LIVING ART ENTERPRISES, LLC / SCIENCE PHOTO LIBRARY LIVING ART ENTERPRISES, LLC / SCIENCE PHOTO LIBRARY
This axial (cross sectional) T1 weighted MRI image of a person with long standing multiple sclerosis shows multiple well demarcated hypointense (darker) lesions in both cerebral hemispheres representing chronic demyelinating lesions. Multiple sclerosis is a demyelinating disorder of uncertain etiology.
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