Active contours for heart motion-compensated reconstruction in computed tomography

Abstract

This paper shows a novel method related to motion compensated image reconstruction in computed tomography. The proposed method is based on deformable models. Computing the movement directly from the original non-compensated reconstruction avoiding artifacts selectively in a semiautomatic way is the first step in proposed motion compensation. The motion estimation provided by active contour models fitting and interpolation are used to reduce the image artifacts when it is applied during reconstruction. Preliminary results shows that the method produces images with a low-level artifacts for phantoms with synthetic motion.