Nonlinear registration of diffusion MR images based on fiber bundles
MICCAI'07 Proceedings of the 10th international conference on Medical image computing and computer-assisted intervention - Volume Part I
Registration of high angular resolution diffusion MRI images using 4th order tensors
MICCAI'07 Proceedings of the 10th international conference on Medical image computing and computer-assisted intervention - Volume Part I
Hierachical spherical harmonics based deformable HARDI registration
MIAR'10 Proceedings of the 5th international conference on Medical imaging and augmented reality
Large deformation diffeomorphic metric mapping of orientation distribution functions
IPMI'11 Proceedings of the 22nd international conference on Information processing in medical imaging
HARDI based pattern classifiers for the identification of white matter pathologies
MICCAI'11 Proceedings of the 14th international conference on Medical image computing and computer-assisted intervention - Volume Part II
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In this work we present a method for non-rigid registration of high angular resolution diffusion imaging (HARDI) datasets that are modeled by a field of antipodally symmetric spherical functions, represented by their expansion in the real spherical harmonic (RSH) basis. We use a multichannel demons algorithm which utilizes a computationally simple, rotationally invariant similarity function defined in the RSH space. Additionally, we describe a finite strain based algorithm for reorientation of the HARDI data model. We validate our framework on simulated fiber orientation distribution datasets and on human in-vivo data.