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使用近红外摄像头测量用于放射治疗的收缩固定板

Akito S Koganezawa¹, Takuya Wada^2,3, Daiki Hashimoto⁴

¹Robotics and Artificial Intelligence Course, Department of Integrated Science and Engineering, Faculty of Science and Engineering, Teikyo University, 1-1 Toyosatodai, Utsunomiya, Tochigi, 320-8551, Japan. koganezawa.akito.ow@teikyo-u.ac.jp.

Radiological physics and technology

|September 18, 2025

概括

一种新技术使用3D近红外追踪精确测量固定板 (IS) 收缩. 该方法量化材料特性,并提供空间收缩数据,以改善处理和在医疗环境中的应用.

科学领域:

材料科学材料科学材料科学
生物医学工程生物医学工程
医疗成像医学成像

背景情况:

精确测量固定板 (IS) 收缩对于医疗治疗中有效的患者定位至关重要.
现有的方法可能缺乏完全描述IS变形所需的精度和空间分辨率.
了解收缩行为对于优化IS材料的设计和应用至关重要.

研究的目的:

开发和验证一种用于精确,三维 (3D) 测量IS收缩的新技术.
分析不同IS材料 (热塑性塑料和弹性体) 随着时间的推移而产生的收缩特性.
为了可视化和量化收缩的空间分布,以改进材料评估.

主要方法:

使用近红外摄像系统对IS上的多个标记物进行3D跟踪.
测量标记器之间的距离 (IMD) 和三角形面积 (TA) 随着时间的推移.
使用指数函数计算热距离比 (TDR) 和热面积比 (TAR),并可视化初始收缩幅度 (ISA).

主要成果:

对于热塑性 (HFT) 和弹性体 (SF) 板的量化收缩参数 (初始收缩幅度 - ISA,时间常数 - TC).
在水平和垂直标记对之间观察到明显的收缩模式,可能是由于材料特异性和机械力.
证明TDR和TAR对于评估总IS属性是有效的,而ISA可视化提供空间收缩信息.

结论:

开发的3D跟踪技术准确地测量了IS收缩,为材料行为提供了宝贵的见解.
确定了特定材料的收缩特性,强调了特定应用的材料选择的重要性.
该技术提供空间收缩数据,有助于调查处理效应并改善IS性能.

关键词:

弹性聚合物弹性聚合物固定化固定化固定化近红外摄像机近红外摄像机收缩收缩收缩收缩热塑性面具是一种热塑性面具.

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