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SUMMARY:Multi purpose Ultra fast Monte Carlo PET simulator
DTSTART;VALUE=DATE-TIME:20201214T182500Z
DTEND;VALUE=DATE-TIME:20201214T183000Z
DTSTAMP;VALUE=DATE-TIME:20260511T183520Z
UID:indico-contribution-13927@indico.ific.uv.es
DESCRIPTION:Speakers: Pablo Galve Lahoz (Grupo de Física Nuclear\, EMFTEL
  & IPARCOS Universidad Complutense de Madrid\, CEI Moncloa\, Madrid\, Spai
 n)\nAccurate Monte Carlo simulations play a major role in PET corrections 
 and scanner design. We present the Ultra-fast Monte Carlo PET simulator (U
 MC-PET) developed for multiple purposes\, an accurate\, fast and flexible 
 PET simulator. The UMC-PET includes all the relevant physics related to th
 e emission\, transport and detection of the radiation in a PET acquisition
 \, such as positron range\, scatter and attenuation inside the patient\, p
 hoton interaction with the scanner\, and detector response (energy resolut
 ion\, time of flight\, etc.). The simulator accuracy has been extensively 
 tested against other MC PET simulators such as PeneloPET\, obtaining simil
 ar results\, while being more than 3000 times faster. The code can handle 
 arbitrary scanner geometries with simple and intuitive input files. These 
 features allow applying UMC-PET beyond standard MC uses. UMC-PET has been 
 tested to accurately predict scatter and attenuation corrections during re
 construction\, or to compute system response matrix (SRM) for adapting sca
 nner geometries. Furthermore\, the speed of UMC-PET allows for a 3D iterat
 ive reconstruction for complex scanners\, with a projection step based on\
 , on the fly\, raw\, MC calculations with UMC-PET and thus avoiding explic
 it storage of the SRM or physics simplifications. On a single common (500 
 USD) GPU these fully MC reconstructions require a few hours for a scanner 
 with > 1 billion lines of response. This provides not only a useful and fl
 exible gold standard method\, but may become a practical reconstruction ap
 proach if it is combined with variance reduction methods and/or high perfo
 rmance multi-GPU systems.\n\nhttps://indico.ific.uv.es/event/5983/contribu
 tions/13927/
LOCATION:Virtuales
URL:https://indico.ific.uv.es/event/5983/contributions/13927/
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