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- Title
Comparison between multiplanar and rendering modes in the assessment of fetal atrioventricular valve areas by 3D/4D ultrasonography.
- Authors
Araujo Júnior, Edward; Rolo, Liliam Cristine; Simioni, Christiane; Machado Nardozza, Luciano Marcondes; Alves da Rocha, Luciane; Martins, Wellington P.; Fernandes Moron, Antonio
- Abstract
Objective: To compare the agreement of multiplanar and rendering modes in the assessment fetal atrioventricular valves (mitral and tricuspid) areas by three-dimensional (3D) ultrasonography using the software spatio-temporal image correlation (STIC). Methods: We conducted a prospective cross-sectional study with normal pregnant women, with single fetuses, between 18-33 weeks. To measure the areas, we used the plan of fourchamber view. In the case of multiplanar, the plane was rotated on the axis "Z" form the heart to position at 9h. For rendering, the green line (region of interest - ROI) was placed from the atria of the heart perpendicular to the crux. The agreement was assessed by a Bland-Altman (limits of agreement) using the relative difference between the measures: ((rendering mode) - (multiplanar mode)) / (average). Results: 328 fetuses were evaluated. We have not identified the occurrence of systematic error between methods: the average relative difference was 1.62% (-2.07% to 5.32%, confidence interval 95%) in the mitral and 1.77% (- 1.08% to 4.62%) in the tricuspid valve. The limits of agreement between methods were -65.26% to 68.51% for the mitral and -49.91% to 53.45% for the tricuspid. Conclusions: There was no systematic error between modes and thus the observed values for the area of fetal atrioventricular valves can be used for comparisons needs to be corrected. However, relatively large variations may be observed when repeating the measurement area by different modes.
- Subjects
ULTRASONIC imaging; ATRIOVENTRICULAR node; PREGNANT women; HEART atrium; CROSS-sectional method; FETUS
- Publication
Brazilian Journal of Cardiovascular Surgery, 2012, Vol 27, Issue 3, p472
- ISSN
0102-7638
- Publication type
Article
- DOI
10.5935/1678-9741.20120079