Left ventricle 3D reconstruction from projections based on a Markov field model

Abstract:

This paper reports a left ventricle tridimensional reconstruction method from two orthogonal X-rays projections. The proposed algorithm decomposes the original 3D reconstruction into several 2D reconstruction problems, under the assumption of having parallel projections. The 2D reconstruction is done by considering as input two one dimensional profiles. The reconstruction process starts with an initial approximation for each 2D slice, then this model is appropriately deformed by using an algorithm based on Simulated Annealing to minimize an energy function that includes projection compatibility and spatial regularity constraints. With this purpose, each slice is modeled as a bidimensional Markov-Gibbs random field. The performance of this reconstruction method is evaluated by considering angiographic images and a 3D binary database.

Año de publicación:

1996

Keywords:

Fuente:

scopus