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Synthesized effective atomic numbers for commercially available dual-energy CT

https://hiroshima.repo.nii.ac.jp/records/2008746
https://hiroshima.repo.nii.ac.jp/records/2008746
ffaf4f7c-bcd4-45a2-bab0-2f8da1b07f4b
名前 / ファイル ライセンス アクション
RepPractOncolRadiother_25_692.pdf RepPractOncolRadiother_25_692.pdf (792.2 KB)
Item type デフォルトアイテムタイプ_(フル)(1)
公開日 2023-03-18
タイトル
タイトル Synthesized effective atomic numbers for commercially available dual-energy CT
言語 en
作成者 Kawahara, Daisuke

× Kawahara, Daisuke

en Kawahara, Daisuke

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Ozawa, Shuichi

× Ozawa, Shuichi

en Ozawa, Shuichi

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Yokomachi, Kazushi

× Yokomachi, Kazushi

en Yokomachi, Kazushi

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Fujioka, Chikako

× Fujioka, Chikako

en Fujioka, Chikako

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Kimura, Tomoki

× Kimura, Tomoki

en Kimura, Tomoki

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Awai, Kazuo

× Awai, Kazuo

en Awai, Kazuo

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Nagata, Yasushi

× Nagata, Yasushi

en Nagata, Yasushi

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アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
権利情報
権利情報 © 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
権利情報
権利情報 This is not the published version. Please cite only the published version. この論文は出版社版ではありません。引用の際には出版社版をご確認、ご利用ください。
主題
主題Scheme Other
主題 Effective atomic numbers
主題
主題Scheme Other
主題 Dual-energy CT
主題
主題Scheme Other
主題 Beam-hardening
内容記述
内容記述 Purpose: The objective of this study was to assess synthesized effective atomic number (Zeff) values with a new developed tissue characteristic phantom and contrast material of varying iodine concentrations using single-source fast kilovoltage switching dual-energy CT (DECT) scanner. Methods: A newly developed multi energy tissue characterisation CT phantom and an acrylic phantom with various iodine concentrations of were scanned using single-source fast kilovoltage switching DECT (GE-DECT) scanner. The difference between the measured and theoretical values of Zeff were evaluated. Additionally, the difference and coefficient of variation (CV) values of the theoretical and measured values were compared with values obtained with the Canon-DECT scanner that was analysed in our previous study. Results: The average Zeff difference in the Multi-energy phantom was within 4.5%. The average difference of the theoretical and measured Zeff values for the acrylic phantom with variation of iodine concentration was within 3.3%. Compared to the results for the single-source Canon-DECT scanner used in our previous study, the average difference and CV of the theoretical and measured Zeff values obtained with the GE-DECT scanner were markedly smaller. Conclusions: The accuracy of the synthesized Zeff values with GE-DECT had a good agreement with the theoretical Zeff values for the Multi-Energy phantom. The GE-DECT could reduce the noise and the accuracy of the Zeff values than that with Canon-DECT for the varying iodine concentrations of contrast medium. Advances in knowledge: The accuracy and precision of the Zeff values of the contrast medium with the GE-DECT could be sufficient with human equivalent materials.
言語 en
出版者
出版者 Elsevier
言語
言語 eng
資源タイプ
資源タイプ識別子 http://purl.org/coar/resource_type/c_6501
資源タイプ journal article
出版タイプ
出版タイプ AO
出版タイプResource http://purl.org/coar/version/c_b1a7d7d4d402bcce
関連情報
識別子タイプ DOI
関連識別子 10.1016/j.rpor.2020.02.007
関連情報
識別子タイプ DOI
関連識別子 https://doi.org/10.1016/j.rpor.2020.02.007
関連情報
識別子タイプ PMID
関連識別子 32684854
収録物識別子
収録物識別子タイプ ISSN
収録物識別子 1507-1367
開始ページ
開始ページ 692
書誌情報 Reports of Practical Oncology and Radiotherapy
Reports of Practical Oncology and Radiotherapy

巻 25, 号 4, p. 692-697, 発行日 2020
旧ID 50442
備考 Post-print version/PDF may be used in an institutional repository after an embargo period of 12 months. (Published: July–August 2020)
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