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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
1
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pubmed:dateCreated |
1990-2-16
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pubmed:abstractText |
To evaluate cerebral hemodynamics, 21 patients with chronic occlusion or severe stenosis of the internal carotid or middle cerebral artery with normal or only lacunar infarction on x-ray CT were studied using single photon emission computed tomography (SPECT). We measured rCBV with 99mTc erythrocytes after rCBF with 133Xe, and calculated rCBV/rCBF. rCBF and rCBV of the 25 affected hemispheres were classified as (a) patients with normal rCBF [type I (n = 7) and type II (n = 3)]; (b) patients with decreased rCBF [type III (n = 6) and type IV (n = 9)]. These two groups then could be subdivided according to findings of rCBV, normal, and increased blood volumes. rCBV/rCBF increased as the cerebral perfusion pressure dropped from type I to type III. In type IV, other situations but cerebral autoregulation could be assumed. rCBV/rCBF signifies vascular mean transit time. Type III (high rCBV/rCBF) assumed as the increased OEF, misery perfusion as reported in PET. We propose rCBF, rCBV and rCBV/rCBF using SPECT can be an index for cerebral circulatory reserve.
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pubmed:commentsCorrections | |
pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Jan
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pubmed:issn |
0161-5505
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
31
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pubmed:owner |
NLM
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pubmed:authorsComplete |
N
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pubmed:pagination |
55-60
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pubmed:dateRevised |
2004-11-17
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pubmed:meshHeading |
pubmed-meshheading:2295941-Arterial Occlusive Diseases,
pubmed-meshheading:2295941-Carotid Artery, Internal,
pubmed-meshheading:2295941-Carotid Artery Diseases,
pubmed-meshheading:2295941-Cerebral Arterial Diseases,
pubmed-meshheading:2295941-Cerebrovascular Circulation,
pubmed-meshheading:2295941-Erythrocytes,
pubmed-meshheading:2295941-Female,
pubmed-meshheading:2295941-Humans,
pubmed-meshheading:2295941-Male,
pubmed-meshheading:2295941-Middle Aged,
pubmed-meshheading:2295941-Technetium,
pubmed-meshheading:2295941-Tomography, Emission-Computed, Single-Photon,
pubmed-meshheading:2295941-Xenon Radioisotopes
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pubmed:year |
1990
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pubmed:articleTitle |
Cerebral hemodynamics in patients with chronic obstructive carotid disease by rCBF, rCBV, and rCBV/rCBF ratio using SPECT.
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pubmed:affiliation |
Department of Radiology, Fujita Health University School of Medicine, Toyoake, Japan.
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pubmed:publicationType |
Journal Article
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