Optimal HARDI acquisition schemes for multi-tensor models
نویسندگان
چکیده
Introduction. Multiple-tensors models have been proposed to deal with fiber-crossings configurations in diffusion imaging but are well known to be numerically challenging. First, we show that the main reason is the presence of a collinearity in the parameters when using a single-shell HARDI acquisition (one b-value), leading to an infinite number of solutions for the fitting procedure. In contrast, multiple-shell HARDI acquisitions allow the system of equations to be better determined. Second, we propose a set of simulations to numerically explore the optimal acquisition scheme for multi-tensor estimation.
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