Meshed Image Detection in Tagged MR Images
نویسندگان
چکیده
منابع مشابه
Cardiac material markers from tagged MR images
Tagged magnetic resonance imaging (MRI) has shown great promise in non-invasive analysis of heart motion. To replace implanted markers as a gold standard, however, tagged MRI must be able to track a sparse set of material points, so-called material markers, with high accuracy. This paper presents a new method for generating accurate motion estimates over a sparse set of material points using st...
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A simple algorithm is proposed for calculating strain directly from a tagged magnetic resonance (MR) image via Moiré analysis. Tagged MR images are used to obtain strains in internal organs, particularly myocardial strain. Although signal processing-based analysis has recently been investigated, the reliability of the strain can not be obtained. In the present paper, a simple, fast, and accurat...
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X. Deng, T. S. Denney Jr Auburn University, Auburn, Alabama, United States Synopsis We present a rapid unsupervised method, called rapid UNTETHER, for computing three-dimensional (3D) myocardial strain from planar tagged cardiac MR images. Our method consisted of two steps: tag line tracking and strain reconstruction. The tag line tracking algorithm is based on a spatial tag detector and a modi...
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The final aim of this work is to perform rapid classification of tagged cardiac MR images as normal and abnormal. In the proposed technique, images are first analyzed using harmonic phase analysis and synthetic tags are computed over the myocardium. Cubic curves are fitted to these tags and curve parameters are compared at various regions of the myocardium. In this initial study, the ratios of ...
متن کاملSimulation of tagged MR images with linear tetrahedral solid elements.
Computer simulation of tagged magnetic resonance (MR) images is presented using signals derived from connected solid triangular or tetrahedral elements. Simulation provides precisely-known deformations for validating tag quantification algorithms. MR imaging signal is derived by Fourier-transforming over a standard element, then mapping to actual elements via transformations. Linear intensity v...
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ژورنال
عنوان ژورنال: IEEJ Transactions on Electronics, Information and Systems
سال: 1997
ISSN: 0385-4221,1348-8155
DOI: 10.1541/ieejeiss1987.117.11_1664