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External tools are data processing plug-ins which take one or several images as input, and return a result image. The tools can be interactively called on individual data, or they can be changed into a processing pipeline, which can be applied to a whole list of images.
External tools can be called from the image sidebar
or from the External tab in the tools section.
After selecting a function from the list (and activating Run in the tool version), a specific dialog window is opened to request the parameters needed for processing.
All tools have the following buttons at the bottom.
The Ok button starts processing. If the Replace box is checked, the data are overwritten by the results, otherwise a new image series is created for returning the results. ? provides a short help text of the functionality.
The external tools are described briefly below, except for the SUV and Partial Volume Correction (PVC) tools which are explained separately.