| 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 |
Variability of Repeated Coronary Artery Calcium Scoring and Radiation Dose on 64-slice and 16-slice CT by Prospective Electrocardiograph-triggered Axial and Retrospective Electrocardiograph-gated Spiral CT : A Phantom Study |
|
言語 |
en |
| 作成者 |
Horiguchi, Jun
Kiguchi, Masao
Fujioka, Chikako
Shen, Yun
Arie, Ryuichi
Sunasaka, Kenichi
Kitagawa, Toshiro
Yamamoto, Hideya
Ito, Katsuhide
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| アクセス権 |
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|
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 |
Copyright (c) 2008 AUR Published by Elsevier Inc. |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
CT |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
coronary artery |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
calcium |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
radiation dose |
| 主題 |
|
|
主題Scheme |
NDC |
|
主題 |
490 |
| 内容記述 |
|
|
内容記述 |
Rationale and Objectives: To compare coronary artery calcium scores, the variability and radiation doses on 64-slice and 16-slice CT scanners by both prospective electrocardiograph (ECG)-triggered and retrospective ECG-gated scans. Materials and Methods: Coronary artery models (n=3) with different plaque CT densities (~240 HU, ~600 HU and ~1000 HU) of four sizes (1 mm, 3 mm, 5 mm and 10 mm in length) on a cardiac phantom were scanned three times in 5 heart rate sequences. The tube current-time-products were set to almost the same on all four protocols (32.7 mAs for 64-slice prospective and retrospective scans, 33.3 mAs for 16-slice prospective and retrospective scans). Slice-thickness was set to 2.5 mm in order to keep the radiation dose low. Overlapping reconstruction with 1.25 mm increment was applied on the retrospective ECG-gated scan. Results: The coronary artery calcium scores were not different between the four protocols (one-factor ANOVA, Agatston; p=0.32, volume; p=0.19 and mass; p=0.09). Two-factor factorial ANOVA test revealed that the interscan variability was different between protocols (p<0.01) and scoring algorithms (p<0.01). The average variability of Agatston/volume/mass scoring and effective doses were 64-slice prospective scan: 16%/15%/11% and 0.5 mSv, 64-slice retrospective scan: 11%/11%/8% and 3.7 mSv, 16-slice prospective scan: 20%/18%/13% and 0.6 mSv & 16-slice retrospective scan: 16%/15%/11% and 2.9 to 3.5 mSv (depending on the pitch). Conclusions: Retrospective ECG-gated 64-slice CT showed the lowest variability. Prospective ECG-triggered 64-slice CT, with low radiation dose, shows low variability on coronary artery calcium scoring comparable to retrospective ECG-gated 16-slice CT. |
|
言語 |
en |
| 出版者 |
|
|
出版者 |
Elsevier Science Inc. |
| 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 |
|
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|
識別子タイプ |
DOI |
|
|
関連識別子 |
10.1016/j.acra.2008.03.007 |
| 関連情報 |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
http://dx.doi.org/10.1016/j.acra.2008.03.007 |
| 収録物識別子 |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
1076-6332 |
| 収録物識別子 |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA11053376 |
| 開始ページ |
|
|
開始ページ |
958 |
| 書誌情報 |
Academic Radiology
Academic Radiology
巻 15,
号 8,
p. 958-965,
発行日 2008-08
|
| 旧ID |
25935 |
AcadRadiol_15_958.pdf (664.7 KB)
