TRiP98 News & History

Version 1310b (October 2015)

• Allow negative offsets for the ripple filter transmission function.

• A few bugs in the scatter code.
• Dose prescription in ctbased optimization should work again.

Version 1310a (September 2015)

• MK150828: Bogus export(gd) for ripple filter folded spectra.

Version 1310 (February 2014)

• The window() parameter action has changed at several places (CT,Dose),
• Internal: VOI class codes (rather than flag bits) to handle target/OAR consistently.
• Internal: cleanup pre-1107 code.

• makegeometry command sometimes created an uncessary extra slice,
• VOI volume estimation,
• VOI # of slices output,
• Detector signal calculation was buggy in 1201b (beam divergence).

Version 1201b (August 2012)

• Support of beam divergence for some dose calculation algorithms, via specifying scanner distance from isocenter in scancap.

• None so far.

Version 1201a (April 2012)

• Dose calculation results can be stored in integer cubes using rounding instead of truncation, thus improving accuracy,
• BFGS has been added to the choice of optimization algorithms,
• Optimization of raster points with zero contents: strategy modified, see parameter grad4zero.

• With the ms dose algorithm sometimes excessively large doseext() parameters were necessary to obtain consistent results. (hopefully) fixed. Dose results might differ from previous versions.
• Consistent passing of resultant particle numbers from preoptimization to full optimization.

Version 1201 (January 2012)

• bug fixes: none.

Version 1107 (July 2011/February 2012)

• Support for multiple projectiles (SIS,DDD,SPC) to allow multi-ion plan optimization
• Support for effect-based optimization, to allow optimization after pre-irradiation, requiring fractionation knowledge.

Version 1001e (September 2011)

• mainly bug fixes:
  • polygon check "grazing" bug fixed,
  • triangulation "inside" check, correct error report,
  • DVH's with dynamic range,
  • Dose/DVH with correct normalization for float/double cubes.

Version 1001d (July 2011)

• Optimization
  • algorithms for H2Obased same as CTbased.
  • myfac stepsize control for H2Obased pre-optimization, should give better results with LEM IV RBE tables.
  • possibility to skip pre-optimization.
  • iteration stop criteria consistent for H2Obased and CTbased.
  • modified startup defaults:
    from

    /optalg(cg) /geps( 0  ) /bioalg(cl) /graceiter(5)
    

    to

    /optalg(fr) /geps(2E-3) /bioalg(ld) /graceiter(1)
    

  Note that these changes might lead to results slightly different from previous versions.
  Note further that the RBE algorithm bioalg(ld) was chosen to be the new default due to its calculational speed. Its accuracy is limited for RBE-weighted doses above 10GyE. For higher dose levels one has to fall back to bioalg(cl).
• bug fixes

Version 1001c (Feb 2011)

• couch tilt
• VOI output overhauled
• dcm2trip included
• bug fixes

Version 1001b (Jan 2011)

• DVH's for RBE, ...

Version 1001a (Oct 2010)

• stubs for OER
• minor modifications

Version 1001 (Feb 2010)

• support for 4D CTs, VOIs, Trafos
• minor modifications

Version 0902b (Oct 2009)

• alpha, beta cubes.
• DVH with median, standard dev., survival distribution.

Version 0902a (Feb 2009)

• export CT number distributions.
• Fletcher-Reeves optimization

Version 0902 (Feb 2009)

• Merged TRiP98 classic (0408a) and TRiP98BEAM (0509g)

Version beam0509g (Feb 2009)

• More improvements in optimization (avoid certain round-off errors), will yield slightly different results from 0509f version.
• Some support for non-congruent/irregular rasters (BEV, optimization)
• Modified energy slice selection (to better cover distal part)
• Export packaging, with base dataset decoupled.
• Support for installation versioning.
• bug fixes

Version beam0509f (Jan 2009)

• Various improvements in optimization (incl. speed), will yield slightly different results from 0509e version.
• bug fixes

Version beam0509e (May 2007)

• rstview support.
• Modif. factor for total reaction cross sections on file.
• External fragmentation cross sections for yield.
• IsoGray import
• Equivalent path output in BEV
• Differential DVH

Version beam0509d (May 2006)

• rstview support.
• Dose ramps with voxel corner check.

Version beam0509c (March 2006)

• Spectra gd ASCII import
• Spectra gd export with N/N0 attenuation/buildup
• gd contours in non-zplanes
• VOI bug fixes (weightfactors, contour number checks).

Version beam0509b (January 2006)

• Bortfeld's optimization method incl. biological dose and 2nd derivative.
• Bug fixes in classical (H2O-based) optimization.
• Start value estimates for incongruent/irregular rasters.
• VOI-specific weights.

Version beam0509 (October 2005)

• plain gradient optimization.
• "exact" low-dose bio algorithm.

Version beam0502 (March 2005)

• Multifield optimization, OAR definition for VOIs
• Choice of algorithms for optimization
• Choice of algorithms for detector signal calculation
• Choice of algorithms for dose calculation
• Faster calculation of biological effects
• Beam modelling including
  • multiple scattering
  • improved fragmentation
• Import and export of CT and dose cubes in CADPlan format
• DVH output with Inhomogeneity and Conformity index

Version 0408a (Jan 2005)