Estimation of optimum scintillator thickness of Si-PM detectors for time-of-flight (TOF)-PET
DC Field | Value | Language |
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dc.contributor.author | Nakanishi, Kouhei | - |
dc.contributor.author | Kodani, Kanako | - |
dc.contributor.author | Yeom, Jung Yeol | - |
dc.contributor.author | Yamamoto, Seiichi | - |
dc.date.accessioned | 2021-09-03T07:53:41Z | - |
dc.date.available | 2021-09-03T07:53:41Z | - |
dc.date.created | 2021-06-16 | - |
dc.date.issued | 2017-04 | - |
dc.identifier.issn | 2057-1976 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/83991 | - |
dc.description.abstract | Time-of-flight (TOF) is an effective method for improving signal-to-noise ratio of the images for PET. Basic performance of TOF-PET such as sensitivity, TOF-gain, and energy resolution depends on the scintillator thickness. Hence, determining the appropriate scintillator thickness is crucial when designing TOF-PET systems. However, the optimal thickness for the Lu-based scintillators is often not clear-cut. In this paper, we introduce a new concept (figure of merit, FOM) to evaluate the optimum scintillator thickness with regards to the above factors for a TOF-PET system employing Lu-based scintillators coupled to silicon photomultipliers (Si-PMs). We optically coupled Lu1.9Gd0.1SiO5 (LGSO) scintillators of different thickness (length) to Si-PMs and measured the timing resolutions with a high bandwidth digital oscilloscope. Then we calculated the TOF-gain for each crystal. We also calculated the coincidence detection efficiencies. Finally, for each LGSO length, we evaluated the relative sensitivity with FOMs that take into account the TOF-gain (TOF-sensitivity). From this study, we found that LGSO with 20-25 mm thickness was optimum based on the calculated TOF-sensitivity FOM. We conclude that the evaluation methods and results can provide an objective method in which one may use to determine the optimum thickness of the scintillators for TOF-PET systems. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | IOP PUBLISHING LTD | - |
dc.subject | PET | - |
dc.subject | RESOLUTION | - |
dc.subject | PERFORMANCE | - |
dc.subject | SCANNER | - |
dc.title | Estimation of optimum scintillator thickness of Si-PM detectors for time-of-flight (TOF)-PET | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Yeom, Jung Yeol | - |
dc.identifier.doi | 10.1088/2057-1976/aa635e | - |
dc.identifier.scopusid | 2-s2.0-85085971100 | - |
dc.identifier.wosid | 000411037500028 | - |
dc.identifier.bibliographicCitation | BIOMEDICAL PHYSICS & ENGINEERING EXPRESS, v.3, no.2 | - |
dc.relation.isPartOf | BIOMEDICAL PHYSICS & ENGINEERING EXPRESS | - |
dc.citation.title | BIOMEDICAL PHYSICS & ENGINEERING EXPRESS | - |
dc.citation.volume | 3 | - |
dc.citation.number | 2 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Radiology, Nuclear Medicine & Medical Imaging | - |
dc.relation.journalWebOfScienceCategory | Radiology, Nuclear Medicine & Medical Imaging | - |
dc.subject.keywordPlus | PET | - |
dc.subject.keywordPlus | RESOLUTION | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | SCANNER | - |
dc.subject.keywordAuthor | PET | - |
dc.subject.keywordAuthor | TOF | - |
dc.subject.keywordAuthor | Si-PM | - |
dc.subject.keywordAuthor | LGSO | - |
dc.subject.keywordAuthor | scintillator | - |
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