dwiQball-methods {dti} | R Documentation |
The method estimates, in each voxel, the coefficients of an expansion of the apparent diffusion cefficient (ADC) with respect to a apherical harmonics orthonormal system from the DWI data contained in an object of class "dtiData"
.
## S4 method for signature 'dtiData': dwiQball(object, what="Qball", order=4, lambda=0)
object |
Object of class "dtiData" |
what |
Determines quantity to estimate, either coefficients ot the orientation density function (ODF) (what="Qball" or the apparent diffusion
coefficient (ADC) (what="ADC" ) with respect to spherical harmonics of the up to the specified order. |
order |
even integer: maximum order of the sperical harmonics expansion |
lambda |
nonnegative regularization parameter. |
An object of class "dwiQball"
.
Karsten Tabelow tabelow@wias-berlin.de
J"org Polzehl polzehl@wias-berlin.de
M. Descoteaux, E. Angelino, S. Fitzgibbons and R. Deriche, Regularized, Fast and Robust Analytical Q-Ball Imaging, Magnetic Resonance Methods, 2007, 58, 497-512.
dtiData
,
readDWIdata
,
dtiIndices-methods
,
medinria
,
dtiData
,
dtiTensor
## Not run: demo(dti_art)