Measurements of X-ray imaging performance of granular phosphors with direct-coupled CMOS sensors
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Cho, Min Kook | - |
dc.contributor.author | Kim, Ho Kyung | - |
dc.contributor.author | Graeve, Thorsten | - |
dc.contributor.author | Yum, Seung Man | - |
dc.contributor.author | Lim, Chang Hwy | - |
dc.contributor.author | Cho, Hyosung | - |
dc.contributor.author | Kim, Jung-Min | - |
dc.date.accessioned | 2021-09-09T07:56:44Z | - |
dc.date.available | 2021-09-09T07:56:44Z | - |
dc.date.created | 2021-06-10 | - |
dc.date.issued | 2008-06 | - |
dc.identifier.issn | 0018-9499 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/123480 | - |
dc.description.abstract | For Gd2O2S:Tb granular phosphor screens having a wide range of mass thicknesses, we have investigated the fundamental imaging performance in terms of modulation-transfer function (MTF), noise-power spectrum (NPS) and detective quantum efficiency (DQE). As an optical photon readout device, a CMOS phatodiode array with a pitch of 48 mu m was used. Under the representative radiation quality, RQA 5, recommended by the IEC (International Electrotechnical Commission, Report 1267), the MTF was measured using a slanted-slit method to avoid aliasing and the NPS was determined by two-dimensional (2D) Fourier analysis of white images. The DQE was assessed from the measured MTF, NPS and the estimated photon fluence. Figure-of-merit (FOM) curves are presented to describe the tradeoff between the X-ray sensitivity and spatial resolution of screens as a function of mass thickness. This study will be useful for the selection guidance of Gd2O2S:Tb phosphors for the relevant imaging tasks of digital radiography. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC | - |
dc.subject | DETECTIVE QUANTUM EFFICIENCY | - |
dc.subject | DIGITAL RADIOGRAPHY | - |
dc.subject | SCINTILLATORS | - |
dc.subject | SCREENS | - |
dc.subject | SYSTEMS | - |
dc.subject | NOISE | - |
dc.title | Measurements of X-ray imaging performance of granular phosphors with direct-coupled CMOS sensors | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kim, Jung-Min | - |
dc.identifier.doi | 10.1109/TNS.2007.913939 | - |
dc.identifier.wosid | 000256967800061 | - |
dc.identifier.bibliographicCitation | IEEE TRANSACTIONS ON NUCLEAR SCIENCE, v.55, no.3, pp.1338 - 1343 | - |
dc.relation.isPartOf | IEEE TRANSACTIONS ON NUCLEAR SCIENCE | - |
dc.citation.title | IEEE TRANSACTIONS ON NUCLEAR SCIENCE | - |
dc.citation.volume | 55 | - |
dc.citation.number | 3 | - |
dc.citation.startPage | 1338 | - |
dc.citation.endPage | 1343 | - |
dc.type.rims | ART | - |
dc.type.docType | Article; Proceedings Paper | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalResearchArea | Nuclear Science & Technology | - |
dc.relation.journalWebOfScienceCategory | Engineering, Electrical & Electronic | - |
dc.relation.journalWebOfScienceCategory | Nuclear Science & Technology | - |
dc.subject.keywordPlus | DETECTIVE QUANTUM EFFICIENCY | - |
dc.subject.keywordPlus | DIGITAL RADIOGRAPHY | - |
dc.subject.keywordPlus | SCINTILLATORS | - |
dc.subject.keywordPlus | SCREENS | - |
dc.subject.keywordPlus | SYSTEMS | - |
dc.subject.keywordPlus | NOISE | - |
dc.subject.keywordAuthor | detective quantum efficiency | - |
dc.subject.keywordAuthor | digital radiography | - |
dc.subject.keywordAuthor | granular phosphor | - |
dc.subject.keywordAuthor | modulation-transfer function | - |
dc.subject.keywordAuthor | noise-power spectrum | - |
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