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Four-dimensional respiratory motion-resolved whole heart coronary MR angiography.
Davide Piccini
1
,
2 ,
Li Feng
3 ,
Gabriele Bonanno
2 ,
Simone Coppo
2 ,
Jérôme Yerly
2
,
4 ,
Ruth P Lim
5 ,
Juerg Schwitter
6 ,
Daniel K Sodickson
3 ,
Ricardo Otazo
3 ,
Matthias Stuber
2
,
4
April 2017
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Abstract
Free-breathing whole-heart coronary MR angiography (MRA) commonly uses navigators to gate respiratory motion, resulting in lengthy and unpredictable acquisition times. Conversely, self-navigation has 100% scan efficiency, but requires motion correction over a broad range of respiratory displacements, which may introduce image artifacts. We propose replacing navigators and self-navigation with a respiratory motion-resolved reconstruction approach.