Optimization of beam quality for lumbar spine imaging with heavy metal filters: a phantom model study.

IF 0.7 4区环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES

Radiation protection dosimetry Pub Date : 2025-09-04 DOI:10.1093/rpd/ncaf100

Chihiro Koide, Seiichi Murakami

引用次数: 0

Abstract

In radiological imaging, much research has been conducted on tube voltage and additional filters to reduce radiation exposure. In this study, the usefulness of heavy metal filters in lumbar spine imaging to maintain image quality and reduce radiation dose was investigated. A human-body phantom was irradiated with various combinations of tube voltages (70, 75, 80, 85, and 90 kV) and filters (Cu, Gd, Ho, Yb, W). For all beam qualities, the mAs value was adjusted so that the amount of CsI fluorescence at each dose after passing through the phantom was the same, and the contrast-to-noise ratio (CNR) and entrance-surface air dose (ESD) were measured. At 80 kV-Gd, the ESD was reduced by 34% while maintaining the CNR. The results showed that 80 kV-Gd gave the optimal beam quality for anterior-posterior lumbar spine imaging of patients with a standard body type.

查看原文本刊更多论文

利用重金属滤光片优化腰椎成像的光束质量：一项幻影模型研究。

在放射成像中，已经对管电压和附加滤波器进行了大量研究，以减少辐射暴露。在这项研究中，研究了重金属滤光片在腰椎成像中保持图像质量和降低辐射剂量的作用。用不同的管电压（70,75,80,85和90kv）和滤波器（Cu, Gd, Ho, Yb， W）组合照射人体幻影。对于所有光束质量，调整mAs值，使CsI荧光在每个剂量下通过模体后的量相同，并测量对比噪声比（CNR）和入口-表面空气剂量（ESD）。在80 kV-Gd时，ESD降低了34%，同时保持了CNR。结果表明，80 kV-Gd为标准体型患者腰椎前后位成像提供了最佳光束质量。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Radiation protection dosimetry 环境科学-公共卫生、环境卫生与职业卫生

CiteScore

1.40

自引率

10.00%

发文量

223

审稿时长

6-12 weeks

期刊介绍： Radiation Protection Dosimetry covers all aspects of personal and environmental dosimetry and monitoring, for both ionising and non-ionising radiations. This includes biological aspects, physical concepts, biophysical dosimetry, external and internal personal dosimetry and monitoring, environmental and workplace monitoring, accident dosimetry, and dosimetry related to the protection of patients. Particular emphasis is placed on papers covering the fundamentals of dosimetry; units, radiation quantities and conversion factors. Papers covering archaeological dating are included only if the fundamental measurement method or technique, such as thermoluminescence, has direct application to personal dosimetry measurements. Papers covering the dosimetric aspects of radon or other naturally occurring radioactive materials and low level radiation are included. Animal experiments and ecological sample measurements are not included unless there is a significant relevant content reason.