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Proceedings Paper

Comparative study of brain deformation estimation methods
Author(s): Fenghong Liu; Keith D. Paulsen; Karen E. Lunn; Hai Sun; Alexander Hartov; Ziji Wu; David W. Roberts
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Paper Abstract

Shift of brain tissues during surgical procedures affects the precision of image-guided neurosurgery (IGNS). To improve the accuracy of the alignment between the patient and images, finite element model-based non-rigid registration methods have been investigated. The best prior estimate (BPE), the forced displacement method (FDM), the weighted basis solutions (WBS), and the adjoint equations method (AEM) are versions of this approach that have appeared in the literature. In this paper, we present a quantitative comparison study on a set of three patient cases. Three-dimensional displacement data from the surface and subsurface was extracted using the intra-operative ultrasound (iUS) and intraoperative stereovision (iSV). These data are then used as the "ground truth" in a quantitative study to evaluate the accuracy of estimates produced by the finite element models. Different types of clinical cases are presented, including distension and combination of sagging and distension. In each case, a comparison of the performance is made with the four methods. The AEM method which recovered 26-62% of surface brain motion and 20-43% of the subsurface deformation, produced the best fit between the measured data and the model estimates.

Paper Details

Date Published: 10 March 2006
PDF: 10 pages
Proc. SPIE 6141, Medical Imaging 2006: Visualization, Image-Guided Procedures, and Display, 61411D (10 March 2006); doi: 10.1117/12.654821
Show Author Affiliations
Fenghong Liu, Dartmouth College (United States)
Keith D. Paulsen, Dartmouth College (United States)
Norris Cotton Cancer Ctr. (United States)
Karen E. Lunn, Dartmouth College (United States)
Hai Sun, Dartmouth College (United States)
Dartmouth-Hitchcock Medical Ctr. (United States)
Alexander Hartov, Dartmouth College (United States)
Ziji Wu, Dartmouth College (United States)
David W. Roberts, Dartmouth Hitchcock Medical Ctr. (United States)
Norris Cotton Cancer Ctr. (United States)


Published in SPIE Proceedings Vol. 6141:
Medical Imaging 2006: Visualization, Image-Guided Procedures, and Display
Kevin R. Cleary; Robert L. Galloway, Jr., Editor(s)

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