# dwicat¶

## Synopsis¶

Concatenating multiple DWI series accounting for differential intensity scaling

## Usage¶

dwicat inputs output [ options ]

• inputs: Multiple input diffusion MRI series
• output: The output image series (all DWIs concatenated)

## Description¶

This script concatenates two or more 4D DWI series, accounting for the fact that there may be differences in intensity scaling between those series. This intensity scaling is corrected by determining scaling factors that will make the overall image intensities in the b=0 volumes of each series approximately equivalent.

## Options¶

• -mask image Provide a binary mask within which image intensities will be matched

### Additional standard options for Python scripts¶

• -nocleanup do not delete intermediate files during script execution, and do not delete scratch directory at script completion.
• -scratch /path/to/scratch/ manually specify the path in which to generate the scratch directory.
• -continue <ScratchDir> <LastFile> continue the script from a previous execution; must provide the scratch directory path, and the name of the last successfully-generated file.

### Standard options¶

• -info display information messages.
• -quiet do not display information messages or progress status. Alternatively, this can be achieved by setting the MRTRIX_QUIET environment variable to a non-empty string.
• -debug display debugging messages.
• -force force overwrite of output files.