fluka in-beam pet simulations. speed up the simulation – bias – activity based-generator –...
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![Page 1: FLUKA in-beam PET simulations. Speed up the simulation – Bias – Activity based-generator – Faster workstation – Cloud-computing](https://reader036.vdocument.in/reader036/viewer/2022082818/56649f065503460f94c1c34f/html5/thumbnails/1.jpg)
FLUKA in-beam PET simulations
![Page 2: FLUKA in-beam PET simulations. Speed up the simulation – Bias – Activity based-generator – Faster workstation – Cloud-computing](https://reader036.vdocument.in/reader036/viewer/2022082818/56649f065503460f94c1c34f/html5/thumbnails/2.jpg)
FLUKA in-beam PET simulations
• Speed up the simulation– Bias– Activity based-generator– Faster workstation– Cloud-computing
![Page 3: FLUKA in-beam PET simulations. Speed up the simulation – Bias – Activity based-generator – Faster workstation – Cloud-computing](https://reader036.vdocument.in/reader036/viewer/2022082818/56649f065503460f94c1c34f/html5/thumbnails/3.jpg)
FLUKA in-beam PET simulations
• Speed up the simulation– Bias– Activity based-generator– Faster workstation– Cloud-computing
![Page 4: FLUKA in-beam PET simulations. Speed up the simulation – Bias – Activity based-generator – Faster workstation – Cloud-computing](https://reader036.vdocument.in/reader036/viewer/2022082818/56649f065503460f94c1c34f/html5/thumbnails/4.jpg)
Hadrontherapy activity-based generator
• Needed components– Hadrons treatment simulation– Activity scoring with time tagging– SOURCE.F file for photons pair generation– Post-processing– Image reconstruction
![Page 5: FLUKA in-beam PET simulations. Speed up the simulation – Bias – Activity based-generator – Faster workstation – Cloud-computing](https://reader036.vdocument.in/reader036/viewer/2022082818/56649f065503460f94c1c34f/html5/thumbnails/5.jpg)
Hadrontherapy activity-based generator
• Needed components– Hadrons treatment simulation– Activity scoring with time tagging– SOURCE.F file for photons pair generation– Post-processing– Image reconstruction
![Page 6: FLUKA in-beam PET simulations. Speed up the simulation – Bias – Activity based-generator – Faster workstation – Cloud-computing](https://reader036.vdocument.in/reader036/viewer/2022082818/56649f065503460f94c1c34f/html5/thumbnails/6.jpg)
Hadrontherapy activity-based generator
• Needed components– Hadrons treatment simulation– Activity scoring with time tagging• Spatial sampling• Time sampling (spills?)• Activity distribution vs annihilation points distribution
per nucleon– Pairs generation vs positrons generation
![Page 7: FLUKA in-beam PET simulations. Speed up the simulation – Bias – Activity based-generator – Faster workstation – Cloud-computing](https://reader036.vdocument.in/reader036/viewer/2022082818/56649f065503460f94c1c34f/html5/thumbnails/7.jpg)
Hadrontherapy activity-based generator
• Needed components– Hadrons treatment simulation– Activity scoring with time tagging– SOURCE.F file for photons pair generation– Post-processing– Image reconstruction
![Page 8: FLUKA in-beam PET simulations. Speed up the simulation – Bias – Activity based-generator – Faster workstation – Cloud-computing](https://reader036.vdocument.in/reader036/viewer/2022082818/56649f065503460f94c1c34f/html5/thumbnails/8.jpg)
Hadrontherapy activity-based generator
• SOURCE.F file for photons pair generation– Spatial and time sampling of activity, “simple”
pairs generation• Input file contains 4D spatial sampling• With REAL*4 for 100x100x100x300 voxel the memory
used is 1.2 GB
– Alternative: activity sampled per nucleon• Input file contains different data per emitter• Positron generation instead of pairs• -> More complete physics
![Page 9: FLUKA in-beam PET simulations. Speed up the simulation – Bias – Activity based-generator – Faster workstation – Cloud-computing](https://reader036.vdocument.in/reader036/viewer/2022082818/56649f065503460f94c1c34f/html5/thumbnails/9.jpg)
Hadrontherapy activity-based generator
• SOURCE.F file for photons pair generation– Random direction generation
![Page 10: FLUKA in-beam PET simulations. Speed up the simulation – Bias – Activity based-generator – Faster workstation – Cloud-computing](https://reader036.vdocument.in/reader036/viewer/2022082818/56649f065503460f94c1c34f/html5/thumbnails/10.jpg)
Hadrontherapy activity-based generator
• SOURCE.F file for photons pair generation– Sample-based activity distribution• Rejection method implemented: picked 4 coordinates
random within the input sampling• Rejection method with the fifth number picked
ok
no
Activity distribution
![Page 11: FLUKA in-beam PET simulations. Speed up the simulation – Bias – Activity based-generator – Faster workstation – Cloud-computing](https://reader036.vdocument.in/reader036/viewer/2022082818/56649f065503460f94c1c34f/html5/thumbnails/11.jpg)
Hadrontherapy activity-based generator
• Results: full proton treatment simulated in about 1h10’
• Deadline per fare la prima ricostruzione: 15 Ottobre 2014