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Title: Fetal lung volume in fetuses with urinary tract malformations: Comparison by 2D-, 3D-sonography and magnetic resonance imaging
Authors: Araujo Junior, Edward [UNIFESP]
De Oliveira, Patricia Soares [UNIFESP]
Machado Nardozza, Luciano Marcondes [UNIFESP]
Simioni, Christiane [UNIFESP]
Rolo, Liliam Cristine [UNIFESP]
Goldman, Susan Menasce [UNIFESP]
Szejnfeld, Jacob [UNIFESP]
Moron, Antonio Fernandes [UNIFESP]
Universidade Federal de São Paulo (UNIFESP)
Keywords: Fetal lung volume
two-dimensional ultrasonography
three-dimensional ultrasonography
magnetic resonance imaging
Issue Date: 1-Jan-2010
Publisher: Taylor & Francis Ltd
Citation: Journal of Maternal-fetal & Neonatal Medicine. Abingdon: Taylor & Francis Ltd, v. 23, n. 1, p. 60-68, 2010.
Abstract: Objective. To evaluate the concordance between two-dimensional ultrasonography (2DUS), three-dimensional ultrasonography (3DUS) and magnetic resonance imaging (MRI) in the assessment of lung volume in fetuses with urinary tract malformations (UTM).Methods. This was a cross-sectional study involving 12 pregnancies between 19 and 34 weeks, with various fetal UTM. Pulmonary volume was obtained by 2DUS using the following equation: total lung volume = [right lung antero-posterior diameter (X) x transverse diameter (Y) x cranial-caudal diameter x 0.152 + left lung (X1) x (Y1) x (Z1) x 0. 167]. Pulmonary volume by 3DUS was obtained using the virtual organ computer-aided analysis (VOCAL) method with a 30 degrees (VOL30), 18 degrees (VOL18) and 12 degrees (VOL12) rotation. A fast sequence of transverse lung section was also obtained by MRI. the intraclass correlation coefficient was used to evaluate the correlation between the three methods. the paired student t-test was used to compare the means.Results. There was a strong correlation between the three methods, and the highest correlations were between MRI and VOL18 for the right (ICC = 0.913) and left (ICC = 0.947) lungs. A strong correlation was also found between the lung volumes obtained through MRI and VOL12 as well as VOL18 (p = 0.544 and 0.286, respectively). However, for the left lung there was only a correlation between MRI and VOL12 (p = 0.49).Conclusions. There is a good concordance between 3DUS (VOL12) and MRI in the evaluation of lung volume in fetuses with UTM.
ISSN: 1476-7058
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