由计量仪诱导的浅动力学 (SKIM):一种新的无接触呼吸运动管理方法
James Sohn1, Mitchell Polizzi2, Philip Reed McDonagh2
1Department of Radiation Oncology, Northwestern Memorial Hospital, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA.
Journal of applied clinical medical physics
|September 6, 2023
概括
通过计量仪 (SKIM) 诱导的浅动力学在放射治疗期间显著减少胸部目标运动. 这种无接触方法为肺SBRT提供了灵活和实用的替代传统压缩方法.
科学领域:
- 辐射瘤学 辐射瘤学
- 医学物理 医学物理
- 呼吸运动管理 呼吸运动管理
背景情况:
- 在肺部立体体辐射疗法 (SBRT) 期间管理呼吸运动的传统压缩方法可能具有挑战性,特别是在COVID-19大流行期间.
- 无接触式策略旨在提高患者的舒适性和治疗交付效率.
研究的目的:
- 开发和评估一种非接触式运动管理策略,使用计量仪诱导浅呼吸.
- 为了测试这个假设,即增加呼吸速率可以在没有身体接触的情况下最大限度地降低目标运动量.
主要方法:
- 一项对14名肺部SBRT患者进行的回顾性研究,使用由计量仪诱导的快速浅呼吸 (FSB) (Shallow Kinetics Induced by a Metronome - SKIM).
- 达到FSB的时钟速率为50-60 BPM,相当于每分钟25-30个呼吸周期.
- 使用4DCT数据集评估目标运动量,并与可用的自由呼吸 (FB) 数据进行比较.
主要成果:
- 在14名患者的18个目标上评估了SKIM,与FB在10名患者的12个目标上直接比较.
- 在SKIM下,平均运动幅度为8.2±4.1毫米,而在FB下为14.6±8.5毫米.
- SKIM在整体向量规范,上下和前后方向 (p <0.05) 中显示出运动幅度的显著减少.
结论:
- 与自由呼吸相比,通过计量仪 (SKIM) 诱导的浅动力学显著降低了胸部目标的呼吸运动幅度.
- SKIM提供了一种实用,灵活,易于实施的替代传统压缩技术.
- 这种非接触式方法提高了放射治疗中的患者管理,特别是肺部SBRT.
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