Image segmentation for PET images made easy. eflexseg can help you with the flexible image segmentation (clustering) for dynamic PET image. This program is for method testing purposes only.

Command-line arguments:
1. Dynamic image file
2. Threshold-% to exclude background and cerebrospinal fluid
3. Max CV% allowed for pixels in the same cluster
4. Threshold-% for correlation coefficient between cluster TACs
5. Static cluster image
6. Cluster TAC file (optional)

Options:
-cf=<filename for correction factor image>
ECAT format file will contain correction factors for individual pixels, calculated as (AUC of cluster avg TAC)/(AUC of pixel TAC)
-sm=<filename for smoothed dynamic image>
TACs in the original dynamic image are replaced by the cluster TACs which have been divided by the correction factors
-h or --help
Print this message and exit
-v, --version or --build
Print software build information and exit
--silent
Program works silently, printing only error and warning messages
--verbose
Program prints lots of information about what it is doing.

The license of this software is Freeware, you can free download and free use this calculator software.