Combined Volumetric and Surface Registration
Speaker: Lilla Zollei , MGH/Martinos Center
Date: December 7 2007
Time: 2:30PM to 3:30PM
Location: 32-D507
Host: Polina Golland, CSAIL
Contact: Polina Golland, x38005, polina@csail.mit.edu
Relevant URL: We propose a novel method for the registration of volumetric images of
the brain that optimizes the alignment of both cortical and
subcortical structures. In order to achieve this, relevant geometrical
information is extracted from a surface-based morph and diffused into
the volume using the Navier operator of elasticity, resulting in a
volumetric warp that aligns cortical folding patterns. This warp field
is then refined with an intensity driven optical flow procedure that
registers noncortical regions, while preserving the cortical
alignment. The result is a combined surface and volume morph (CVS)
that accurately registers both cortical and subcortical regions,
establishing a single coordinate system suitable for the entire brain.
This is joint work by G. Postelnicu, L. Zollei and B. Fischl
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