Matches in SemOpenAlex for { <https://semopenalex.org/work/W1995412973> ?p ?o ?g. }
Showing items 1 to 86 of
86
with 100 items per page.
- W1995412973 endingPage "1056" @default.
- W1995412973 startingPage "1048" @default.
- W1995412973 abstract "The purpose of this study was to validate a semiautomatic method for quantitating the size of relative myocardial perfusion defects from single-photon emission computed tomographic (SPECT) images. We compared the size of the image defect in vivo, expressed as percent of involved left ventricle, as determined by this method with the anatomic size of the defect in vitro in 19 dogs. To test the method under optimal conditions, we first labeled the left ventricular myocardium in nine dogs by left atrial injection of 99mTc-labeled macroaggregated albumin particles after acute occlusion of one coronary artery. The defect volume was defined as the volume of the left ventricular myocardium for which counts fell 2 or more SDs below the distribution of counts in the myocardium supplied by a normal coronary artery in a series of animals. The relative in vivo defect volume by SPECT occupied 26.46 +/- 12.7% of the left ventricular volume (mean +/- SD), compared with a relative defect size in vitro of 33.3 +/- 13.7% (p = NS) of left ventricular volume as determined by well counting of myocardial samples. There was a close correlation between the two measurements (r = .92). However, myocardial relative defect volumes involving less than 5% of myocardium were not identified by SPECT. The defect volume weighted for the relative reduction in flow within the defect zone or the relative reduced perfusion volume was also determined. The correlation between the estimates by SPECT and those made in vitro for relative reduced perfusion volume was also high (r = .94).(ABSTRACT TRUNCATED AT 250 WORDS)" @default.
- W1995412973 created "2016-06-24" @default.
- W1995412973 creator A5002247535 @default.
- W1995412973 creator A5044235202 @default.
- W1995412973 creator A5045726992 @default.
- W1995412973 creator A5049267221 @default.
- W1995412973 creator A5074133601 @default.
- W1995412973 date "1984-12-01" @default.
- W1995412973 modified "2023-10-12" @default.
- W1995412973 title "Quantitation of size of relative myocardial perfusion defect by single-photon emission computed tomography." @default.
- W1995412973 cites W1485728811 @default.
- W1995412973 cites W1995716955 @default.
- W1995412973 cites W1997033936 @default.
- W1995412973 cites W2016725533 @default.
- W1995412973 cites W2043511280 @default.
- W1995412973 cites W4168775 @default.
- W1995412973 doi "https://doi.org/10.1161/01.cir.70.6.1048" @default.
- W1995412973 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/6333939" @default.
- W1995412973 hasPublicationYear "1984" @default.
- W1995412973 type Work @default.
- W1995412973 sameAs 1995412973 @default.
- W1995412973 citedByCount "90" @default.
- W1995412973 countsByYear W19954129732013 @default.
- W1995412973 countsByYear W19954129732015 @default.
- W1995412973 countsByYear W19954129732016 @default.
- W1995412973 countsByYear W19954129732017 @default.
- W1995412973 countsByYear W19954129732019 @default.
- W1995412973 countsByYear W19954129732022 @default.
- W1995412973 countsByYear W19954129732023 @default.
- W1995412973 crossrefType "journal-article" @default.
- W1995412973 hasAuthorship W1995412973A5002247535 @default.
- W1995412973 hasAuthorship W1995412973A5044235202 @default.
- W1995412973 hasAuthorship W1995412973A5045726992 @default.
- W1995412973 hasAuthorship W1995412973A5049267221 @default.
- W1995412973 hasAuthorship W1995412973A5074133601 @default.
- W1995412973 hasBestOaLocation W19954129731 @default.
- W1995412973 hasConcept C121332964 @default.
- W1995412973 hasConcept C146957229 @default.
- W1995412973 hasConcept C150903083 @default.
- W1995412973 hasConcept C164705383 @default.
- W1995412973 hasConcept C20556612 @default.
- W1995412973 hasConcept C207001950 @default.
- W1995412973 hasConcept C2776820930 @default.
- W1995412973 hasConcept C2778064278 @default.
- W1995412973 hasConcept C2778921608 @default.
- W1995412973 hasConcept C2780441642 @default.
- W1995412973 hasConcept C2989005 @default.
- W1995412973 hasConcept C62520636 @default.
- W1995412973 hasConcept C71924100 @default.
- W1995412973 hasConcept C86803240 @default.
- W1995412973 hasConceptScore W1995412973C121332964 @default.
- W1995412973 hasConceptScore W1995412973C146957229 @default.
- W1995412973 hasConceptScore W1995412973C150903083 @default.
- W1995412973 hasConceptScore W1995412973C164705383 @default.
- W1995412973 hasConceptScore W1995412973C20556612 @default.
- W1995412973 hasConceptScore W1995412973C207001950 @default.
- W1995412973 hasConceptScore W1995412973C2776820930 @default.
- W1995412973 hasConceptScore W1995412973C2778064278 @default.
- W1995412973 hasConceptScore W1995412973C2778921608 @default.
- W1995412973 hasConceptScore W1995412973C2780441642 @default.
- W1995412973 hasConceptScore W1995412973C2989005 @default.
- W1995412973 hasConceptScore W1995412973C62520636 @default.
- W1995412973 hasConceptScore W1995412973C71924100 @default.
- W1995412973 hasConceptScore W1995412973C86803240 @default.
- W1995412973 hasIssue "6" @default.
- W1995412973 hasLocation W19954129731 @default.
- W1995412973 hasLocation W19954129732 @default.
- W1995412973 hasOpenAccess W1995412973 @default.
- W1995412973 hasPrimaryLocation W19954129731 @default.
- W1995412973 hasRelatedWork W2015465540 @default.
- W1995412973 hasRelatedWork W2021714027 @default.
- W1995412973 hasRelatedWork W2024932886 @default.
- W1995412973 hasRelatedWork W2035589940 @default.
- W1995412973 hasRelatedWork W2057242502 @default.
- W1995412973 hasRelatedWork W2095058262 @default.
- W1995412973 hasRelatedWork W2424400180 @default.
- W1995412973 hasRelatedWork W2782597321 @default.
- W1995412973 hasRelatedWork W4312631109 @default.
- W1995412973 hasRelatedWork W2129349091 @default.
- W1995412973 hasVolume "70" @default.
- W1995412973 isParatext "false" @default.
- W1995412973 isRetracted "false" @default.
- W1995412973 magId "1995412973" @default.
- W1995412973 workType "article" @default.