Search research articles

关于 JoVE

概览领导团队博客 JoVE 帮助中心

作者

出版流程编辑委员会范围与政策同行评审常见问题投稿

图书馆员

用户评价订阅访问资源图书馆顾问委员会常见问题

研究

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments 存档

教育

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual 教师资源中心教师网站

使用条款与条件

相关概念视频

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序

Same author

Pathways to Care, Out- of- Pocket Expenditure, and Associated Factors Among Breast Cancer Patients in Kerala, India: A Hospital-Based Cross- Sectional Study.

Asian Pacific journal of cancer prevention : APJCP·2026

Same author

Analysis of alpha induced secondary proton production in <sup>nat</sup>Ni-reactor structural material.

Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine·2025

Same author

Novel insights into GaN-HEMT behaviour under multi-particle irradiation.

Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine·2025

Same author

MIR dosimetry using CR-39 based α spectroscopy.

Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine·2025

Same author

Nuclear reaction transmutation doping in GaN-HEMT MOSFETs.

Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine·2025

Same author

Integral cross section measurement of the <sup>19</sup>F( γ, n)<sup>18</sup>F reaction for 12-20 MeV bremsstrahlung photons.

Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine·2025

Search research articles

相关实验视频

Updated: Jul 16, 2025

Evaluating Targeting Accuracy in the Focal Plane for an Ultrasound-guided High-intensity Focused Ultrasound Phased-array System

Evaluating Targeting Accuracy in the Focal Plane for an Ultrasound-guided High-intensity Focused Ultrasound Phased-array System

Published on: March 6, 2019

对线性加速器的光束焦点偏移的确定:一个幻影减小方法.

Silpa AjayKumar^1,2, Arathi C¹, Resmi K B¹

¹Radiation Oncology Department, Malabar Cancer Centre, Kerala, India.

The Gulf journal of oncology

|September 21, 2023

概括

此摘要是机器生成的。

精确的放射治疗需要验证光束的焦点点. 本研究介绍了一种基于电子门户成像设备 (EPID) 的方法,用于测量光束焦点偏移,确保治疗的准确性和安全性.

关键词:

克林尼克斯维尔萨高清.质量管理 QA 质量管理一个焦点,一个焦点. 在EPID中,我们可以使用EPID.

更多相关视频

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging

Published on: September 11, 2011

Automated Delivery of Microfabricated Targets for Intense Laser Irradiation Experiments

Automated Delivery of Microfabricated Targets for Intense Laser Irradiation Experiments

Published on: January 28, 2021

相关实验视频

Last Updated: Jul 16, 2025

Evaluating Targeting Accuracy in the Focal Plane for an Ultrasound-guided High-intensity Focused Ultrasound Phased-array System

Evaluating Targeting Accuracy in the Focal Plane for an Ultrasound-guided High-intensity Focused Ultrasound Phased-array System

Published on: March 6, 2019

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging

Published on: September 11, 2011

Automated Delivery of Microfabricated Targets for Intense Laser Irradiation Experiments

Automated Delivery of Microfabricated Targets for Intense Laser Irradiation Experiments

Published on: January 28, 2021

科学领域:

医学物理医学物理
辐射瘤学辐射瘤学
辐射疗法质量保证辐射疗法质量保证

背景情况:

放射治疗的有效性取决于精确的光束焦点定位.
定期检查光束焦点对于患者的安全和治疗的有效性至关重要.
现有的光束焦点偏移测量方法可能很复杂.

研究的目的:

开发和验证基于电子门户成像设备 (EPID) 的技术,用于测量光束焦点偏移.
评估拟议的基于EPID的方法的准确性和可重复性.
为放射治疗中的常规质量保证提供可靠的工具.

主要方法:

使用和多叶聚合器 (MLC) 的组合来创建对称的场.
采用聚合器旋转 (180°或360°) 来确定辐射同中心.
对线性加速器 (Varian ClinaciX,Elekta Versa HD) 的光束焦点偏移等同中心之间的差异进行了相关联.

主要成果:

基于EPID的方法与0.00923±0.009360毫米 (SD) 内的共旋半阴影调制 (CPM) 技术显示一致.
该方法表现出极好的可重复性,变化在0.0365毫米 (SD) 之内.
对于缺乏双套的线性加速器 (例如,Elekta Agility®头) 成功实施了一种修改后的方法.

结论:

开发的基于EPID的技术对于测量光束焦点偏移是准确和可重复的.
这种方法适用于常规质量保证 (QA) 协议.
确保光束的焦点偏移处于耐受性范围内,可以提高放射治疗的精度.