Abstract #2680
Contrast Enhanced Self-Gated Coronary Angiography at 7 Tesla Using Ultra-Short Echo Time Imaging
Naoharu Kobayashi 1 , Jianing Pang 2 , Steen Moeller 1 , Pierre-Francois van de Moortele 1 , Sebastian Schmitter 1 , Kamil Ugurbil 1 , Debiao Li 2 , Michael Garwood 1 , and Gregory J Metzger 1
1
Center for Magnetic Resonance Research,
Department of Radiology, University of Minnesota,
Minneapolis, MN, United States,
2
Biomedical
Imaging Research Institute, Cedars-Sinai Medical Center,
Los Angeles, CA, United States
We investigated the feasibility of using an ultra-short
TE (UTE) imaging method combined with the benefits of
self-gating to perform contrast enhanced CMRA
applications at 7T. Self-gating was performed by PCA on
the center k-space point from each acquired profile and
validated by comparing with physiological monitoring.
The self-gating accurately detected respiratory and
cardiac motion. Reconstruction with high temporal
resolution captured an initial first pass signal
increase after contrast administration. Extremely short
TE in UTE diminished the T2
*
shortening
effect due to the increased r2
*
at
7T, and maximized enhancement of T1 contrast for CMRA.
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