS. *Dawson Fingers-Multiple Sclerosis *Hot cross Bun sign-multisystem atrophy type c *Humming bird/penguin sign/mickey mouse sign -progressive supranuclear palsy