-- Stefan E. Mueller Department of Information Services and Computing - Computational Science and Institute of Radiation Physics Helmholtz-Zentrum Dresden-Rossendorf Tel: +49 (0351) 260 3847 Stefan.Mueller_at_hzdr.de http://www.hzdr.de Vorstand: Prof. Dr. Sebastian M. Schmidt, Dr. Diana Stiller Vereinsregister: VR 1693 beim Amtsgericht Dresden On Tue, 13 Apr 2021, Mauro Valente wrote: > Dear Simon, > > Although I am a customary FLUKA user, not an expert, I may share with you my > point of view about your question, because I faced exactly the same issue > when trying to compare MC with experimental or calculated dosimetry data. > > As far as I know (FLUKA expert advice should be considered) FLUKA does not > perform gamma index calculation. Nonetheless, the common practice is to > calculate DTA, dose differences and gamma index by independent means > (python/matlab home-made scripts, for example). > > About your question " Is there a way to convert the unit from FLUKA for > DOSE-EQ (pSv/primary) to Gray? - and when please give some hints how to do > it" I may suggest (please, refer & wait for a FLUKA expert advice) to use > your beam current (particles per unit time) to assess a dose rate > normalization. > > Regarding your other question "How do we setup an accelerator in FLUKA? We > need the same accelerator in FLUKA as we use in Eclipse." please let me > comment that FLUKA is not a TPS, it is a general purpose Monte Carlo main > code. The "logic" behind radiation sources/equipment definition is rather > different for TPS and MC codes. When using MC codes you may assess > complete/full radiation transport, hence higher representation accuracy, at > least a priori. But, there is work necessary to define the radiation source. > It is worth mentioning that in the particular case of clinical linacs, there > are some available phase state files representing different linacs, you may > be interested in aimed at saving time & efforts during the simulation > configuration. > > Hope this help, > > Regards, > > Il giorno mar 13 apr 2021 alle ore 16:26 Simon Börger > <simon.boerger_at_tu-ilmenau.de> ha scritto: > > Dear FLUKA experts, > > we wanna compare Dose Distributions from FLUKA and Eclipse from > Varian. But the programms use different units for the dose > distributions - FLUKA in pSv/primary and Eclipse in Gray. We > decided to calculate the gamma index of each distribution and > compare the dose distributions over the gamma index. We have > actually two problems: > > 1.) How do we calculate the gamma index in FLUKA? Is there any > way? and when what are the steps of this way? > > 1.1) Is there a way to convert the unit from FLUKA for DOSE-EQ > (pSv/primary) to Gray? - and when please give some hints how to > do it > > 2.) How do we setup an accelerator in FLUKA? We need the same > accelerator in FLUKA as we use in Eclipse. > > > Many thanks for any help > > Best regards > > Simon Börger > > > > > > > -- > > > *************************************************************************** > *************************************** > *************************************************************************** > *************************************** > > Prof. Mauro Valente, PhD. > > Medical Physics > > IFEG - CONICET & > University of Cordoba > Argentina > > Office 102 - Laboratory > 448 > TE: +54 351 4334050 ext. 102 > FAX: +54 351 4334054 > > > http://www.famaf.unc.edu.ar/~valente/ > > > *************************************************************************** > *************************************** > *************************************************************************** > *************************************** > >
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