Study of SiPM segmentation in ToF-PET from the optical perspective
Introduction of SiPM sensor in positron emission tomography (PET) technique has allowed the use of time-of-flight (ToF) information, which improves the imaging technique performance. However, there is still a lot of room for improvement. One approach to increase the image resolution, consists on seg...
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| Tipo de recurso: | tesis de maestría |
| Fecha de publicación: | 2021 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/369246 |
| Acceso en línea: | https://hdl.handle.net/2117/369246 |
| Access Level: | acceso abierto |
| Palabra clave: | Optics Photonics silicon photomultiplier scintillator crystal simulation positron emmission tomography tof-pet Òptica Fotònica Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica::Fotònica |
| Sumario: | Introduction of SiPM sensor in positron emission tomography (PET) technique has allowed the use of time-of-flight (ToF) information, which improves the imaging technique performance. However, there is still a lot of room for improvement. One approach to increase the image resolution, consists on segmenting the SiPM area into smaller areas and apply an algorithm to recover the maximum possible information. In the literature, it has been shown that this approach can increase the coincidence time resolution (CTR). Here, we study how segmenting the sensor area into smaller sensors affects the time resolution from an optical perspective. In order to accomplish this, we simulated different segmentations and studied how the segmentation a↵ects the CTR of the system. Results show that the CTR doesn’t degrade significantly when segmenting the sensor in a few channels. Therefore, it can be expected an increase on the total CTR if a increase on the electronics performance can be achieved. |
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