Premium
Reference ranges of atrioventricular valve areas by means of four‐dimensional ultrasonography using spatiotemporal image correlation in the rendering mode
Author(s) -
Rolo Liliam Cristine,
Nardozza Luciano Marcondes Machado,
Araujo Edward,
Hatanaka Alan Roberto,
Rocha Luciane Alves,
Simioni Christiane,
Moron Antonio Fernandes
Publication year - 2013
Publication title -
prenatal diagnosis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.956
H-Index - 97
eISSN - 1097-0223
pISSN - 0197-3851
DOI - 10.1002/pd.4009
Subject(s) - intraclass correlation , reproducibility , atrioventricular valve , medicine , tricuspid valve , ultrasound , correlation coefficient , fetal echocardiography , fetus , nuclear medicine , concordance correlation coefficient , ventricle , anatomy , radiology , cardiology , pregnancy , mathematics , prenatal diagnosis , statistics , genetics , biology
ABSTRACT Objective This study aims to determine reference curves for fetal atrioventricular valve areas by means of three‐dimensional ultrasound using the spatiotemporal image correlation (STIC) software. Methods This was a cross‐sectional prospective study on 328 normal fetuses between the 18th and the 33rd weeks of pregnancy. In order to obtain valve areas, the four heart chambers plane was used with the fetus in a dorsal posterior position. To construct reference ranges, a linear regression model was used, adjusted according to the coefficient of determination ( R 2 ). To calculate the reproducibility of the tricuspid valve area, the intraclass coefficient correlation (ICC) was used. Results The mean areas of the tricuspid and mitral valves ranged from 0.19 ± 0.08 and 0.20 ± 0.10 cm 2 in the 18th week to 0.93 ± 0.31 and 1.06 ± 0.39 cm 2 in the 33rd week, respectively. The intra‐observer and interobserver reproducibility was excellent with ICC = 0.997 and 0.933, respectively. Conclusions Reference curves for fetal atrioventricular valve areas were determined and presented good reproducibility. © 2012 John Wiley & Sons, Ltd.