Stimulated-echo acquisition mode (STEAM) MRI for black-blood delayed hyperenhanced myocardial imaging.

Details

Serval ID
serval:BIB_9E0C8D5C9194
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Stimulated-echo acquisition mode (STEAM) MRI for black-blood delayed hyperenhanced myocardial imaging.
Journal
Journal of Magnetic Resonance Imaging
Author(s)
Ibrahim el S.H., Weiss R.G., Stuber M., Kraitchman D.L., Pan L., Spooner A.E., Osman N.F.
ISSN
1053-1807[print], 1053-1807[linking]
Publication state
Published
Issued date
2008
Volume
27
Number
1
Pages
229-238
Language
english
Notes
Publication types: Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't ; Validation Studies
Publication Status: ppublish
Abstract
PURPOSE: To develop a breathhold method for black-blood viability imaging of the heart that may facilitate identifying the endocardial border. MATERIALS AND METHODS: Three stimulated-echo acquisition mode (STEAM) images were obtained almost simultaneously during the same acquisition using three different demodulation values. Two of the three images were used to construct a black-blood image of the heart. The third image was a T(1)-weighted viability image that enabled detection of hyperintense infarcted myocardium after contrast agent administration. The three STEAM images were combined into one composite black-blood viability image of the heart. The composite STEAM images were compared to conventional inversion-recovery (IR) delayed hyperenhanced (DHE) images in nine human subjects studied on a 3T MRI scanner. RESULTS: STEAM images showed black-blood characteristics and a significant improvement in the blood-infarct signal-difference to noise ratio (SDNR) when compared to the IR-DHE images (34 +/- 4.1 vs. 10 +/- 2.9, mean +/- standard deviation (SD), P < 0.002). There was sufficient myocardium-infarct SDNR in the STEAM images to accurately delineate infarcted regions. The extracted infarcts demonstrated good agreement with the IR-DHE images. CONCLUSION: The STEAM black-blood property allows for better delineation of the blood-infarct border, which would enhance the fast and accurate measurement of infarct size.
Keywords
Computer Simulation, Contrast Media, Gadolinium DTPA/diagnostic use, Humans, Image Interpretation, Computer-Assisted, Magnetic Resonance Imaging/methods, Myocardial Infarction/pathology, Phantoms, Imaging
Pubmed
Web of science
Open Access
Yes
Create date
02/03/2010 17:04
Last modification date
20/08/2019 16:04
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