fit_suri - tpcclib 0.8.0 © 2023 by Turku PET Centre

Non-linear fitting of the Surge function plus integral (recirculation)
to PET time-activity curves (TACs).
  when x<=dT, f(x) = 0 
  when x>dT,  f(x) = A*(x-dT)*exp(-B*(x-dT)) + 
, where A>=0, B>=0, C>=0, and dT>=0.
Usage: fit_suri [Options] tacfile [parfile]
 -w1 | -wf
     All weights are set to 1.0 (no weighting), or weights are based on
     sampling interval. By default, weights in tacfile are used, if available.
     Specify the constraints for function parameters;
     This file with default values can be created by giving this option
     as the only command-line argument to this program.
     Without file name the default values are printed on screen.
     Setting feasible limits are highly recommended.
     Fitted and measured TACs are plotted in specified SVG file.
 -h, --help
     Display usage information on standard output and exit.
 -v, --version
     Display version and compile information on standard output and exit.
 -d[n], --debug[=n], --verbose[=n]
     Set the level (n) of debugging messages and listings.
 -q, --quiet
     Suppress displaying normal results on standard output.
 -s, --silent
     Suppress displaying anything except errors.
See also: fit_sinf, fit_feng, fit_ratf, fit2dat
Keywords: TAC, curve fitting