RADIOPHARMACEUTICAL: 99mTc ECD, 714 MBq
These studies show severe hypoperfusion in the left posterior frontal and anterior temporal lobes along the Sylvian fissure as well as in the left superior temporal gyrus. Similar but milder lesions are seen in the right cerebral hemisphere. No definite abnormality is seen in the precuneus posterior cingulate regions. There is also hypoperfusion of the basal ganglia and midbrain but not the cerebellum.