Questionnaire Survey of Dual-energy Computed Tomography Utilization in Clinical Practice in Japan.

IF 1.8 4区 医学 Q3 MEDICINE, RESEARCH & EXPERIMENTAL
In vivo Pub Date : 2025-07-01 DOI:10.21873/invivo.14036
Shingo Ohira, Junji Mochizuki, Shunsuke Itaya, Tsukasa Kojima, Kazutaka Hoyoshi, Kazuyuki Endo, Nobuo Kitera, Daisuke Sakabe, Masanari Minamitani, Atsuto Katano, Keiichi Nakagawa
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Abstract

Background/aim: Dual-energy computed tomography (DECT) is an advanced imaging modality that enables material differentiation and enhanced diagnostic capabilities. This study aimed to investigate clinical DECT utilization in hospitals through a nationwide questionnaire survey.

Patients and methods: An electronic questionnaire survey was sent to medical staff to investigate the use of DECT in clinical practice at each hospital in Japan. The questionnaire consisted of two parts: the first part asked for general information about the hospital, and the second asked for the detailed utilization of DECT in clinical practice.

Results: A total of 231 responses were analyzed, among which 176 hospitals had 252 DECT scanners. Most DECTs (92.5%) were used in CT departments, while 6%, 1.2%, and 0.4% scanners were used in emergency, radiotherapy, and angiography departments, respectively. Without a contrast-enhanced agent (CEA), the examinations using DECT were mostly performed for the spine, extremities, and head regions, whereas with CEA they were performed for the chest, abdomen, and vasculature regions. The virtual monochromatic images (VMI) were most frequently reconstructed in clinical practice for both without (69.0%) and with (88.9%) CEA, and calcium and iodine density images were the next most used in examinations without CEA (22.6%) and with CEA (50.8%), respectively. The iodine reduction using low-keV VMI was performed in a 36% DECT scanner.

Conclusion: The clinical utilization of DECT, including the type of DECT scanner, department of installation, scanned objects, and reconstructed images varied considerably across hospitals.

日本临床双能计算机断层扫描应用的问卷调查。
背景/目的:双能计算机断层扫描(DECT)是一种先进的成像方式,可以实现物质鉴别和增强诊断能力。本研究旨在通过问卷调查,了解医院临床DECT的使用情况。患者和方法:向医务人员发送电子问卷调查,以调查日本每家医院在临床实践中使用DECT的情况。问卷由两部分组成:第一部分是关于医院的一般情况,第二部分是关于DECT在临床应用的详细情况。结果:共分析了231份回复,其中176家医院拥有252台DECT扫描仪。大多数dect(92.5%)用于CT科,急诊科、放疗科和血管造影科分别为6%、1.2%和0.4%。在不使用对比增强剂(CEA)的情况下,DECT检查主要用于脊柱、四肢和头部区域,而使用对比增强剂(CEA)时,DECT检查主要用于胸部、腹部和血管区域。无CEA(69.0%)和有CEA(88.9%)时,虚拟单色图像(VMI)的重建频率最高,无CEA(22.6%)和有CEA(50.8%)时,钙和碘密度图像的重建频率次之。使用低电压VMI在36% DECT扫描仪上进行碘还原。结论:不同医院DECT的临床应用,包括DECT扫描仪的类型、安装科室、扫描对象、重建图像等方面存在较大差异。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
In vivo
In vivo 医学-医学:研究与实验
CiteScore
4.20
自引率
4.30%
发文量
330
审稿时长
3-8 weeks
期刊介绍: IN VIVO is an international peer-reviewed journal designed to bring together original high quality works and reviews on experimental and clinical biomedical research within the frames of physiology, pathology and disease management. The topics of IN VIVO include: 1. Experimental development and application of new diagnostic and therapeutic procedures; 2. Pharmacological and toxicological evaluation of new drugs, drug combinations and drug delivery systems; 3. Clinical trials; 4. Development and characterization of models of biomedical research; 5. Cancer diagnosis and treatment; 6. Immunotherapy and vaccines; 7. Radiotherapy, Imaging; 8. Tissue engineering, Regenerative medicine; 9. Carcinogenesis.
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