title: Non-rigid Registration of Serial Intra-operative Images for Automatic Brain Shift Estimation.
abstract: Measurement of intra-operative brain motion is important to provide boundary conditions to physics-based deformation models that can be used to register pre- and intra-operative information. In this paper we present and test a technique that can be used to measure brain surface motion automatically. This method relies on a tracked laser range scanner (LRS) that can acquire simultaneously a picture and the 3D physical coordinates of objects within its field of view. This reduces the 3D tracking problem to a 2D non-rigid registration problem which we solve with a Mutual Information-based algorithm. Results obtained on images of a phantom and on images acquired intra-operatively that demonstrate the feasibility of the method are presented.
authors.forename: Valerie
authors.initials: V
authors.lastname: Duay
authors.forename: Tuhin K
authors.initials: TK
authors.lastname: Sinha
authors.forename: Pierre-François
authors.initials: PF
authors.lastname: D'Haese
authors.forename: Michael I
authors.initials: MI
authors.lastname: Miga
authors.forename: Benoit M
authors.initials: BM
authors.lastname: Dawant