2D cine vs. 3D self-navigated free-breathing high-resolution whole heart cardiovascular magnetic resonance for aortic root measurements in congenital heart disease.

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Etat: Public
Version: de l'auteur⸱e
Licence: CC BY 4.0
ID Serval
serval:BIB_8CF2E4BED96C
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
2D cine vs. 3D self-navigated free-breathing high-resolution whole heart cardiovascular magnetic resonance for aortic root measurements in congenital heart disease.
Périodique
Journal of cardiovascular magnetic resonance
Auteur⸱e⸱s
Nussbaumer C., Bouchardy J., Blanche C., Piccini D., Pavon A.G., Monney P., Stuber M., Schwitter J., Rutz T.
ISSN
1532-429X (Electronic)
ISSN-L
1097-6647
Statut éditorial
Publié
Date de publication
27/05/2021
Peer-reviewed
Oui
Volume
23
Numéro
1
Pages
65
Langue
anglais
Notes
Publication types: Journal Article
Publication Status: epublish
Résumé
Cardiovascular magnetic resonance (CMR) is considered the method of choice for evaluation of aortic root dilatation in congenital heart disease. Usually, a cross-sectional 2D cine stack is acquired perpendicular to the vessel's axis. However, this method requires a considerable patient collaboration and precise planning of image planes. The present study compares a recently introduced 3D self-navigated free-breathing high-resolution whole heart CMR sequence (3D self nav) allowing a multiplanar retrospective reconstruction of the aortic root as an alternative to the 2D cine technique for determination of aortic root diameters.
A total of 6 cusp-commissure (CuCo) and cusp-cusp (CuCu) enddiastolic diameters were measured by two observers on 2D cine and 3D self nav cross-sectional planes of the aortic root acquired on a 1.5 T CMR scanner. Asymmetry of the aortic root was evaluated by the ratio of the minimal to the maximum 3D self nav CuCu diameter. CuCu diameters were compared to standard transthoracic echocardiographic (TTE) aortic root diameters.
Sixty-five exams in 58 patients (32 ± 15 years) were included. Typically, 2D cine and 3D self nav spatial resolution was 1.1-1.5 <sup>2</sup> × 4.5-7 mm and 0.9-1.15 <sup>3</sup> mm, respectively. 3D self nav yielded larger maximum diameters than 2D cine: CuCo 37.2 ± 6.4 vs. 36.2 ± 7.0 mm (p = 0.006), CuCu 39.7 ± 6.3 vs. 38.5 ± 6.5 mm (p < 0.001). CuCu diameters were significantly larger (2.3-3.9 mm, p < 0.001) than CuCo and TTE diameters on both 2D cine and 3D self nav. Intra- and interobserver variabilities were excellent for both techniques with bias of -0.5 to 1.0 mm. Intra-observer variability of the more experienced observer was better for 3D self nav (F-test p < 0.05). Aortic root asymmetry was more pronounced in patients with bicuspid aortic valve (BAV: 0.73 (interquartile (IQ) 0.69; 0.78) vs. 0.93 (IQ 0.9; 0.96), p < 0.001), which was associated to a larger difference of maximum CuCu to TTE diameters: 5.5 ± 3.3 vs. 3.3 ± 3.8 mm, p = 0.033.
Both, the 3D self nav and 2D cine CMR techniques allow reliable determination of aortic root diameters. However, we propose to privilege the 3D self nav technique and measurement of CuCu diameters to avoid underestimation of the maximum diameter, particularly in patients with asymmetric aortic roots and/or BAV.
Mots-clé
Aortic Valve/diagnostic imaging, Bicuspid Aortic Valve Disease, Cross-Sectional Studies, Humans, Magnetic Resonance Imaging, Cine, Magnetic Resonance Spectroscopy, Predictive Value of Tests, Reproducibility of Results, Retrospective Studies, 3D self-navigation whole heart, Aortic root dilatation, Bicuspid aortic valve, Congenital heart disease
Pubmed
Web of science
Open Access
Oui
Création de la notice
15/06/2021 10:57
Dernière modification de la notice
10/11/2021 6:40
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