Analyze dynamic ECAT files with this tool. ecatsum can calculate an average over specified time frames of a dynamic ECAT 6.3, ECAT 7 or Analyze 7.5 image.
Will overwrite output files without asking, if they exist. If necessary, use program eframe to get a list of the time frames.

Usage:
ecatsum [Options] <dynamic img/scn> <start frame> <end frame> <avg file>

Options:
-i
Integral image (activity x seconds) is calculated instead of an average.
-s
Sum image (sum of data matrix values) is calculated instead of an average.

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