title: Multimodal matching by maximization of mutual information and optical flow technique.
abstract: Conformal radiotherapy is a therapeutic method requiring medical imaging, generally CT images to obtain Hounsfield number and electronic density data indications. The use of MRI simultaneously with CT imposes to deform CT images and superimpose them on MR images. The aim of this paper is to propose a nonrigid matching method between the two modalities (CT and MRI). The transformation model is defined by an optical flow registration algorithm, using mutual information as a similarity criterion.
authors.affiliation: Laboratoire d'Automatique, Génie Informatique et Signal, Université des Sciences et Technologies de Lille, Villeneuve d'Ascq, France.
authors.forename: Georges
authors.initials: G
authors.lastname: Palos
authors.forename: Nacim
authors.initials: N
authors.lastname: Betrouni
authors.forename: Matthieu
authors.initials: M
authors.lastname: Coulanges
authors.forename: Maximilien
authors.initials: M
authors.lastname: Vermandel
authors.forename: Vincent
authors.initials: V
authors.lastname: Devlaminck
authors.forename: Jean
authors.initials: J
authors.lastname: Rousseau