Magnetic tagging of the heart wall with MRI allows noninvasive regional analysis of within-wall motion, separating it into components of rigid body motion and deformation.
Magnetic tagging with MRI provides a novel noninvasive tool for analyzing regional heart wall motion for basic physiologic and clinical research.
Analysis of the transmural distribution or nonradial components of myocardial motion has previously been possible only with use of invasive techniques such as implantation of radiopaque markers. Magnetic tagging of the heart wall in conjunction with magnetic resonance imaging allows noninvasive regional analysis of within-wall motion, including its separation into components of rigid body motion and deformation. The results of this analysis can be displayed as functional images. This provides a new tool for the study of heart wall motion that should be of use for both basic physiologic and clinical research applications.
Axel et al. (1992) studied Myocardial motion. Magnetic tagging with MRI was evaluated. Magnetic tagging of the heart wall with MRI allows noninvasive regional analysis of within-wall motion, separating it into components of rigid body motion and deformation.