Diffusion tensor

Compute a diffusion tensor in each voxel of the input image (restricted by a mask if provided)

Description

Compute a diffusion tensor in each voxel with a non null T2 value (or in each voxel in the mask if a mask is used). The result is a "Bucket" file containing, for each voxel processed, the tensor's 6 coefficients and eigen system. The estimation process uses an SVD to compute the tensor coefficients.

Parameters

t2_diffusion: T2 Diffusion MR ( input )

T2 image extracted from diffusion raw data.

dw_diffusion: DW Diffusion MR ( input )

Diffusion-weighted images.

mask: Diffusion Mask ( optional, input )

Binary mask used to limit the computed voxels. Voxels not in the mask (i.e. whose voxel value is zero) are ignored.

diffusion_model: DTI Model ( output )

Resulting structure containing one DTI tensor information for each voxel.

error_mask: Error mask ( optional, output )

Binary mask indicating in which voxels tensor estimation failed.

Technical information

Toolbox : Diffusion and Tracking

User level : 1

Identifier : DiffusionDTIModel

File name : brainvisa/toolboxes/connectomist/processes/Model pipeline components/DiffusionDTIModel.py

Supported file formats :

t2_diffusion :

GIS image, VIDA image, NIFTI-1 image, MINC image, gz compressed MINC image, DICOM image, TIFF image, XBM image, PBM image, PGM image, BMP image, XPM image, PPM image, gz compressed NIFTI-1 image, TIFF(.tif) image, ECAT i image, PNG image, JPEG image, MNG image, GIF image, SPM image, ECAT v image

dw_diffusion :

GIS image, VIDA image, NIFTI-1 image, MINC image, gz compressed MINC image, DICOM image, TIFF image, XBM image, PBM image, PGM image, BMP image, XPM image, PPM image, gz compressed NIFTI-1 image, TIFF(.tif) image, ECAT i image, PNG image, JPEG image, MNG image, GIF image, SPM image, ECAT v image

mask :

GIS image, VIDA image, NIFTI-1 image, MINC image, gz compressed MINC image, DICOM image, TIFF image, XBM image, PBM image, PGM image, BMP image, XPM image, PPM image, gz compressed NIFTI-1 image, TIFF(.tif) image, ECAT i image, PNG image, JPEG image, MNG image, GIF image, SPM image, ECAT v image

diffusion_model :

Bucket

error_mask :

GIS image, VIDA image, NIFTI-1 image, MINC image, TIFF image, XBM image, PBM image, PGM image, BMP image, XPM image, PPM image, gz compressed NIFTI-1 image, ECAT i image, PNG image, JPEG image, MNG image, GIF image, SPM image, ECAT v image