Simultaneous Evaluation of Lung Anatomy and Ventilation Using 4D Respiratory-Motion-Resolved Ultrashort Echo Time Sparse MRI.

Détails

ID Serval
serval:BIB_DEFAFA18440E
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Simultaneous Evaluation of Lung Anatomy and Ventilation Using 4D Respiratory-Motion-Resolved Ultrashort Echo Time Sparse MRI.
Périodique
Journal of magnetic resonance imaging
Auteur(s)
Feng L., Delacoste J., Smith D., Weissbrot J., Flagg E., Moore W.H., Girvin F., Raad R., Bhattacharji P., Stoffel D., Piccini D., Stuber M., Sodickson D.K., Otazo R., Chandarana H.
ISSN
1522-2586 (Electronic)
ISSN-L
1053-1807
Statut éditorial
Publié
Date de publication
02/2019
Peer-reviewed
Oui
Volume
49
Numéro
2
Pages
411-422
Langue
anglais
Notes
Publication types: Journal Article
Publication Status: ppublish
Résumé
Computed tomography (CT) and spirometry are the current standard methods for assessing lung anatomy and pulmonary ventilation, respectively. However, CT provides limited ventilation information and spirometry only provides global measures of lung ventilation. Thus, a method that can enable simultaneous examination of lung anatomy and ventilation is of clinical interest.
To develop and test a 4D respiratory-resolved sparse lung MRI (XD-UTE: eXtra-Dimensional Ultrashort TE imaging) approach for simultaneous evaluation of lung anatomy and pulmonary ventilation.
Prospective.
In all, 23 subjects (11 volunteers and 12 patients, mean age = 63.6 ± 8.4).
3T MR; a prototype 3D golden-angle radial UTE sequence, a Cartesian breath-hold volumetric-interpolated examination (BH-VIBE) sequence.
All subjects were scanned using the 3D golden-angle radial UTE sequence during normal breathing. Ten subjects underwent an additional scan during alternating normal and deep breathing. Respiratory-motion-resolved sparse reconstruction was performed for all the acquired data to generate dynamic normal-breathing or deep-breathing image series. For comparison, BH-VIBE was performed in 12 subjects. Lung images were visually scored by three experienced chest radiologists and were analyzed by two observers who segmented the left and right lung to derive ventilation parameters in comparison with spirometry.
Nonparametric paired two-tailed Wilcoxon signed-rank test; intraclass correlation coefficient, Pearson correlation coefficient.
XD-UTE achieved significantly improved image quality compared both with Cartesian BH-VIBE and radial reconstruction without motion compensation (P < 0.05). The global ventilation parameters (a sum of the left and right lung measures) were in good correlation with spirometry in the same subjects (correlation coefficient = 0.724). There were excellent correlations between the results obtained by two observers (intraclass correlation coefficient ranged from 0.8855-0.9995).
Simultaneous evaluation of lung anatomy and ventilation using XD-UTE is demonstrated, which have shown good potential for improved diagnosis and management of patients with heterogeneous lung diseases.
2 Technical Efficacy: Stage 2 J. Magn. Reson. Imaging 2019;49:411-422.
Pubmed
Création de la notice
29/10/2018 10:36
Dernière modification de la notice
20/08/2019 17:03
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