Cerebral hemodynamics in normal-pressure hydrocephalus. Evaluation by 133Xe inhalation method and dynamic CT study

Journal Article · Sat Sep 01 04:00:00 EDT 1984 · J. Neurosurg.; (United States)

DOI:https://doi.org/10.3171/jns.1984.61.3.0510· OSTI ID:6757005

Tamaki, N; Kusunoki, T; Wakabayashi, T; Matsumoto, S

Cerebral hemodynamics in 31 patients with suspected normal-pressure hydrocephalus were studied by means of the xenon-133 (133Xe) inhalation method and on dynamic computerized tomography (CT) scanning. Cerebral blood flow (CBF) is reduced in all patients with dementia. Hypoperfusion was noted in a frontal distribution in these patients compared with normal individuals. There was no difference in CBF patterns between patients with good and those with poor outcome. The CBF was increased following cerebrospinal fluid (CSF) shunting in patients who responded to that procedure: increase in flow correlated with clinical improvement, frontal and temporal lobe CBF was most markedly increased, and the CBF pattern became normal. In contrast, CBF was decreased after shunt placement in patients who were considered to have suffered from degenerative dementia, as evidenced by non-response to shunting. Dynamic computerized tomography studies demonstrated that patients with a good outcome showed a postoperative reduction in mean transit time of contrast material, most prominent in the frontal and temporal gray matter, and slight in the deep frontal structures, but not in the major cerebral vessels. Patients with poor outcome after shunting, however, had an increase in transit time in all regions. This corresponded well with the results as determined by the 133Xe inhalation method.

• Research Organization: Department of Neurosurgery, Kobe University School of Medicine, Japan
• OSTI ID: 6757005
• Journal Information: J. Neurosurg.; (United States), Journal Name: J. Neurosurg.; (United States) Vol. 61:3; ISSN JONSA
• Country of Publication: United States
• Language: English

Related Subjects

550601* -- Medicine-- Unsealed Radionuclides in Diagnostics
62 RADIOLOGY AND NUCLEAR MEDICINE
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BIOLOGICAL MATERIALS
BLOOD FLOW
BODY
BODY AREAS
BODY FLUIDS
BRAIN
CENTRAL NERVOUS SYSTEM
CEREBROSPINAL FLUID
COMPUTERIZED TOMOGRAPHY
CONGENITAL MALFORMATIONS
DAYS LIVING RADIOISOTOPES
DIAGNOSTIC TECHNIQUES
EVEN-ODD NUCLEI
HEAD
INHALATION
INTAKE
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MALFORMATIONS
MATERIALS
NERVOUS SYSTEM
NUCLEI
ORGANS
PATHOLOGICAL CHANGES
PATIENTS
PRESSURE MEASUREMENT
RADIOISOTOPES
TOMOGRAPHY
XENON 133
XENON ISOTOPES