Left ventricular eccentricity index measured with SPECT myocardial perfusion imaging: An additional parameter of adverse cardiac remodeling View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2017-01-12

AUTHORS

Alessia Gimelli, Riccardo Liga, Alberto Clemente, Gavino Marras, Annette Kusch, Paolo Marzullo

ABSTRACT

BACKGROUND: Single-photon emission computed-tomography (SPECT) allows the quantification of LV eccentricity index (EI), a measure of cardiac remodeling. We sought to evaluate the feasibility of EI measurement with SPECT myocardial perfusion imaging and its interactions with relevant LV functional and structural parameters. METHODS AND RESULTS: Four-hundred and fifty-six patients underwent myocardial perfusion imaging on a Cadmium-Zinc-Telluride (CZT) camera. The summed rest, stress, and difference scores were calculated. From rest images, the LV end-diastolic (EDV) and end-systolic volumes, ejection fraction (EF), and peak filling rate (PFR) were calculated. In every patient, the EI, ranging from 0 (sphere) to 1 (line), was computed using a dedicated software (QGS/QPS; Cedars-Sinai Medical Center). Three-hundred and thirty-eight/456 (74%) patients showed a normal EF (>50%), while 26% had LV systolic dysfunction. The EI was computed from CZT images with excellent reproducibility (interclass correlation coefficient: 0.99, 95% CI 0.98-0.99). More impaired EI values correlated with the presence of a more abnormal LV perfusion (P < .001), function (EF and PFR, P < .001), and structure (EDV, P < .001). On multivariate analysis, higher EDV (P < .001) and depressed EF (P = .014) values were independent predictors of abnormal EI. CONCLUSIONS: The evaluation of LV eccentricity is feasible on gated CZT images. Abnormal EI associates with significant cardiac structural and functional abnormalities. More... »

PAGES

1-9

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URI

http://scigraph.springernature.com/pub.10.1007/s12350-017-0777-3

DOI

http://dx.doi.org/10.1007/s12350-017-0777-3

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https://app.dimensions.ai/details/publication/pub.1017933697

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/28083831


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