Proposal of a hybrid dosimetry method for improving work efficiency in CT dose management.

IF 1.7 Q3 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING
Radiological Physics and Technology Pub Date : 2025-03-01 Epub Date: 2025-02-07 DOI:10.1007/s12194-025-00881-7
Tomokazu Shohji, Reika Tomioka, Anna Isaka, Ami Yuzawa, Nobutaka Yanano, Ryota Tsukada, Hideki Kato
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引用次数: 0

Abstract

In recent years in JAPAN, with the reform of work styles and the expansion of radiologists' duties, there has been a demand for more work improvement. Among them, many regulations surrounding computed tomography (CT) tasks require a large amount of time and manpower. In this study, we propose a hybrid method between leakage X-ray dosimetry and CT dose index (CTDI) measurement using a CTDI phantom used for CTDI measurement and elucidate the usefulness of the hybrid method. The results of the CTDI phantom generated more scattered radiation in the CT room; therefore, the previously used thoracoabdominal phantom could be replaced with the CTDI phantom. The number of exposures can be reduced by a factor of 15, work hours by 20 min, and the number of workers by two when evaluated as an average of four facilities using the hybrid method. The hybrid method enables the determination of the reproducibility of the output X-ray dose during leakage X-ray dosimetry, thereby ensuring the reliability of periodic leakage X-ray dosimetry. The use of the proposed hybrid method is reasonable because it is effective for work improvement, such as reducing work time and the number of workers.

提出一种提高CT剂量管理工作效率的混合剂量学方法。
近年来,在日本,随着工作方式的改革和放射科医生职责的扩大,人们对放射科医生的工作提出了更多的改进要求。其中,围绕计算机断层扫描(CT)任务的许多规定需要大量的时间和人力。在这项研究中,我们提出了一种泄漏x射线剂量法和CT剂量指数(CTDI)测量的混合方法,使用用于CTDI测量的CTDI模体,并阐明了混合方法的实用性。结果CTDI虚影在CT室内产生较多的散射辐射;因此,以前使用的胸腹假体可以用CTDI假体代替。当使用混合方法评估平均四个设施时,暴露次数可以减少15倍,工作时间减少20分钟,工人人数减少2人。该混合方法能够确定泄漏x射线剂量测定过程中输出x射线剂量的可重复性,从而保证了周期性泄漏x射线剂量测定的可靠性。所提出的混合方法的使用是合理的,因为它对工作改进是有效的,例如减少工作时间和工人数量。
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
Radiological Physics and Technology
Radiological Physics and Technology RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING-
CiteScore
3.00
自引率
12.50%
发文量
40
期刊介绍: The purpose of the journal Radiological Physics and Technology is to provide a forum for sharing new knowledge related to research and development in radiological science and technology, including medical physics and radiological technology in diagnostic radiology, nuclear medicine, and radiation therapy among many other radiological disciplines, as well as to contribute to progress and improvement in medical practice and patient health care.
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