DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Ho Kyung | ko |
dc.contributor.author | Yun, Seung Man | ko |
dc.contributor.author | Ko, Jong Soo | ko |
dc.contributor.author | Cho, Gyuseong | ko |
dc.contributor.author | Graeve, Thorsten | ko |
dc.date.accessioned | 2013-03-08T09:04:14Z | - |
dc.date.available | 2013-03-08T09:04:14Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2008-06 | - |
dc.identifier.citation | IEEE TRANSACTIONS ON NUCLEAR SCIENCE, v.55, no.3, pp.1357 - 1366 | - |
dc.identifier.issn | 0018-9499 | - |
dc.identifier.uri | http://hdl.handle.net/10203/92686 | - |
dc.description.abstract | We have modeled the signal and noise propagation in a pixelated scintillator detector by using the cascaded linear-systems transfer theory. The main difference from the conventional homogeneous scintillator detector is the additional x-ray quantum sampling process at the beginning stage of the cascaded model. The additional sampling stage is expressed as a multiplication of the fill factor of the pixelated scintillator both in signal and noise. The numerical simulation shows that, while the detective quantum efficiency (DQE) degrades in the low spatial-frequency band due to the x-ray quantum sampling, the DQE maintains high values in the high-frequency band, which is due to the band-limited modulation-transfer function (MTF) property of the pixelated scintillator. The pixelated scintillator design is relatively insensitive to additive electronic noise in the DQE performance compared to the conventional design. As a potential solution to overcome the reduction of DQE in the low-frequency band with the pixelated scintillator design, we propose a partially pixelated scintillator design, which utilizes the concept of pre-filtering before the sampling process of the incident x-ray quanta. | - |
dc.language | English | - |
dc.publisher | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC | - |
dc.subject | MODULATION TRANSFER-FUNCTION | - |
dc.subject | QUANTUM EFFICIENCY | - |
dc.subject | DIGITAL RADIOGRAPHY | - |
dc.subject | AMORPHOUS SELENIUM | - |
dc.subject | SPATIAL-RESOLUTION | - |
dc.subject | NOISE-PROPAGATION | - |
dc.subject | DESCRIBE NOISE | - |
dc.subject | LARGE-AREA | - |
dc.subject | SYSTEMS | - |
dc.subject | SIGNAL | - |
dc.title | Cascade modeling of pixelated scintillator detectors for x-ray imaging | - |
dc.type | Article | - |
dc.identifier.wosid | 000256967800064 | - |
dc.identifier.scopusid | 2-s2.0-45849144085 | - |
dc.type.rims | ART | - |
dc.citation.volume | 55 | - |
dc.citation.issue | 3 | - |
dc.citation.beginningpage | 1357 | - |
dc.citation.endingpage | 1366 | - |
dc.citation.publicationname | IEEE TRANSACTIONS ON NUCLEAR SCIENCE | - |
dc.identifier.doi | 10.1109/TNS.2008.919260 | - |
dc.contributor.localauthor | Cho, Gyuseong | - |
dc.contributor.nonIdAuthor | Kim, Ho Kyung | - |
dc.contributor.nonIdAuthor | Yun, Seung Man | - |
dc.contributor.nonIdAuthor | Ko, Jong Soo | - |
dc.contributor.nonIdAuthor | Graeve, Thorsten | - |
dc.type.journalArticle | Article; Proceedings Paper | - |
dc.subject.keywordAuthor | cascade model | - |
dc.subject.keywordAuthor | detective quantum efficiency | - |
dc.subject.keywordAuthor | linear-systems transfer theory | - |
dc.subject.keywordAuthor | pixelated scintillator | - |
dc.subject.keywordPlus | MODULATION TRANSFER-FUNCTION | - |
dc.subject.keywordPlus | QUANTUM EFFICIENCY | - |
dc.subject.keywordPlus | DIGITAL RADIOGRAPHY | - |
dc.subject.keywordPlus | AMORPHOUS SELENIUM | - |
dc.subject.keywordPlus | SPATIAL-RESOLUTION | - |
dc.subject.keywordPlus | NOISE-PROPAGATION | - |
dc.subject.keywordPlus | DESCRIBE NOISE | - |
dc.subject.keywordPlus | LARGE-AREA | - |
dc.subject.keywordPlus | SYSTEMS | - |
dc.subject.keywordPlus | SIGNAL | - |
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