Calculate a weighted average TAC with this utility. dfthead can calculate a weighted average TAC (head curve) of all regions in a DFT file; by default it is included in the DFT file with name Head.
DFT is a multipurpose data file format for regional tissue time-activity curves, blood or plasma TACs and fractions of authentic tracer and its metabolites in plasma.

Usage: dfthead <Datafile> [Filename for head curve]

Options:
-h, --help
Print this message and exit
--version or --build
Print software build information and exit
--silent
Program works silently, printing only warnings and error 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.