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Amyloid Intracerebral Hemorrhage - Case 1

An 88 year-old man presented with confusion and left sided weakness.

Show the Dark Rim of Hemosiderin  Note the Bright Signal of Methemoglobin  Show the Vasogenic Edema  Note Another Old Hemorrhage on the Left Side

Lobar Intracerebral Hemorrhage from Amyloid Angiopathy: T2-weighted axial MRIs. Note the large subacute hemorrhage in the right frontoparietal lobe. The black rim is hemosiderin, the bright white interior is methemoglobin and the surrounding white area is vasogenic edema. In this case, the hemorrhage was due to amyloid. Amyloid associated intracerebral hemorrhage is common in very elderly individuals and often occurs as a lobar hemorrhage, though subcortical hemorrhage can also be seen.

The characteristics of blood on MRI are complex and depend on timing. To learn more, review the powerpoint slide show, Blood on MRI: Time-dependent Changes.

Revised 11/29/06.
Copyrighted 2006. David C Preston