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ID 51523
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著者
Fukumoto, Wataru 大学院医系科学研究科附属死因究明教育研究センター 広大研究者総覧
Nagaoka, Mami
Higaki, Toru 大学院先進理工系科学研究科 広大研究者総覧
Nakamura, Yuko 大学院医系科学研究科(医) 広大研究者総覧
Oostveen, Luuk
Klein, Willemijn
Prokop, Mathias
Awai, Kazuo 大学院医系科学研究科(医) 広大研究者総覧
キーワード
Coronary artery calcium scores
Ultra-high-resolution CT
Cadaver
抄録(英)
Objectives
In this phantom- and cadaver study we investigated the differences of coronary artery calcium (CAC) volume on ultra-high-resolution computed tomography (U-HRCT) scans and conventional CT.

Methods
We scanned a coronary calcium phantom and the coronary arteries of five cadavers using U-HRCT in normal- and super-high resolution (NR, SHR) mode. The NR mode was similar to conventional CT; 896 detector channels, a matrix size of 512, and a slice thickness of 0.5 mm were applied. In SHR mode, we used 1792 detector channels, a matrix size of 1024, and a slice thickness of 0.25 mm. The CAC volume on NR- and SHR images were recorded. Differences in the physical- and the calculated CAC volume were defined as the error value and compared between NR- and SHR images of the phantom. Differences between the CAC volume on NR- and SHR scans of the cadavers were also recorded.

Results
The mean error value was lower on SHR- than NR images of the phantom (14.0 %, SD 11.1 vs 20.1 %, SD 15.2, p = 0.01). The mean CAC volume was significantly higher on SHR- than NR images of the cadavers (153.4 mm3, SD 161.0 vs 144.7 mm3, SD 164.8, p < 0.01).

Conclusions
As small calcifications were more clearly visualized on U-HRCT images in SHR mode than on conventional (NR) CT scans, SHR imaging may facilitate the accurate quantification of the CAC.
掲載誌名
European Journal of Radiology Open
7巻
開始ページ
100253
出版年月日
2020-09-08
出版者
Elsevier
ISSN
2352-0477
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
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application/pdf
著者版フラグ
publisher
権利情報
© 2020 The Authors. This is an open access article under the CC BY-NC-ND license.
関連情報URL
部局名
先進理工系科学研究科
医系科学研究科
病院