Retrospective Study
Copyright ©The Author(s) 2025. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Radiol. Feb 28, 2025; 17(2): 102462
Published online Feb 28, 2025. doi: 10.4329/wjr.v17.i2.102462
Equilibrium phase images of the liver using a contrast-enhancement boost instead of the portal vein phase
Yuji Tachibana, Kenichiro Otsuka, Tomoaki Shiroo, Yoshiki Asayama
Yuji Tachibana, Department of Radiological Sciences, Faculty of Medicine, Fukuoka International University of Health and Welfare, Fukuoka 814-0001, Japan
Yuji Tachibana, Kenichiro Otsuka, Yoshiki Asayama, Department of Radiology, Faculty of Medicine, Oita University, Yufu 879-5593, Oita, Japan
Tomoaki Shiroo, Department of Radiology, Division of Medical Technology, Oita University Hospital, Yufu 879-5593, Oita, Japan
Author contributions: Tachibana Y and Asayama Y designed the study; Tachibana Y contributed to the writing of the manuscript; Tachibana Y, Otsuka K, and Asayama Y contributed to the analysis of the data; Shiroo T contributed to data collection; and all authors read and approved the final manuscript.
Institutional review board statement: This study was approved by the Medical Ethics Committee of Oita University Hospital Institutional Review Board, approval No. 2643.
Informed consent statement: All procedures performed in this study involving human participants were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
Conflict-of-interest statement: All the authors report no relevant conflicts of interest for this article.
Data sharing statement: Technical appendix, statistical code, and dataset available from the corresponding author at asayama@oita-u.ac.jp. Participants gave informed consent was not obtained but the presented data are anonymized and risk of identification is low.
Open Access: This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: https://creativecommons.org/Licenses/by-nc/4.0/
Corresponding author: Yoshiki Asayama, Department of Radiology, Faculty of Medicine, Oita University, 1-1, Idaigaoka, Hasama-machi, Yufu 879-5593, Oita, Japan. asayama@oita-u.ac.jp
Received: October 21, 2024
Revised: January 22, 2025
Accepted: February 14, 2025
Published online: February 28, 2025
Processing time: 131 Days and 1.7 Hours
Core Tip

Core Tip: The aim of this study was to evaluate the contrast enhancement boost method of enhancing equilibrium phase (EP) computed tomography images in liver imaging compared to portal venous phase and EP images, and to reduce radiation dose by switching from triphasic to biphasic imaging. The results show that contrast enhancement boost of EP images have the same or better image quality as portal venous phase images, suggesting that a reduction in radiation dose is possible.