Abstract
Summary
1. The use of RIHSA in studies of cerebral disorders is presented. With a 200 μc dose of RIHSA wide individual variations in uptake at each position were observed. The patterns and the levels of uptake in normal individuals were similar to the patterns and levels of uptake observed in patients with general paresis. 2. The percentage differences in uptake at symmetrical positions in normal individuals and in patients with general paresis were similar. This percentage difference rarely exceeded 10%. In contrast with this patients with cerebral neoplasms, who showed an increased uptake at the site of the tumory showed differences in uptake from 12 to 50%.
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