Hello, This is a follow up questions to what was discussed earlier in this link Treatment planning for radiation therapy - #3 by horvathd I’ve got only CT image with no Rtplan and been able to import and convert HU to voxel and finally voxel.vxl is generated. To run usual FLUKA source, I’ve added…

Dear @abdalmalki , The problem is in the particles source. In the way it is, it is not hitting your geometry :slight_smile: Here you can see the particles trajectories after using the USERDUMP card. [Screenshot from 2021-03-29 21-13-10] That’s it. If you put properly the BEAMPOS card it should b…

Dear @abdalmalki , Could you please provide the following files: Flair and input Voxel file Thanks, André

Here you go photon.flair (2.0 KB) photon.inp (1.4 KB) voxel file is huge so that I uploaded it on dropbox, please find it at [image] VOXEL.vxl Shared with Dropbox if the above link doesn’t work, please try the following one [image] VOXEL.zip Shared w…

Dear Abdul, in addition to André’s answer, there are some easier ways to visualize the beam path in FLUKA: You can use a smple USRBIN scoring with BEAMPART particle, or Click the geoviewer’s BEAM object. For more information see slide 15-16 of this lecture: 07_Simple_sources_and_prepro…

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