Regional Time-radioActivity Curves (TACs)
Datafiles are in ASCII format (File format (DFT) of time-radioactivity curves), that can be imported e.g. to Excel or Origin. See also plotting of TACs.
Calculation of regional TACs from dynamic PET images
Software for processing TACs
Editing TACs
- Combining the regions from two DFT files: dftadd
- Averaging regional TACs: dftavg ; weighted average of all TACs ("head curve"): dfthead
- Performing simple arithmetic operations for regional TACs: dftcalc
- Subtracting a reference region TAC from other TACs: dftbound
- Catenating TACs, e.g. for combining early and late measurement data: dftcat
- Removing overlapping samples: dftrmovl
- Extracting specified sample time interval from the TACs: dftcut
- Extracting all or selected TACs from DFT file: dftbreak and dftadd
- Decay correction: dftdecay and dfttime; more about physical decay
- Deleting selected regions from a set of TACs: dftdel
- Printing or setting the PET time frames of regional TACs: dftframe
- Manual time delay correction: dfttime
- Adding weighting information to a DFT file: dftweigh
- Removing negative concentrations in DFT files: dftrmneg
- Correction of recovery and spill-over in myocardial TACs: heartcor
Editing or viewing header information
- Listing the regional TACs contained in a DFT file: dftlist
- Listing the maximum value inside one or several DFT files: dftmax
- Changing the region names inside DFT file: dftren , dftvncor , and dfthncor
- Changing the study number inside DFT file: dftstudy
- Sorting regional TACs inside DFT files by name of region: dftsort
- Setting or conversion of calibration and time units in DFT file: dftunit, min2sec and sec2min.
- Removing the comments inside DFT files: dftrmcmt
Programs for converting TAC files to other formats
- Converting DFT files to simple
datafiles without titles:
dft2dat,
and the other way around with dftadd - Converting DFT files to result file format: dft2res
- Converting blood, plasma and tissue data files into PMOD format: dft2pmod
- Converting blood and plasma data files into Hammersmith format and back: dft2if, if2dft
- Converting tissue data files into Hammersmith format and back: dft2idwc, idwc2dft
- Converting DFT file into HTML table format: dft2html
- Convert regional time-activity curve (TAC) data from GEMS Xeleris to DFT format: xel2dft
- Convert regional TAC data from Vinci to DFT format:
save TACs as *.cpt files in Vinci, and convert CPT format to DFT using cpt2dft - Convert regional TAC data from Amide *.tsv files to DFT format: tsv2dft
- Converting DFT file into RFIT 4.4 format: dft2rfit
- Dynamic or parametric polar map can be converted to/from DFT file using programs pm2dft and dft2pm
- Convert CSV (comma-separated values) file in DFT format. CSV files can be saved for example in Excel.
Programs for converting TAC files from/to old format:
- Converting DFT files to *.roi.kbq files: dft2nci
- Converting *.roi.kbq files to DFT files: nci2dft
- Changing the radioactivity unit of old *.nci files (nCi/mL) to *.kbq (kBq/mL): nci2kbq (available only on SUN)
- Converting DFT files to *.cpt files: dft2cpt
- Converting *.cpt files to DFT files: cpt2dft
Fitting functions to TACs
- Exponential functions: fit_exp
- Rational functions: fit_ratf
- Sigmoidal functions: fit_gvar, fit_hiad, fit_sigm
- Calculation of TACs from function parameters: fit2dat
PickData
Old SUN/OpenWindows program for averaging, deleting, renaming, and looking the regional TACs
