Assessment of left ventricle dynamic from cardiac magnetic resonance imaging by means a correspondence approach
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Fecha
2020
Autores
Bravo, A
Vera, M
Valbuena, O
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Editor
IOP Publishing
Resumen
In this research, an approach to assess the heart dynamics is reported. The
cardiac magnetic resonance images are considered for assessing the left ventricle motion and
deformation. The shape of the cavity is obtained by means a segmentation procedure based
on a clustering algorithm at an initial instant. This three-dimensional structure is used to
establish a region of interest around the border of the structure. An optical flow method allows
determining the displacement vector of this region and then defining the shapes of the cavity
during the all cardiac cycle. The points of the left ventricle are followed using the displacement
vectors in the cardiac cycle, obtaining thus, a dense motion field of the cavity. This approximate
deformation field is refined with a correspondence method that working in the three-dimensional
space. The mapping of the points that define the left ventricle in the cardiac cycle obtained
with the correspondence procedure are then used for computing a set of clinical parameters that
allows assessing the motion and deformation of this principal structure of the human heart. The
torsion, radial and longitudinal contraction are quantified. The obtained results are promising
for evaluating the heart dynamics.