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Automated diffeomorphic registration of anatomical structures with rigid parts: application to dynamic cervical MRI.
Commowick O., Wiest-Daesslé N., Prima S.
Dans 15th International Conference on Medical Image Computing and Computer Assisted Intervention (Part II) - 15th International Conference on Medical Image Computing and Computer Assisted Intervention, Nice : France (2012) - http://www.hal.inserm.fr/inserm-00716106
 (23286045) 
Automated diffeomorphic registration of anatomical structures with rigid parts: application to dynamic cervical MRI.
Olivier Commowick () 1, Nicolas Wiest-Daesslé2, Sylvain Prima1
1 :  VISAGES - VISAGES : Vision Action et Gestion d'Informations en Santé
http://www.inria.fr/equipes/visages
INSERM : U746 – CNRS : UMR6074 – INRIA – Université de Rennes 1
IRISA, campus de Beaulieu F-35042 Rennes
France
2 :  Service de neurologie [Rennes]
Université de Rennes 1
Hôpital Pontchaillou 2 Rue Henri Le Guilloux 35033 Rennes
France
We propose an iterative two-step method to compute a diffeomorphic non-rigid transformation between images of anatomical structures with rigid parts, without any user intervention or prior knowledge on the image intensities. First we compute spatially sparse, locally optimal rigid transformations between the two images using a new block matching strategy and an efficient numerical optimiser (BOBYQA). Then we derive a dense, regularised velocity field based on these local transformations using matrix logarithms and M-smoothing. These two steps are iterated until convergence and the final diffeomorphic transformation is defined as the exponential of the accumulated velocity field. We show our algorithm to outperform the state-of-the-art log-domain diffeomorphic demons method on dynamic cervical MRI data.
Sciences du Vivant/Ingénierie biomédicale
Informatique/Imagerie médicale
Anglais

Communications avec actes
10.1007/978-3-642-33418-4_21
15th International Conference on Medical Image Computing and Computer Assisted Intervention (Part II)
internationale
2012
15
Pt 2
163-70
LNCS

15th International Conference on Medical Image Computing and Computer Assisted Intervention
02/10/2012
Nice
France

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