Abstract:
We used PET to study patients with intracerebral hemorrhages in
the left hemisphere. Three anatomic and physiologic patterns were
observed. Patients 1 and 2 had midputamen hemorrhages with diffuse left
less than right hemispheric metabolic asymmetry most prominent in
temporal and parietal regions. Patients 3 and 4 had posterior
putamen-insula- temporal hemorrhages with left less than right metabolic
asymmetry in temporoparietal cortex and thalamus. Patients 5, 6, and 7
had smaller posterior hemorrhages. Left cortical metabolism was little
affected in these three cases. Persistent aphasia was associated with
severe metabolic left less than right asymmetry in posterior middle
temporal regions