Abnormal resting regional cerebral blood flow patterns and their correlates in schizophrenia
Regional cerebral blood flow (CBF) was measured under resting conditions in 108 right-handed schizophrenic inpatients and a matched group of normal controls with the xenon 133 inhalation technique. Forty-six patients were free of all medication for two weeks. There were no significant differences in CBF to the two hemispheres. The patients showed a comparatively reduced anteroposterior (AP) gradient for CBF. Though there were no differences in frontal flow, the patients had higher flow to several postcentral brain regions, bilaterally. Cerebral blood flow in the patients correlated inversely with age and positively with carbon dioxide level. Women had higher flow than men. Duration of the illness was the only significant predictor of the reduced AP gradient in patients. Higher left temporal and right parietal flow were found to be the best discriminators between patients and controls. Mean hemispheric flow to both hemispheres and several brain regions correlated with the total score and the item, unusual thought content, of the Brief Psychiatric Rating Scale. There were no differences in regional CBF between medicated and unmedicated patients.
- Research Organization:
- Duke Univ. Medical Center, Durham, NC (USA)
- OSTI ID:
- 6908433
- Journal Information:
- Arch. Gen. Psychiatr.; (United States), Vol. 45:6
- Country of Publication:
- United States
- Language:
- English
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BRAIN
BLOOD FLOW
NERVOUS SYSTEM DISEASES
PATHOGENESIS
AGE DEPENDENCE
BLOOD PRESSURE
CARBON DIOXIDE
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SEX DEPENDENCE
TRACER TECHNIQUES
XENON 133
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BODY
CARBON COMPOUNDS
CARBON OXIDES
CENTRAL NERVOUS SYSTEM
CHALCOGENIDES
DAYS LIVING RADIOISOTOPES
DISEASES
EVEN-ODD NUCLEI
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPE APPLICATIONS
ISOTOPES
NERVOUS SYSTEM
NUCLEI
ORGANS
OXIDES
OXYGEN COMPOUNDS
RADIOISOTOPES
XENON ISOTOPES
550901* - Pathology- Tracer Techniques