High-resolution 3D whole-heart coronary MRA: a study on the combination of data acquisition in multiple breath-holds and 1D residual respiratory motion compensation.

Détails

ID Serval
serval:BIB_6FE70BA30776
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
High-resolution 3D whole-heart coronary MRA: a study on the combination of data acquisition in multiple breath-holds and 1D residual respiratory motion compensation.
Périodique
Magma
Auteur(s)
Forman C., Piccini D., Grimm R., Hutter J., Hornegger J., Zenge M.O.
ISSN
1352-8661 (Electronic)
ISSN-L
0968-5243
Statut éditorial
Publié
Date de publication
2014
Peer-reviewed
Oui
Volume
27
Numéro
5
Pages
435-443
Langue
anglais
Notes
Publication types: Journal Article Publication Status: ppublish
Résumé
OBJECT: To study a scan protocol for coronary magnetic resonance angiography based on multiple breath-holds featuring 1D motion compensation and to compare the resulting image quality to a navigator-gated free-breathing acquisition. Image reconstruction was performed using L1 regularized iterative SENSE.
MATERIALS AND METHODS: The effects of respiratory motion on the Cartesian sampling scheme were minimized by performing data acquisition in multiple breath-holds. During the scan, repetitive readouts through a k-space center were used to detect and correct the respiratory displacement of the heart by exploiting the self-navigation principle in image reconstruction. In vivo experiments were performed in nine healthy volunteers and the resulting image quality was compared to a navigator-gated reference in terms of vessel length and sharpness.
RESULTS: Acquisition in breath-hold is an effective method to reduce the scan time by more than 30 % compared to the navigator-gated reference. Although an equivalent mean image quality with respect to the reference was achieved with the proposed method, the 1D motion compensation did not work equally well in all cases.
CONCLUSION: In general, the image quality scaled with the robustness of the motion compensation. Nevertheless, the featured setup provides a positive basis for future extension with more advanced motion compensation methods.
Pubmed
Web of science
Création de la notice
23/10/2014 18:48
Dernière modification de la notice
20/08/2019 14:28
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