A cerebral positron CT system (Positologica) was used for obtaining tomographic brain images following intravenous injection of 13N-ammonia and inhalation of 11C-carbon monoxide. The images of normal volunteers revealed a high accumulation of 13NH 3 in gray matter and a slight uptake of 13NH 3 in white matter. The images of a patient with cerebral infarction revealed a high accumulation of 13NH 3 in the lesion. These findings probably depict the 'luxury-perfusion syndrome'. Large vascular structures of the brain were clearly seen in tomographic positron images with 11CO gas. From these preliminary clincal studies, it is suggested that the positron CT images with 13NH 3 and 11CO provided important diagnostic information about cerebral hemodynamics.
|Number of pages||4|
|Publication status||Published - 1980|
ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging