Analysis of the gamma ray spectra recorded in the use of /sup 133/Xe for cerebral blood flow studies
Journal Article
·
· Stroke; (United States)
OSTI ID:6656343
A problem in the measurement of cerebral blood flow with /sup 133/Xe is the presence of extra-cerebral counts in the total counts recorded with a collimated gamma ray detector looking at the brain. A method of studying qualitatively the contribution of this extra-cranial component in patients is described. This entails the sequential accumulation of gamma ray spectra recorded during the clearance phase of /sup 133/Xe from the brain. It is shown that different CBF indices are obtained for various regions of the recorded gamma ray spectra. The principal component of the extra-cerebral counts at 15 minutes postinjection appears to be intra-cranial, and not the scalp as assumed previously in the spectrum subtraction method.
- Research Organization:
- Department of Radiation Physics, Churchill Hospital, Oxford, England
- OSTI ID:
- 6656343
- Journal Information:
- Stroke; (United States), Journal Name: Stroke; (United States) Vol. 13:4; ISSN SJCCA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
550601* -- Medicine-- Unsealed Radionuclides in Diagnostics
550901 -- Pathology-- Tracer Techniques
59 BASIC BIOLOGICAL SCIENCES
62 RADIOLOGY AND NUCLEAR MEDICINE
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BLOOD FLOW
BODY
BRAIN
CENTRAL NERVOUS SYSTEM
CEREBRUM
COUNTING TECHNIQUES
DAYS LIVING RADIOISOTOPES
DIAGNOSTIC TECHNIQUES
DIAGNOSTIC USES
ELECTROMAGNETIC RADIATION
EVEN-ODD NUCLEI
GAMMA RADIATION
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
IONIZING RADIATIONS
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
NERVOUS SYSTEM
NUCLEI
ORGANS
PATIENTS
PHYSIOLOGY
RADIATIONS
RADIOISOTOPE SCANNING
RADIOISOTOPES
SCINTISCANNING
USES
XENON 133
XENON ISOTOPES
550901 -- Pathology-- Tracer Techniques
59 BASIC BIOLOGICAL SCIENCES
62 RADIOLOGY AND NUCLEAR MEDICINE
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BLOOD FLOW
BODY
BRAIN
CENTRAL NERVOUS SYSTEM
CEREBRUM
COUNTING TECHNIQUES
DAYS LIVING RADIOISOTOPES
DIAGNOSTIC TECHNIQUES
DIAGNOSTIC USES
ELECTROMAGNETIC RADIATION
EVEN-ODD NUCLEI
GAMMA RADIATION
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
IONIZING RADIATIONS
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
NERVOUS SYSTEM
NUCLEI
ORGANS
PATIENTS
PHYSIOLOGY
RADIATIONS
RADIOISOTOPE SCANNING
RADIOISOTOPES
SCINTISCANNING
USES
XENON 133
XENON ISOTOPES