dftratio 1.4.4 © 2003-2010 by Turku PET Centre
Calculates the regional tissue to reference tissue ratio, which is often
used as a robust and model independent index of receptor availability.
By default, ratio of AUCs is calculated as
Regional AUC(t1..t2)
Ratio = ---------------------
Reference AUC(t1..t2)
Parameters:
1) Tissue TAC file
2) Name of reference region in tissue file, or name of datafile
containing the reference tissue TAC
3-4) Start and end times for AUC calculation (t1 and t2)
5) Result file (existing file is overwritten)
[6) Ratio curve file (optional); only for plotting ]
Options:
-h, --help
Print this message and exit.
-B Bound/free-ratio is calculated instead of Total/free;
reference region TAC is first subtracted from other regional TACs.
-M Bound TAC maximum value is searched between start and end times,
and Bound/free ratio is calculated at this time point.
--version or --build
Print software build information and exit
--silent
Program works silently, printing only warnings and error messages
--verbose
Program prints more information about what it is doing.
The weights are not used in the calculations.
Example:
dftratio ut1234.dft cer 40 60 ut1234ratio.res
See also:
imgratio,
dftcalc,
dftdv,
interpol,
dftunit,
rescoll
Keywords: DFT, modelling
This program comes with ABSOLUTELY NO WARRANTY. This is free software, and
you are welcome to redistribute it under GNU General Public License.
