このエントリーをはてなブックマークに追加
ID 46495
file
creator
Bayasgalan, Enkhjargal
Fukumoto, Wataru
Nakamura, Yuko
subject
liver tumor
hyper-dense nodule
dual-energy CT
Phantom
NDC
Medical sciences
abstract
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.
journal title
Hiroshima Journal of Medical Sciences
volume
Volume 67
issue
Issue 3
start page
63
end page
69
date of issued
2018-09
publisher
Hiroshima University Medical Press
issn
0018-2052
ncid
language
eng
nii type
Departmental Bulletin Paper
HU type
Departmental Bulletin Papers
DCMI type
text
format
application/pdf
text version
publisher
rights
Copyright (c) 2018 Hiroshima University Medical Press
department
Graduate School of Biomedical & Health Sciences
University Medical Hospital
他の一覧



Last 12 months's access : ? times
Last 12 months's DL: ? times


This month's access: ? times
This month's DL: ? times