dwiSqrtODF-methods: Methods for positive definite EAP and ODF estimation in...

In dti: Analysis of Diffusion Weighted Imaging (DWI) Data

Methods for positive definite EAP and ODF estimation in Package dti

Description

Compute a positive definite estimate of the Ensemble Average Propagator (EAP) and Orientation Density Function (ODF) using the approach of Cjeng et. al (2012).

Usage

  ## S4 method for signature 'dtiData'
dwiSqrtODF(object,what="sqrtODF",order=4,forder=1,lambda=0,D0=1.4e-3)

Arguments

object	Object of class "dtiData"
what	Character, currently only "sqrtODF" is possible
order	Even integer, Order of spherical harmonics approximation.
forder	Integer, Order of radial approximation.
lambda	Non-negative, Regularization parameter.
D0	Numeric vector, grid of diffusivity parameters, typically about 1e-3.

Methods

signature(object = "ANY")

Returns a warning.

signature(object = "dtiData")

Compute a positive definite estimate of the Ensemble Average Propagator (EAP) and Orientation Density Function (ODF) using the approach of Cjeng et. al (2012).

Author(s)

Karsten Tabelow [e-mail]
J\"org Polzehl [e-mail]

References

J. Cheng, T. Jiang and R. Deriche. Nonnegative Definite EAP and ODF Estimation via a Unified Multi-Shell HARDI Reconstruction, MICCAI 2012.

See Also

dtiData, readDWIdata, dtiData, dwiQball

dti documentation built on Sept. 8, 2023, 5:39 p.m.