Unsupervised estimation of myocardial displacement from tagged MR sequences using nonrigid registration.

@article{LedesmaCarbayo2008UnsupervisedEO,
  title={Unsupervised estimation of myocardial displacement from tagged MR sequences using nonrigid registration.},
  author={Mar{\'i}a J. Ledesma-Carbayo and J. Andrew Derbyshire and Smita Sampath and Andr{\'e}s Santos and Manuel Desco and Elliot R. McVeigh},
  journal={Magnetic resonance in medicine},
  year={2008},
  volume={59 1},
  pages={181-9}
}
We propose a fully automatic cardiac motion estimation technique that uses nonrigid registration between temporally adjacent images to compute the myocardial displacement field from tagged MR sequences using as inputs (sources) both horizontally and vertically tagged images. We present a new multisource nonrigid registration algorithm employing a semilocal deformation model that provides controlled smoothness. The method requires no segmentation. We apply a multiresolution optimization strategy… CONTINUE READING