gdimap (version 0.1-8)

data: A Real Dataset for Diffusion MRI Analysis

Description

The data set data.nii.gz is a gzipped NIfTI data set converted from the original DICOM data set provided by the Advanced Biomedical MRI Lab, National Taiwan University Hospital, under the designation DSI 203-point 3mm.

For reasons of limited CRAN storage space, a trimmed down data set with just 4 coronal slices was selected. Coronal slices (29:32) were extracted from the original data set. Hence, the argument bview="coronal" is used in the examples, and the range of coronal slices is (1:4). User specified complete data sets may be used without restrictions.

format

The file data.nii.gz is in gzipped NIfTI format. The R-package oro.nifti is required to read NIfTI files.

Details

The data set is included in the DSI Studio package, publicly available from the NITRC repository. This data set is from a normal 24-year-old male volunteer, and has been provided as a demonstration data set in connection with the DSI Studio software for diffusion MR image analysis. The data set was obtained with an echo planar imaging diffusion sequence with twice-refocused echo, dimension 64x64x40, and slice thickness 2.9mm. Further details on the data set specification are available from the NITRC repository.

References

Yeh, F.-C., Wedeen, V. J., and Tseng, W.-Y. I. Generalized q-Sampling Imaging. IEEE Transactions on Medical Imaging 29, 9 (2010), 1626--1635.

NITRC repository, http://www.nitrc.org.

See Also

data_brain_mask, data.bval, data.bvec, data_V1, data_V2, data_gfa, btable