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Definition of a four-dimensional continuous planispheric transformation for the tracking and the analysis of left-ventricle motion
Abstract : Cardiologists assume that analysis of the motion of the heart (especially the left ventricle) can provide useful information about the health of the myocardium. A 4-D polar transformation is defined to describe the left-ventricle (LV) motion and a method is presented to estimate it from sequences of 3-D images. The transformation is defined in 3-D planispheric coordinates (3PC) by a small number of parameters involved in a set of simple linear equations. It is continuous and regular in time and space, and periodicity in time can be imposed. The local motion can be easily decomposed into a few canonical motions (radial motion, rotation around the long-axis, elevation). To recover the motion from original data, the 4-D polar transformation is calculated using an adaptation of the iterative closest-point algorithm. We present the mathematical framework and a demonstration of its feasability on a series of gated SPECT sequences.
Cited literature [42 references]
https://hal.inria.fr/inria-00615087
Contributor : Project-Team Asclepios Connect in order to contact the contributor
Submitted on : Wednesday, August 17, 2011 - 11:33:50 PM
Last modification on : Friday, February 4, 2022 - 3:22:29 AM
Long-term archiving on: : Friday, November 25, 2011 - 11:30:24 AM
Contributor : Project-Team Asclepios Connect in order to contact the contributor
Submitted on : Wednesday, August 17, 2011 - 11:33:50 PM
Last modification on : Friday, February 4, 2022 - 3:22:29 AM
Long-term archiving on: : Friday, November 25, 2011 - 11:30:24 AM
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