Oh cool -- that means you can travel to other dimensions! (You may have to first use a lot of medical marijuana though! 😁)

Seriously, rather than my lame attempts at humor, the MS-specializing expert neurologist Dr. Boster has some videos where he explains black holes here: ( https://www.youtube.com/channel/UCkQopiiFbAo0zS...).

They are T1 hypointense lesions on the mri

'Black holes, also known as T1-hypointense lesions, are a marker of axonal loss and neuronal tissue destruction in patients with multiple sclerosis (MS). Studies suggest that black holes are associated with worse cognitive function, including processing speed and visuospatial memory, but not with physical function. Evaluating black holes as part of routine clinical practice could be a quick method for screening people with MS for referral to a comprehensive cognitive assessment.1 Black hole boundaries often have low contrast and are difficult to determine accurately, and most segmentation methods first compute the T2-hyperintense lesions, which are typically more distinct, to form a search space for the T1w lesions.0 T1 recovery is predominantly found in black holes and is associated with better clinical scores. Black holes, also known as T1-hypointense lesions, are a marker of axonal loss and neuronal tissue destruction in patients with multiple sclerosis (MS). Studies suggest that black holes are associated with worse cognitive function, including processing speed and visuospatial memory, but not with physical function. Evaluating black holes as part of routine clinical practice could be a quick method for screening people with MS for referral to a comprehensive cognitive assessment.1 Black hole boundaries often have low contrast and are difficult to determine accurately, and most segmentation methods first compute the T2-hyperintense lesions, which are typically more distinct, to form a search space for the T1w lesions.0 T1 recovery is predominantly found in black holes and is associated with better clinical scores.2'

Alright then....