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dti (version 1.1-0)

Analysis of diffusion weighted imaging (DWI) data

Description

Diffusion Weighted Imaging (DWI) is a Magnetic Resonance Imaging modality, that measures diffusion of water in tissues like the human brain. The package contains R-functions to process diffusion-weighted data. The functionality includes diffusion tensor imaging (DTI), structural adaptive smoothing in in case of (DTI) (K. Tabelow, J. Polzehl, V. Spokoiny, and H.U. Voss, Diffusion Tensor Imaging: Structural Adaptive Smoothing, Neuroimage 39(4), 1763-1773 (2008)), modeling for high angular resolution diffusion weighted imaging (HARDI) using Q-ball-reconstruction and tensor mixture models and a streamline fiber tracking for tensor and tensor mixture models. The package provides functionality to manipulate and visualize results in 2D and 3D.

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Version

Install

install.packages('dti')

Monthly Downloads

225

Version

1.1-0

License

GPL (>= 2)

Maintainer

Karsten Tabelow

Last Published

November 28th, 2012

Functions in dti (1.1-0)

sdpar-methods

Methods for Function `sdpar' in Package `dti'
extract-methods

Methods for Function `extract' and `[' in Package `dti'
optgradients

Optimal gradient directions for number of gradients between 6 and 162
colqFA

FA map color scheme
dtiTensor-methods

Methods for Function `dtiTensor' in Package `dti'
getsdofsb-methods

Estimate the noise standard deviation
summary-methods

Methods for Function `summary' in Package `dti'
subsetg

Create an objects of class "dtiData" containing only a subset of gradient directions.
combineDWIdata

Combine two objects of class "dtiData")
dwiSqrtODF-methods

Methods for positive definite EAP and ODF estimation in Package dti
dwi-class

Class "dwi"
dti.smooth-methods

Methods for Function `dti.smooth' in Package `dti'
show3d-methods

Methods for Function `show3d' in Package `dti'
dwiMixtensor-methods

Methods for Function `dwiMixtensor' in Package `dti'
medinria

Read/Write Diffusion Tensor Data from/to NIFTI File
plot-methods

Methods for Function `plot' in Package `dti'
pmatrix

Parallelize columnwise computations on a matrix using forking (generalizes function 'pvec' from package 'parallel')
dwiRiceBias-methods

Correction for Rician Bias
show-methods

Methods for Function `show' in Package `dti'
polyeder

Polyeders derived from the Icosahedron (icosa0) by sequential triangulation of surface triangles
dwiQball-methods

Methods for Function `dwiQball' in Package `dti'
tracking-methods

Methods for Function `tracking' in Package `dti'
awssigmc

Estimate noise variance for multicoil MR systems
optgrad

Optimal gradient directions
readDWIdata

Read Diffusion Weighted Data
dwi.smooth-methods

Smooth DWI data
dti-package

DTI Analysis
getmask-methods

Methods for Function `getmask' in Package `dti'
print-methods

Methods for Function `print' in Package `dti'
dtiIndices-methods

Methods for Function `dtiIndices' in Package `dti'