Comparison of Noise Power Spectrum Methodologies in Measurements by Using Megavoltage X-ray Energies
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Min, Jung-Whan | - |
dc.contributor.author | Son, Jin-Hyun | - |
dc.contributor.author | Jeong, Hoi-Woun | - |
dc.contributor.author | Kim, Jung-Min | - |
dc.contributor.author | Seoung, Youl-Hun | - |
dc.contributor.author | Son, Soon-Yong | - |
dc.contributor.author | Kim, Ho-Kyung | - |
dc.contributor.author | Kim, Sang-Young | - |
dc.contributor.author | Lee, Do-Wan | - |
dc.contributor.author | Jung, Jae-Yong | - |
dc.contributor.author | Suh, Tae-Suk | - |
dc.contributor.author | Choe, Bo-Young | - |
dc.date.accessioned | 2021-09-06T23:27:32Z | - |
dc.date.available | 2021-09-06T23:27:32Z | - |
dc.date.created | 2021-06-18 | - |
dc.date.issued | 2012-01 | - |
dc.identifier.issn | 0374-4884 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/109181 | - |
dc.description.abstract | The noise power spectrum (NPS) is one of the most general methods for measuring the noise amplitude and the quality of an image acquired from a uniform radiation field. The purpose of this study was to compare different NPS methodologies by using megavoltage X-ray energies. The NPS evaluation methods in diagnostic radiation were applied to therapy using the International Electrotechnical Commission standard (IEC 62220-1). In order to measure the region of interest (ROI) of the NPS, we used the following five factors: the overlapping impact, the non-overlapping impact, the penumbra, the flatness and different ROI sizes. We used NPS from four different types of detectors, the CR-IP (computed radiography image plate: photo-stimulable phosphor screen), the CR-IP-lead (hexalon lead screen), the CR-IP-back [lanex TM fast back screen: {terbium-doped gadolinium oxysulfide granular phosphor screen (Gd2O2S: Tb, 133 mg/cm(2))} + 1-mm-thick copper plate] and the CR-IP-front (lanex TM fast front screen). A Kodak 2000 RT photo-stimulable phosphor-based computed radiographic (CR) system showed that the normalized noise power spectrum (NNPS) curve gradually decreased, in compliance with increasing spatial resolution. In addition, each detector showed a different reactivity of the NPS to megavoltage. The results of multivariate analysis of variance (MANOVA) test (methods x detectors) revealed significant main effects of the methods [F(1, 4) = 53.543, P = 0.001] and of the detectors [F(1, 4) = 17.556, P = 0.001]. The present study revealed that various factors could be employed to produce megavoltage imaging (MVI) of the NPS and as a baseline standard for NPS control in MVI. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | KOREAN PHYSICAL SOC | - |
dc.subject | MODULATION TRANSFER-FUNCTION | - |
dc.subject | IMAGE QUALITY CHARACTERIZATION | - |
dc.subject | DIGITAL RADIOGRAPHIC SYSTEM | - |
dc.subject | DETECTOR PERFORMANCE | - |
dc.title | Comparison of Noise Power Spectrum Methodologies in Measurements by Using Megavoltage X-ray Energies | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kim, Jung-Min | - |
dc.identifier.doi | 10.3938/jkps.60.129 | - |
dc.identifier.scopusid | 2-s2.0-84862867335 | - |
dc.identifier.wosid | 000304094600026 | - |
dc.identifier.bibliographicCitation | JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.60, no.1, pp.129 - 136 | - |
dc.relation.isPartOf | JOURNAL OF THE KOREAN PHYSICAL SOCIETY | - |
dc.citation.title | JOURNAL OF THE KOREAN PHYSICAL SOCIETY | - |
dc.citation.volume | 60 | - |
dc.citation.number | 1 | - |
dc.citation.startPage | 129 | - |
dc.citation.endPage | 136 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.identifier.kciid | ART001628010 | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.description.journalRegisteredClass | kci | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Physics, Multidisciplinary | - |
dc.subject.keywordPlus | MODULATION TRANSFER-FUNCTION | - |
dc.subject.keywordPlus | IMAGE QUALITY CHARACTERIZATION | - |
dc.subject.keywordPlus | DIGITAL RADIOGRAPHIC SYSTEM | - |
dc.subject.keywordPlus | DETECTOR PERFORMANCE | - |
dc.subject.keywordAuthor | Modulation transfer function (MTF) | - |
dc.subject.keywordAuthor | Noise power spectrum (NPS) | - |
dc.subject.keywordAuthor | Megavoltage X-ray imaging (MVI) | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
(02841) 서울특별시 성북구 안암로 14502-3290-1114
COPYRIGHT © 2021 Korea University. All Rights Reserved.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.