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| Left
Ventricle 3-D Reconstruction from Angiograms
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 Spanish |
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The ventricular function
is
defined by a set of parameters describing the mechanical and electrical
activity of this cavity. This set is an important attribute necessary
for
determining the right therapeutic procedure used in patients with
cardiac
diseases. Many of these parameters, as the ventricular volume, the
ejection
fraction and the ventricular mass, are estimated by considering the
assumption
of an elliptical model for the left ventricle shape. This assumption
can lead
to important estimation errors. The goal of the
three-dimensional reconstruction of the ventricular shape is to remove
this
restriction. In this way, it is possible to improve the assessment of
the
ventricular function. The reconstruction
problem concerns the recovering of the 3-D ventricular shape from only
a few
angiographic views. This is an ill-posed
inverse problem that can have many possible solutions. In order to
obtain a
useful solution it is necessary to consider additional prior
information
related to the ventricle shape. Our approach performs the
reconstruction directly in the 3D space and considers the oblique
projection
geometry of the biplane acquisition system. |