Regional heart wall motion: two-dimensional analysis and functional imaging with MR imaging.
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.
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Department of Radiology, Hospital of the University of Pennsylvania, Philadelphia 19104.
Gonçalves
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Bloomgarden
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D003198:Computer Simulation; D006321:Heart / Q000033:anatomy & histology / Q000502:physiology*; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008279:Magnetic Resonance Imaging / Q000379:methods; D009200:Myocardial Contraction