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Cerebral hemodynamics in arteriovenous malformations: evaluation by single-photon emission CT

Journal Article · · AJNR, Am. J. Neuroradiol.; (United States)
OSTI ID:6522307
; ; ; ; ; ; ;
Cerebral hemodynamics in six patients with supratentorial arteriovenous malformations (AVMs) were studied by using single-photon emission CT with three types of radioactive isotopes: N-isopropyl-p-(/sup 123/I) iodoamphetamine, /sup 81m/Kr, and /sup 99m/Tc-RBC in order to determine the local cerebral blood flow and blood volume associated with these malformations. The AVMs were shown to have high flow while other areas of the brain, including the contralateral hemisphere, had variable areas of diminished perfusion. There was increased blood volume in the regions of AVMs, and poor but evenly distributed blood volume in the other regions. CO/sub 2/ reactivity during hypocapnia was preserved throughout the brain except for the region of the AVMs. In large AVMs, the ischemic state surrounding the nidus was considered to be caused mainly by the cerebral steal phenomenon.
Research Organization:
National Cardiovascular Center, Osaka, Japan
OSTI ID:
6522307
Journal Information:
AJNR, Am. J. Neuroradiol.; (United States), Journal Name: AJNR, Am. J. Neuroradiol.; (United States) Vol. 2; ISSN AAJND
Country of Publication:
United States
Language:
English

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Related Subjects

550601* -- Medicine-- Unsealed Radionuclides in Diagnostics
62 RADIOLOGY AND NUCLEAR MEDICINE
AMPHETAMINES
ANALEPTICS
ARTERIES
AUTONOMIC NERVOUS SYSTEM AGENTS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BIOLOGICAL MATERIALS
BLOOD
BLOOD CELLS
BLOOD COUNT
BLOOD FLOW
BLOOD VESSELS
BODY
BODY FLUIDS
BRAIN
CARDIOVASCULAR DISEASES
CARDIOVASCULAR SYSTEM
CENTRAL NERVOUS SYSTEM
CENTRAL NERVOUS SYSTEM AGENTS
COMPUTERIZED TOMOGRAPHY
DIAGNOSIS
DIAGNOSTIC TECHNIQUES
DISEASES
DRUGS
ELECTRON CAPTURE RADIOISOTOPES
EMISSION COMPUTED TOMOGRAPHY
ERYTHROCYTES
EVEN-ODD NUCLEI
HOURS LIVING RADIOISOTOPES
INTERMEDIATE MASS NUCLEI
IODINE 123
IODINE ISOTOPES
ISCHEMIA
ISOMERIC NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
KRYPTON 81
KRYPTON ISOTOPES
MALFORMATIONS
MATERIALS
NERVOUS SYSTEM
NUCLEI
ODD-EVEN NUCLEI
ORGANS
PATHOLOGICAL CHANGES
PATIENTS
PERFUSED ORGANS
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
SINGLE PHOTON EMISSION COMPUTED TOMOGRAPHY
SYMPATHOMIMETICS
TECHNETIUM 99
TECHNETIUM ISOTOPES
TOMOGRAPHY
VASCULAR DISEASES
VEINS
YEARS LIVING RADIOISOTOPES