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ID 46495
本文ファイル
著者
Bayasgalan, Enkhjargal
Higaki, Toru 大学院医歯薬保健学研究科(医) 広大研究者総覧
Fukumoto, Wataru
Nakamura, Yuko
Awai, Kazuo 大学院医歯薬保健学研究科(医) 広大研究者総覧
キーワード
liver tumor
hyper-dense nodule
dual-energy CT
Phantom
NDC
医学
抄録(英)
The purpose of this study was to evaluate the detectability of hyper-dense nodules using dual-energy computed tomography (DECT) in a phantom. Arterial-phase hepatic dynamic computed tomography (CT) was conducted on small, medium, and large liver-simulating phantoms harboring simulated hypervascular tumors. We acquired 150 single-energy CT (SECT) and 150 DECT scans and measured the contrast-to-noise ratio (CNR) of the nodules. Alternative free response receiver observer characteristic (AFROC) curves of five radiologists’ readings of the SECT and DECT scans were compared to assess detectability of the hyper-dense nodules. For all phantoms, the CNR of nodules measured using DECT was significantly higher than that by using SECT (p < 0.001, all). In the AFROC study, DECT showed a significantly larger area under the curve than that with SECT (0.778 vs 0.499, p = 0.012). Detectability of high-density nodules was better with DECT scans than with SECT scans.
掲載誌名
Hiroshima Journal of Medical Sciences
67巻
3号
開始ページ
63
終了ページ
69
出版年月日
2018-09
出版者
Hiroshima University Medical Press
ISSN
0018-2052
NCID
言語
英語
NII資源タイプ
紀要論文
広大資料タイプ
学内刊行物(紀要等)
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
publisher
権利情報
Copyright (c) 2018 Hiroshima University Medical Press
部局名
医歯薬保健学研究科
病院
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