Abstract
A common assumption in medical image registration is that the estimation of a globally continuous deformation field is plausible in reality. However, a sliding behavior of adjacent organ boundaries (e.g. lung and ribcage) cannot be described in a plausible way by a continuous deformation field. In this paper, we address this issue with a novel registration framework that explicitly models sliding of interfaces and can preserve discontinuities in the deformation field along predefined organ boundaries. Incorporated methods involve constrained nonlinear registration and a finite element discretization on unstructured tetrahedral meshes. Evaluation is based on the freely available DIR-Lab datasets.
| Original language | English |
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| Title of host publication | Bildverarbeitung für die Medizin 2015, Algorithmen – Systeme – Anwendungen, Proceedings des Workshops vom 15. bis 17. März 2015 in Lübeck |
| Editors | Heinz Handels, Thomas M. Deserno, Hans-Peter Meinzer, Thomas Tolxdorff |
| Number of pages | 6 |
| Place of Publication | Berlin, Heidelberg |
| Publisher | Springer Verlag |
| Publication date | 25.02.2015 |
| Pages | 335-340 |
| ISBN (Print) | 978-3-662-46223-2 |
| ISBN (Electronic) | 978-3-662-46224-9 |
| DOIs | |
| Publication status | Published - 25.02.2015 |
| Event | Workshop on Bildverarbeitung fur die Medizin 2015 - Universität zu Lübeck, Lübeck, Germany Duration: 15.03.2015 → 17.03.2015 |