Toward high-resolution myocardial tagging.
Magnetic resonance imaging with preceding tissue tagging is a robust method for assessing cardiac motion of the entire heartbeat cycle with a high degree of accuracy. One limitation of this technique, however, is the low resolution of the obtained displacement map of the labeled points within the myocardium. By a new tagging technique, which is based on the combination of two or more measurements of the same slice but with different grid positions, a highly improved resolution of cardiac motion data can be achieved. In combination with a multi-heart-phase echo-planar imaging sequence, such images with doubled grid frequency can be acquired in two short breath-hold periods.
Stuber
M
M
Institute of Biomedical Engineering and Medical Informatics, University of Zurich and ETHZ, Switzerland.
Fischer
S E
SE
Scheidegger
M B
MB
Boesiger
P
P
D003287:Contrast Media; D017352:Echo-Planar Imaging / Q000379:methods*; D006321:Heart / Q000033:anatomy & histology; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D008955:Models, Cardiovascular; D009038:Motion; D009200:Myocardial Contraction / Q000502:physiology*; D019047:Phantoms, Imaging; D012680:Sensitivity and Specificity
D003287:Contrast Media