Andrew David
Scott1,2, Jennifer Keegan, 1,2, David N. Firmin,
1,2
1National Heart and Lung Institute,
Imperial College, London, Greater London, United Kingdom; 2Cardiovascular
Magnetic Resonance Unit, The Royal Brompton Hospital, London, Greater London,
United Kingdom
High
resolution 3D coronary artery wall imaging potentially enables the assessment
of the full 3D extent of a plaque, but is time consuming when used with
navigator gating. We compare 3D spiral
right coronary artery wall imaging with a highly efficient beat-to-beat
respiratory-motion-correction technique using localized tracking of the fat
around the artery (99.6% respiratory efficiency) with navigator gated (39%
efficient) 2D spiral and 2D turbo spin echo techniques. The techniques were compared quantitatively
using vessel wall thickness. The
improved respiratory efficiency of the beat-to-beat
respiratory-motion-correction technique facilitates high resolution 3D
coronary wall imaging within a reasonable duration.