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SUMMARY:Modeling of pixelated and continuous crystals for high-resolution 
 small-animal PET imaging
DTSTART;VALUE=DATE-TIME:20071203T110000Z
DTEND;VALUE=DATE-TIME:20071203T120000Z
DTSTAMP;VALUE=DATE-TIME:20261112T064551Z
UID:indico-event-1596@indico.ific.uv.es
DESCRIPTION:Small-animal imaging is becoming a more and more important too
 l for preclinical studies. As a consequence many different\, dedicated des
 igns for high resolution small-animal PET scanners have been proposed. Wit
 hin our group the YAP-(S)PET scanner\, which is based on pixelated YAP:Ce 
 crystals\, has been designed and has now been commercialized. For a new ge
 neration of such a scanner\, we envision to use a similar design\, i.e. ro
 tating planar detector heads. However\, in order to improve the spatial re
 solution\, we will use continuous crystals which are coupled to the recent
 ly developed Silicon Photomultipliers (SiPM). Within this seminar I am goi
 ng to talk about the modeling of pixelated as well as continuous crystals.
  Building a sophisticated model of the detector is particularly important 
 to make design decisions as well as for iterative image reconstruction alg
 orithms. In the case of pixelated crystals\, I will concentrate on a multi
 -ray method\, which incorporates accurate analytical (geometric) considera
 tions as well as the crystal depth. At the same time\, the method has the 
 potential to model seamlessly other physical aspects such as crystal scatt
 er and positron range. Thus\, it can be considered as an alternative to pu
 rely Monte-Carlo based methods. For continuous crystals\, however\, I am g
 oing to present a Monte-Carlo based approach to set up a system model. An 
 emphasis is set on the recovery of the performance close to the edges of t
 he crystal using a log-likelihood estimation and statistical moments to re
 duce the data.\n\nhttps://indico.ific.uv.es/event/1596/
LOCATION:Edf. Institutos de Investigación Sala Seminarios IFIC
URL:https://indico.ific.uv.es/event/1596/
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