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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
6
|
pubmed:dateCreated |
1990-7-12
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pubmed:abstractText |
To determine whether technetium-99m-hexakis-2-methoxyisobutyl isonitrile (SESTAMIBI) remains fixed in the myocardium following its initial uptake or undergoes time-related redistribution, anesthetized dogs underwent occlusion of the anterior descending coronary artery for 6 min, followed by 3-hr reperfusion. Technetium-99m-SESTAMIBI and thallium-201 (201Tl) were injected intravenously after 1 min occlusion and regional myocardial blood flow was measured with radioactive microspheres. Tomographic imaging of Tc-SESTAMIBI revealed a perfusion defect with slight but definite filling in over 2 hr. Quantitative analysis indicated a significant rise in the nadir and decrease in the width of the defect in circumferential profile curves. After 3-hr of reperfusion, Tc-SESTAMIBI activity in the previously ischemic area was always greater than the activity of microspheres injected during coronary occlusion (mean normalized values, 0.32 versus 0.11, p less than 0.0001). Our results indicate that following transient ischemia and reperfusion, Tc-SESTAMIBI clearly undergoes myocardial redistribution, although more slowly and less completely than 201Tl.
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pubmed:grant | |
pubmed:language |
eng
|
pubmed:journal | |
pubmed:citationSubset |
IM
|
pubmed:chemical | |
pubmed:status |
MEDLINE
|
pubmed:month |
Jun
|
pubmed:issn |
0161-5505
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pubmed:author | |
pubmed:issnType |
Print
|
pubmed:volume |
31
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
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pubmed:pagination |
1069-76
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pubmed:dateRevised |
2007-11-14
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pubmed:meshHeading |
pubmed-meshheading:2140856-Animals,
pubmed-meshheading:2140856-Coronary Disease,
pubmed-meshheading:2140856-Dogs,
pubmed-meshheading:2140856-Female,
pubmed-meshheading:2140856-Male,
pubmed-meshheading:2140856-Myocardial Reperfusion,
pubmed-meshheading:2140856-Myocardium,
pubmed-meshheading:2140856-Organotechnetium Compounds,
pubmed-meshheading:2140856-Technetium Tc 99m Sestamibi,
pubmed-meshheading:2140856-Thallium Radioisotopes
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pubmed:year |
1990
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pubmed:articleTitle |
Myocardial redistribution of technetium-99m-methoxyisobutyl isonitrile (SESTAMIBI).
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pubmed:affiliation |
Department of Medicine, Johns Hopkins Medical Institutions, Baltimore, Maryland.
|
pubmed:publicationType |
Journal Article,
Comparative Study,
Research Support, U.S. Gov't, P.H.S.,
Research Support, Non-U.S. Gov't
|