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Updated: Jul 16, 2026

A Protocol for Real-time 3D Single Particle Tracking
Published on: January 3, 2018
Fiber tracking in q-ball fields using regularized particle trajectories
M Perrin1, C Poupon, Y Cointepas
1Service Hospitalier Frédéric Joliot, CEA, 91401 Orsay, France. perrin@shfj.cea.fr
Abstract:
Most of the approaches dedicated to fiber tracking from diffusion-weighted MR data rely on a tensor model. However, the tensor model can only resolve a single fiber orientation within each imaging voxel. New emerging approaches have been proposed to obtain a better representation of the diffusion process occurring in fiber crossing. In this paper, we adapt a tracking algorithm to the q-ball representation, which results from a spherical Radon transform of high angular resolution data. This algorithm is based on a Monte-Carlo strategy, using regularized particle trajectories to sample the white matter geometry. The method is validated using a phantom of bundle crossing made up of haemodialysis fibers. The method is also applied to the detection of the auditory tract in three human subjects.
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