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Titolo: Paraplane analysis from precardial threedimensional echocardiographic data sets for rapid and accurate quantification of left ventricular volume andfunction: A comparison with magnetic resonance imaging
Autore: Nosir, YFM; Stoker, J; Kasprzak, JD; Lequin, MH; DallAgata, A; Ten Cate, FJ; Roelandt, JRTC;
 Indirizzi:
 ErasmusNetherlands Dijkzigt, Thoraxctr, Div Cardiol, NL3015 GD Rotterdam,Erasmus Univ Rotterdam Netherlands NL3015 GD iol, NL3015 GD Rotterdam, Erasmus Univ, Hosp Dijkzigt, Dept Radiol, NL3015 GD Rotterdam, Netherlands Erasmus Univ Rotterdam Netherlands NL3015 GD GD Rotterdam, Netherlands Al Azhar Univ, Al Hussein Hosp, Dept Cardiol, Cairo, Egypt Al Azhar Univ Cairo Egypt , Al Hussein Hosp, Dept Cardiol, Cairo, Egypt
 Titolo Testata:
 AMERICAN HEART JOURNAL
fascicolo: 1,
volume: 137,
anno: 1999,
pagine: 134  143
 SICI:
 00028703(199901)137:1<134:PAFPTE>2.0.ZU;2Q
 Fonte:
 ISI
 Lingua:
 ENG
 Soggetto:
 INVIVO VALIDATION; EJECTION FRACTION; 3DIMENSIONAL ECHOCARDIOGRAPHY; MYOCARDIALINFARCTION; RECONSTRUCTION; ANGIOGRAPHY; MORTALITY;
 Tipo documento:
 Article
 Natura:
 Periodico
 Settore Disciplinare:
 Clinical Medicine
 Life Sciences
 Citazioni:
 29
 Recensione:
 Indirizzi per estratti:
 Indirizzo: Nosir, YFM Erasmus40,iv, Hosp Dijkzigt, Thoraxctr, Div Cardiol, Ba 302,Molewaterplein Erasmus Univ Ba 302,Molewaterplein 40 Rotterdam Netherlands NL3015 GD



 Citazione:
 Y.F.M. Nosir et al., "Paraplane analysis from precardial threedimensional echocardiographic data sets for rapid and accurate quantification of left ventricular volume andfunction: A comparison with magnetic resonance imaging", AM HEART J, 137(1), 1999, pp. 134143
Abstract
Objectives Threedimensional echocardiography (3DE) calculates left ventricular volumes (LW) and ejection fraction (EF) without geometric assumptions, but prolonged analysis time limits its routine use. This study was designed to validate a modified 3DE method for rapid and accurate LW and EF calculation compared with magnetic resonance imaging (MRI). Methods Forty subjects included 15 normal volunteers (group A) and 25 patients with segmental wall motion abnormalities and global hypokinesis causedby ischemic heart disease (group B) who underwent 3DE with precordial rotational acquisition technique (2degree interval with electrocardiographic and respiratory gating) and MRI at 0.5 T, electrocardiogram (ECG)triggered multislice multiphase T1weighted fast field echo. Enddiastolic and endsystolic LVV and EF were calculated from both techniques with Simpson's rule by manual endocardial tracing of equidistant parallel left ventricular shortaxis slices. Slicing from the 3DE data sets were done by both 2.9mm slice thickness (method 3DEA) and by 8 equidistant shortaxis slices (method 3DEB); for MRI analysis, 9mm slice thickness was used. Results Analysis time required for manual endocardial tracing of enddiastolic and endsystolic shortaxis slices was 10 minutes for the 3DEB methodcompared with 40 minutes by the 3DEA method. For all 40 subjects the mean+/ SD of enddiastolic LVV (ml) were 181 +/ 76, 179 +/ 73, and 182 +/ 76; for endsystolic LW (ml), 120 +/ 76, 120 +/ 75, and 122 +/ 77; and for EF (%), 39 +/ 18, 38 +/ 18, and 38 +/ 18 for MRI, SDEA, and 3DEB methods, respectively. The differences between 3DEA and 3DEB with MRI for calculating enddiastolic and endsystolic LVV and EF were not significant for the whole group of subjects as well as for the subgroups. The 3DEB method had excellent correlation and close limits of agreement with MRI for calculating enddiastolic and endsystolic LW and EF: r = 0.98 (1.3 +/ 26.6),0.99 (1.6 +/ 21.2), and 0.99 (0.2 +/ 5.2), respectively. The correlation between 3DEA and MRI were r = 0.97 0.98, and 0.98, and the limits of agreement were 1.4 +/ 36, 0.6 +/ 26, and 0.6 +/ 8 for calculating enddiastolic and endsystolic LW and EF, respectively. In addition, excellent correlation and close limits of agreement between 3DEA and 3DEB with MRI forLW and EF calculation was also found for the subgroups. Intraobserver and interobserver variability (SEE) of MRI for calculating enddiastolic and enddiastolic LVV and EF were 6.3, 4.7 and 2.1 and 13.6, 11.5, and 4.7; respectively, whereas that for 3DEB were 3.1, 4.4, and 2.2; and 6.2, 3.8, and 3.6; respectively. Comparable observer variability was also found for the A and B subgroups. Conclusions The 3DEA and 3DEB methods have excellent correlation and close limits of agreement with MRI for calculating LVV and EF in both normal subjects and cardiac patients. The 3DEB method by paraplane analysis with 8equidistant shortaxis slices has observer variability similar to MRI and reduces the 3DE analysis time to 10 minutes, therefore offering a rapid, reproducible, and accurate method for LVV and EF calculation.
ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/12/20 alle ore 06:26:45