Myocardial T(2) (*) mapping free of distortion using susceptibility-weighted fast spin-echo imaging: A feasibility study at 1.5 T and 3.0 T

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Item Type:	Article
Title:	Myocardial T(2) (*) mapping free of distortion using susceptibility-weighted fast spin-echo imaging: A feasibility study at 1.5 T and 3.0 T
Creators Name:	Heinrichs, U., Utting, J.F., Frauenrath, T., Hezel, F., Krombach, G.A., Hodenius, M.A., Kozerke, S. and Niendorf, T.
Abstract:	This study demonstrates the feasibility of applying free-breathing, cardiac-gated, susceptibility-weighted fast spin-echo imaging together with black blood preparation and navigator-gated respiratory motion compensation for anatomically accurate T(2) () mapping of the heart. First, T(2) () maps are presented for oil phantoms without and with respiratory motion emulation (T(2) () = (22.1 +/- 1.7) ms at 1.5 T and T(2) () = (22.65 +/- 0.89) ms at 3.0 T). T(2) () relaxometry of a ferrofluid revealed relaxivities of R(2) () = (477.9 +/- 17) mM(-1)s(-1) and R(2) () = (449.6 +/- 13) mM(-1)s(-1) for UFLARE and multiecho gradient-echo imaging at 1.5 T. For inferoseptal myocardial regions mean T(2) () values of 29.9 +/- 6.6 ms (1.5 T) and 22.3 +/- 4.8 ms (3.0 T) were estimated. For posterior myocardial areas close to the vena cava T(2) ()-values of 24.0 +/- 6.4 ms (1.5 T) and 15.4 +/- 1.8 ms (3.0 T) were observed. The merits and limitations of the proposed approach are discussed and its implications for cardiac and vascular T(2) ()-mapping are considered. Magn Reson Med, 2009. (c) 2009 Wiley-Liss, Inc.
Keywords:	Cardiovascular MRI, Susceptibility, BOLD, Fast Spin Echo, T(2) (*) Mapping
Source:	Magnetic Resonance in Medicine
ISSN:	0740-3194
Publisher:	Wiley
Volume:	62
Number:	3
Page Range:	822-828
Date:	September 2009
Official Publication:	https://doi.org/10.1002/mrm.22054
PubMed:	View item in PubMed

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