Detailed Information

Cited 2 time in webofscience Cited 2 time in scopus
Metadata Downloads

Abdominal CT in patients with arms down positioning: Effect of virtual monoenergetic reconstruction on diagnostic image quality

Authors
Bae, KyungsooJeon, Kyung NyeoKim, Ji EunPark, Sung EunBaek, Hye JinMoon, Jin IlRyu, Kung HwaCho, Eun
Issue Date
Oct-2021
Publisher
SPRINGER
Keywords
Arm; Artifacts; Abdomen; Injuries; Computed X-ray tomography
Citation
ABDOMINAL RADIOLOGY, v.46, no.10, pp.5037 - 5046
Indexed
SCIE
SCOPUS
Journal Title
ABDOMINAL RADIOLOGY
Volume
46
Number
10
Start Page
5037
End Page
5046
URI
https://scholarworks.bwise.kr/gnu/handle/sw.gnu/3170
DOI
10.1007/s00261-021-03195-5
ISSN
2366-004X
Abstract
Purpose To evaluate effect of virtual monoenergetic reconstruction on contrast-enhanced abdominal CT obtained using a dual-layer detector CT (DLCT) in patients with arms-down positioning, in comparison with conventional 120-kVp image. Methods A total of 162 consecutive patients who underwent abdominal CT scans using a DLCT with arms-down positioning were retrospectively enrolled. 120-kVp image and virtual monoenergetic images (VMIs) at 40-100 keV were compared for arm-induced artifact reduction capability and image quality through objective and subjective assessments. Diagnostic performance was compared between VMI with the best quality and 120-kVp image. Results VMIs at 60-100 keV showed significantly lower (p < 0.001) artifact index than 120-kVp image. Subjective severity of arm-induced streak artifacts was significantly (p < 0.001) lower in VMIs at 70-100 keV than in 120-kVp image. CNRs measured in artifact and reference areas were superior (p < 0.05) in 40-70 keV to those in 120 kVp. Overall image quality was superior (p < 0.05) in 60-90 keV to 120 kVp. 70-keV VMI was chosen as the best image by two independent readers. In ROC analysis of lesion detection in the liver, spleen, and kidneys, the AUC was significantly higher for 70-keV VMI (reader 1, 0.962; p = 0.011; reader 2, 0.981; p = 0.012) than that for 120-kVp image (reader 1, 0.891; reader 2, 0.922). Conclusion The70-keV VMI from DLCT could improve abdominal CT images by reducing streak artifacts and increasing image contrast in patients who could not elevated their arms. The 70-keV VMI showed better diagnostic performance than the conventional 120 kVp image.
Files in This Item
There are no files associated with this item.
Appears in
Collections
College of Medicine > Department of Medicine > Journal Articles

qrcode

Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.

Related Researcher

Researcher Jeon, Kyung Nyeo photo

Jeon, Kyung Nyeo
의과대학 (의학과)
Read more

Altmetrics

Total Views & Downloads

BROWSE