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

Details

Serval ID
serval:BIB_83BBD89641A2
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Limitations of stimulated echo acquisition mode (STEAM) techniques in cardiac applications.
Journal
Magnetic Resonance In Medicine
Author(s)
Fischer S.E., Stuber M., Scheidegger M.B., Boesiger P.
ISSN
0740-3194[print], 0740-3194[linking]
Publication state
Published
Issued date
1995
Volume
34
Number
1
Pages
80-91
Language
english
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Abstract
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.
Keywords
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
Create date
02/03/2010 16:04
Last modification date
20/08/2019 14:43
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