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Titolo:
Unbiased and efficient estimation of left ventricular volumes by three-dimensional echocardiography with coaxial sections. Validation with magnetic resonance imaging
Autore:
Kim, WY; Terp, KA; Nyengaard, JR; Silkjaer, T; Jensen, FT;
Indirizzi:
Aarhus Univ Hosp, Skejby Sygehus, Dept Cardiothorac & Vasc Surg, Aarhus, Denmark Aarhus Univ Hosp Aarhus Denmark rdiothorac & Vasc Surg, Aarhus, Denmark
Titolo Testata:
HEART AND VESSELS
fascicolo: 1, volume: 15, anno: 2000,
pagine: 35 - 43
SICI:
0910-8327(2000)15:1<35:UAEEOL>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
3-DIMENSIONAL ECHOCARDIOGRAPHY; 2-DIMENSIONAL ECHOCARDIOGRAPHY; EJECTION FRACTION; STEREOLOGY; MODEL; ECHO;
Keywords:
three-dimensional echocardiography; magnetic resonance imaging; left ventricular volume; stereology;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
21
Recensione:
Indirizzi per estratti:
Indirizzo: Kim, WY Beth Israel Deaconess Med Ctr, Div Cardiovasc, Cardiac MR Ctr, 330Brookline Ave, Boston, MA 02215 USA Beth Israel Deaconess Med Ctr 330 Brookline Ave Boston MA USA 02215
Citazione:
W.Y. Kim et al., "Unbiased and efficient estimation of left ventricular volumes by three-dimensional echocardiography with coaxial sections. Validation with magnetic resonance imaging", HEART VESS, 15(1), 2000, pp. 35-43

Abstract

The objective of this study was to investigate the degree of bias with coaxial three-dimensional echocardiography in an experimental animal setup andto establish the minimum number of sections needed for estimation of left ventricular (LV) volume. Epicardial coaxial echocardiography and magnetic resonance imaging (MRI) was used to measure LV volume in 14 pigs, with chronic remodeled left ventricles induced by repeated intracoronary microembolizations. In addition, six animals underwent serial MRI at baseline, immediately after intracoronary microembolization. and after 119-165 days (mean 129days). Coaxial echocardiography was performed by rotational acquisition oflong-axis sections starting from an arbitrary angle. Planimetered MRI contours of LV endocardial borders were analyzed to investigate the relationship between the number of coaxial sections, and the precision of volume estimates. The mean +/- 2SD of the differences between coaxial epicardial echocardiography with six sections and MRI were -2.5 +/- 16.4 ml, 0.8 +/- 13.1 ml, and 2% +/- 14% for end-diastolic volume (EDV), end-systolic volume (ESV),and ejection fraction (EF)I respectively. Numerical analysis conducted on MRI contours of LV endocardial borders showed that with six coaxial sections the average coefficient of error was <1% for the EDV and ESV. Three-dimensional echocardiography with six coaxial sections provides unbiased LV volume estimation with minimal geometric error.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/11/20 alle ore 11:04:59