| 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
Ozawa, Shuichi
Yokomachi, Kazushi
Fujioka, Chikako
Kimura, Tomoki
Awai, Kazuo
Nagata, Yasushi
|
| 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) |
RepPractOncolRadiother_25_692.pdf (792.2 KB)
