Title :
An Improved Articulated Registration Method For Neck Images
Author :
D´Aische, A. Du Bois ; De Craene, M. ; Macq, B. ; Warfield, S.K.
Author_Institution :
Commun. & Remote Sensing Lab., Univ. Catholique de Louvain
Abstract :
This paper presents a complete method estimating the displacement field of bodies constrained by an articulated model such as the neck area. Indeed bony structures between different patient images, such as vertebras, may rigidly move while other tissues may deform. The method is divided into 3 steps. The method first registers the articulated rigid bodies together. Then it propagates the deformation into the whole volume through the use of a tetrahedral mesh and it finishes the registration using a mutual information based optical flow. Following the ITK framework, it uses a fast stochastic gradient descent optimization strategy chosen to maximize the mutual information metric. We demonstrate this method provides accurate results on 3D CT, MR and PET images
Keywords :
biomedical MRI; gradient methods; image registration; image sequences; medical image processing; mesh generation; optimisation; positron emission tomography; stochastic processes; 3D CT; ITK framework; MR; PET; articulated registration method; articulated rigid bodies; bony structures; deformation; fast stochastic gradient descent optimization strategy; mutual information metric; neck images; optical flow; tetrahedral mesh; vertebras; Biological system modeling; Biological tissues; Deformable models; Filters; Hospitals; Laboratories; Mutual information; Neck; Pipelines; Radiology;
Conference_Titel :
Engineering in Medicine and Biology Society, 2005. IEEE-EMBS 2005. 27th Annual International Conference of the
Conference_Location :
Shanghai
Print_ISBN :
0-7803-8741-4
DOI :
10.1109/IEMBS.2005.1616288