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Titolo: Optimal rotational interval for 3dimensional echocardiography data acquisition for rapid and accurate measurement of left ventricular function
Autore: Nosir, YFM; Vletter, WB; Kasprzak, JD; Boersma, E; Lequin, MH; Elhendy, AA; Yao, JF; Stoker, J; Ten Cate, FJ; Roelandt, JRTC;
 Indirizzi:
 Ctr Heart, Thoraxctr, NL3015 GD Rotterdam, Netherlands Ctr Heart Rotterdam Netherlands NL3015 GD 015 GD Rotterdam, Netherlands Erasmus Univ, NL3015 GD Rotterdam, Netherlands Erasmus Univ Rotterdam Netherlands NL3015 GD GD Rotterdam, Netherlands Al Azhar Univ, Al Hussein Univ Hosp, Dept Cardiol, Cairo, Egypt Al Azhar Univ Cairo Egypt Hussein Univ Hosp, Dept Cardiol, Cairo, Egypt
 Titolo Testata:
 JOURNAL OF THE AMERICAN SOCIETY OF ECHOCARDIOGRAPHY
fascicolo: 8,
volume: 13,
anno: 2000,
pagine: 715  722
 SICI:
 08947317(200008)13:8<715:ORIF3E>2.0.ZU;2E
 Fonte:
 ISI
 Lingua:
 ENG
 Soggetto:
 EJECTION FRACTION; VOLUME; RECONSTRUCTION; VALIDATION;
 Tipo documento:
 Article
 Natura:
 Periodico
 Settore Disciplinare:
 Clinical Medicine
 Citazioni:
 29
 Recensione:
 Indirizzi per estratti:
 Indirizzo: Nosir, YFM Ctr Heart, Thoraxctr, Ba 302,Dr Molewaterplein 40, NL3015 GD Rotterdam, Netherlands Ctr Heart Ba 302,Dr Molewaterplein 40 Rotterdam Netherlands NL3015 GD



 Citazione:
 Y.F.M. Nosir et al., "Optimal rotational interval for 3dimensional echocardiography data acquisition for rapid and accurate measurement of left ventricular function", J AM S ECHO, 13(8), 2000, pp. 715722
Abstract
Background: Prolonged Sdimensional echocardiography (3DE) acquisition time currently limits its routine use for calculating left ventricular volume (LVV) and ejection fraction (EF). Our goal was to reduce the acquisition time by defining the largest rotational acquisition interval that still allows 3DE reconstruction for accurate and reproducible LVV and EF calculation. Methods: Twentyone subjects underwent magnetic resonance imaging and precordial 3DE with 2 degrees acquisition intervals. Images were processed to result in data sets containing images at 2 degrees, 4 degrees, 8 degrees, 16degrees, 32 degrees, and 64 degrees intervals by excluding images in between. With use of the paraplane feature, 8 equidistant shortaxis slices weregenerated from each data set. The suitability of these shortaxis slices for manual endocardial tracing was scored visually by 4 independent experienced observers. The LVV and EF were calculated by using Simpson's rule from 3DE data sets with 2 degrees, 8 degrees, and 16 degrees intervals, and the results were compared with values obtained from magnetic resonance imaging. The probability of 3DE to detect LVV and EF differences was calculated. Results: All patients were in sinus rhythm with a mean heart rate of 72 bpm (SD +/ 12). The LV shortaxis images obtained with 16 degrees rotationalscanning intervals allowed LV endocardial tracing in all subjects. Good correlation, close limits of agreement, and nonsignificant differences were found between values of LVV and EF calculated with 3DE at 2 degrees, 8 degrees, and 16 degrees rotational intervals and those obtained with magnetic resonance Imaging. At steps of 16 degrees, 3DE had excellent correlation (r =98, 99, and 99), close limits of agreement (+/38, +/28.6, and +/4.8), and nonsignificant differences (P = .5, .8, and .2) with values obtained from magnetic resonance imaging for calculating enddiastolic LVV, endsystolic LVV, and EF, respectively. Threedimensional echocardiography with use of16 degrees rotational intervals could detect 15mL differences in enddiastolic volume with a probability of 95%, 11mL differences in endsystolic volume with a probability of 92%, and 0.02 differences in. EF with a probability of 95%. Conclusions: The 3DE data sets reconstructed with images selected at 16 degrees intervals from data sets obtained at 20 precordial rotational acquisition intervals allowed the generation of LV shortaxis images with adequatequality for endocardial bordertracing. Therefore precordial acquisition at 16 degrees intervals would be sufficient for the reconstruction of 3DE data sets for LV function measurement. This would reduce the acquisition timewhile maintaining enough accuracy for clinical decision making and would thus make 3DE more practical as a routine method.
ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/11/20 alle ore 20:05:02