title: Discontinuity Preserving Image Registration through Motion Segmentation: A Primal-Dual Approach.
abstract: Image registration is a powerful tool in medical image analysis and facilitates the clinical routine in several aspects. There are many well established elastic registration methods, but none of them can so far preserve discontinuities in the displacement field. These discontinuities appear in particular at organ boundaries during the breathing induced organ motion. In this paper, we exploit the fact that motion segmentation could play a guiding role during discontinuity preserving registration. The motion segmentation is embedded in a continuous cut framework guaranteeing convexity for motion segmentation. Furthermore we show that a primal-dual method can be used to estimate a solution to this challenging variational problem. Experimental results are presented for MR images with apparent breathing induced sliding motion of the liver along the abdominal wall.
authors.affiliation: Medical Image Analysis Center, Department of Biomedical Engineering, University of Basel, Basel, Switzerland.
authors.forename: Silja
authors.initials: S
authors.lastname: Kiriyanthan
authors.affiliation: Medical Image Analysis Center, Department of Biomedical Engineering, University of Basel, Basel, Switzerland.
authors.forename: Ketut
authors.identifier: 0000-0002-3546-0467
authors.initials: K
authors.lastname: Fundana
authors.affiliation: Medical Image Analysis Center, Department of Biomedical Engineering, University of Basel, Basel, Switzerland.
authors.forename: Tahir
authors.initials: T
authors.lastname: Majeed
authors.affiliation: Medical Image Analysis Center, Department of Biomedical Engineering, University of Basel, Basel, Switzerland.
authors.forename: Philippe C
authors.identifier: 0000-0001-8785-2713
authors.initials: PC
authors.lastname: Cattin
mesh_terms: D000465:Algorithms; D004548:Elasticity; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D008099:Liver / Q000000981:diagnostic imaging*; D008279:Magnetic Resonance Imaging; D009038:Motion; D010363:Pattern Recognition, Automated / Q000379:methods; D015203:Reproducibility of Results; D012119:Respiration; D012680:Sensitivity and Specificity