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Measurements of X-ray imaging performance of granular phosphors with direct-coupled CMOS sensors
DC Field | Value | Language |
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dc.contributor.author | 김정민 | - |
dc.date.accessioned | 2015-05-19T17:31:38Z | - |
dc.date.available | 2015-05-19T17:31:38Z | - |
dc.date.issued | 2008 | - |
dc.identifier.issn | 0018-9499 | - |
dc.identifier.uri | https://ir.ymlib.yonsei.ac.kr/handle/22282913/108313 | - |
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 photodiode array with a pitch of 48 mum 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.description.statementOfResponsibility | open | - |
dc.format.extent | 1338~1343 | - |
dc.relation.isPartOf | IEEE TRANSACTIONS ON NUCLEAR SCIENCE | - |
dc.rights | CC BY-NC-ND 2.0 KR | - |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/2.0/kr/ | - |
dc.title | Measurements of X-ray imaging performance of granular phosphors with direct-coupled CMOS sensors | - |
dc.type | Article | - |
dc.contributor.college | College of Medicine (의과대학) | - |
dc.contributor.department | Yonsei Biomedical Research Center (연세의생명연구원) | - |
dc.contributor.googleauthor | Min Kook Cho | - |
dc.contributor.googleauthor | Ho Kyung Kim | - |
dc.contributor.googleauthor | Thorsten Graeve | - |
dc.contributor.googleauthor | Seung Man Yun | - |
dc.contributor.googleauthor | Chang Hwy Lim | - |
dc.contributor.googleauthor | Hyosung Cho | - |
dc.contributor.googleauthor | Jung-Min Kim | - |
dc.admin.author | false | - |
dc.admin.mapping | false | - |
dc.contributor.localId | A00886 | - |
dc.relation.journalcode | J01029 | - |
dc.identifier.pmid | Detective quantum efficiency ; digital radiography ; granular phosphor ; modulation-transfer function ; noise-power spectrum | - |
dc.subject.keyword | Detective quantum efficiency | - |
dc.subject.keyword | digital radiography | - |
dc.subject.keyword | granular phosphor | - |
dc.subject.keyword | modulation-transfer function | - |
dc.subject.keyword | noise-power spectrum | - |
dc.contributor.alternativeName | Kim, Jung Min | - |
dc.contributor.affiliatedAuthor | Kim, Jung Min | - |
dc.rights.accessRights | free | - |
dc.citation.volume | 55 | - |
dc.citation.number | 3 | - |
dc.citation.startPage | 1338 | - |
dc.citation.endPage | 1343 | - |
dc.identifier.bibliographicCitation | IEEE TRANSACTIONS ON NUCLEAR SCIENCE, Vol.55(3) : 1338-1343, 2008 | - |
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