Limitations of stimulated echo acquisition mode (STEAM) techniques in cardiac applications.

Détails

ID Serval
serval:BIB_83BBD89641A2
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Limitations of stimulated echo acquisition mode (STEAM) techniques in cardiac applications.
Périodique
Magnetic Resonance In Medicine
Auteur⸱e⸱s
Fischer S.E., Stuber M., Scheidegger M.B., Boesiger P.
ISSN
0740-3194[print], 0740-3194[linking]
Statut éditorial
Publié
Date de publication
1995
Volume
34
Numéro
1
Pages
80-91
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Résumé
Stimulated echoes are widely used for imaging functional tissue parameters such as diffusion coefficient, perfusion, and flow rates. They are potentially interesting for the assessment of various cardiac functions. However, severe limitations of the stimulated echo acquisition mode occur, which are related to the special dynamic properties of the beating heart and flowing blood. To the well-known signal decay due to longitudinal relaxation and through-plane motion between the preparation and the read-out period of the stimulated echoes, additional signal loss is often observed. As the prepared magnetization is fixed with respect to the tissue, this signal loss is caused by the tissue deformation during the cardiac cycle, which leads to a modification of the modulation frequency of the magnetization. These effects are theoretically derived and corroborated by phantom and in vivo experiments.
Mots-clé
Blood Flow Velocity, Coronary Circulation, Heart/anatomy & histology, Heart/physiology, Humans, Image Processing, Computer-Assisted, Magnetic Resonance Imaging/methods, Models, Cardiovascular, Models, Structural, Myocardial Contraction, Signal Processing, Computer-Assisted
Pubmed
Web of science
Création de la notice
02/03/2010 16:04
Dernière modification de la notice
20/08/2019 14:43
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