fw-gear-splitter 1.7.2

DICOM splitter based on unique tags, or localizers

DICOM Splitter

This gear is meant to split DICOM archives into two or more archives. The main use cases for this gear are if,

• There are one or more localizers (scouts, etc.) mixed in with primary images
• There are multiple Series in one archive.
• The archive is multiphasic with respect to slice location (geometry split)
• The archive has non uniform image orientations (geometry split)
• Some field varies across the archive and you have reason to the archive based on that field (Note: This "group by" option is exclusive if a previous geometry split is performed)

The gear is set to do the first two above by default, i.e. it will extract a localizer(s) from the archive, and it will extract each unique SeriesInstanceUID into its own archive.

Usage

Inputs

• dicom : DICOM archive input

Configuration

• extract_localizer (boolean, default True): Whether or not to extract localizer from archive.
• group_by (string, default "SeriesInstanceUID"): Comma separated list of dicom tags to split the archive on.
• tag (string, default "splitter"): The tag to be added on input file upon run completion.
• debug (boolean, default False): Include debug output.
• delete_input (boolean, default True): Delete input if DICOM is successfully split.

Outputs

The gear will output nothing if no splitting action was taken. Otherwise it will output a variable number of archives depending on the input and configuration named with the following pattern:

series-<SeriesNumber>_<Modality>_<SeriesDescription>_<GroupByTags>[_localizer], where

• SeriesNumber is the value of the SeriesNumber tag across the archive. By default the largest sized archive (by number of slices) will retain the original SeriesNumber and additional archives will be incremented by 1000 + i, where i is the index of the archive in a list of total archives.
• SeriesDescription is the value of the SeriesDescription tag across the archive
• GroupByTags is an underscore separated list of all tags appearing in the group_by list, and their corresponding value in that archive. Tags "SeriesInstanceUID" and "SeriesNumber" are not included even if they appear in the group_by list.
• Modality is the value of the Modality tag across the archive
• If the series is a localizer, _localizer will be appended.