Development of new devices measuring dose distributions in a tissue equivalent material and incident electron energies for therapeutic electron beams

开发测量组织等效材料中的剂量分布和治疗电子束的入射电子能量的新设备

基本信息

  • 批准号:
    07680528
  • 负责人:
  • 金额:
    $ 1.66万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
  • 财政年份:
    1995
  • 资助国家:
    日本
  • 起止时间:
    1995 至 1996
  • 项目状态:
    已结题

项目摘要

1. A new type of beam-energy monitor has been developed to check the energies of electron beams from radiotherapy accelerators. The monitor consists of a pair of scintillating fibers and photodiode read-out circuits that measure the energy depencence of electron transmission through a wedge-shaped absorber. A linear energy response and 1% accuracy for energy constancy measurements were attained with the monitor. The monitor having advantages of simple mechanical and electronic constructions, small size and low cost is suitable for practical use as a portable device.2. A new type of depth-dose measuring device has been developed for electron beam therapy. The device employs plastic scintillating fiber detectors inserted in a plastic (PMMA) phantom in line along an incident electron beam. Output photons from a fiber, the number of which is proportional to absorbed dose at each depth of the phantom, were converted to an electric signal with a photodiode. Each signal from the photodiode was transmitted to a personal computer through a multi-channel AD converter and processed to draw a depth-dose curve on the computer display. A depth-dose curve could be obtained in a measuring time of 5 sec for each incident electron beam with an energy range between 4 and 21 MeV.The mean electron energies estimated using the curves and a depth-scaling factor for PMMA were consistent with those obtained by conventional depth-dose measurements using an ion chamber and a water phantom. The newly developed device, being simple and not time consuming, is suitable for routine use as a quality assurance tool for therapeutic electron beams.
1.本文介绍了一种用于检测放射治疗加速器电子束能量的新型束流能量监测仪。该监测器由一对双折射光纤和光电二极管读出电路组成,用于测量电子通过楔形吸收体传输的能量依赖性。线性能量响应和1%的能量恒定测量精度达到了监测。该监护仪具有机电结构简单、体积小、成本低等优点,适合作为便携式设备实用.本文介绍了一种用于电子束治疗的新型深度剂量测量装置。该装置采用塑料光纤探测器插入在塑料(PMMA)的幻影在沿着入射电子束。从光纤输出的光子,其数量与在体模的每个深度处的吸收剂量成比例,用光电二极管转换成电信号。光电二极管发出的每个信号通过多通道AD转换器传输到个人计算机,并在计算机显示器上绘制深度-剂量曲线。每个入射电子束的能量范围在4和21 MeV之间,在5秒的测量时间内可以得到一个深度-剂量曲线。使用该曲线和PMMA的深度缩放因子估计的平均电子能量与使用离子室和水模通过传统的深度-剂量测量得到的结果是一致的。新开发的设备,简单,不费时,适合作为治疗电子束的质量保证工具的常规使用。

项目成果

期刊论文数量(18)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Takahiko Aoyama: "A depth-dose measuring device using a multi-channel scintillating fiber array for electron beam therapy" Medical Physics. (to be published).
Takahiko Aoyama:“使用多通道闪烁纤维阵列进行电子束治疗的深度剂量测量装置”医学物理学。
  • DOI:
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  • 影响因子:
    0
  • 作者:
  • 通讯作者:
青山隆彦: "電子線エネルギー簡易測定法の開発" 日本放射線技術学会雑誌. 52. 422-425 (1996)
Takahiko Aoyama:“测量电子束能量的简单方法的开发”日本放射线技术学会杂志 52. 422-425 (1996)。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
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  • 通讯作者:
Takahiko Aoyama: "Simple beam-energy checking devices for electron beams from therapeutic accelerators" Japanese Journal of Radio logical Technology. 52. 422-425 (1996)
Takahiko Aoyama:“用于治疗加速器电子束的简单束能量检查装置”日本放射逻辑技术杂志。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
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  • 通讯作者:
Takahiko Aoyama: "A beam-energy checking device for electron beams from radiotherapy accelerators" KEK Proceedings. 95-1. 284-292 (1995)
Takahiko Aoyama:“放射治疗加速器电子束的束能量检查装置”KEK 论文集。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
Takahiko Aoyama: "Development of a depth-dose measuring device using multi-channel scintillating fiber detectors" Japanese Journal of Radio logical Technology. 53. 231 (1997)
Takahiko Aoyama:“使用多通道闪烁光纤探测器开发深度剂量测量装置”日本放射逻辑技术杂志。
  • DOI:
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  • 影响因子:
    0
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AOYAMA Takahiko其他文献

AOYAMA Takahiko的其他文献

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{{ truncateString('AOYAMA Takahiko', 18)}}的其他基金

Quantitative structure-pharmacokinetic relationships for hemodialysis clearance
血液透析清除率的定量结构-药代动力学关系
  • 批准号:
    20K16094
  • 财政年份:
    2020
  • 资助金额:
    $ 1.66万
  • 项目类别:
    Grant-in-Aid for Early-Career Scientists
Quantitative structure-pharmacokinetic relationship analysis of pyrrole-imidazole polyamides in rats
吡咯-咪唑聚酰胺在大鼠体内的定量结构-药代动力学关系分析
  • 批准号:
    24790174
  • 财政年份:
    2012
  • 资助金额:
    $ 1.66万
  • 项目类别:
    Grant-in-Aid for Young Scientists (B)
Dose evaluation based on in-phantom dosimetry to adult and pediatric patients undergoing diagnostic x-ray examinations
基于体模剂量测定对接受诊断性 X 射线检查的成人和儿童患者进行剂量评估
  • 批准号:
    18510043
  • 财政年份:
    2006
  • 资助金额:
    $ 1.66万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Development of a organ dose measuring system to investigate exposure dose to pediatric patient by diagnostic x rays
开发器官剂量测量系统,通过诊断 X 射线研究儿科患者的暴露剂量
  • 批准号:
    16510034
  • 财政年份:
    2004
  • 资助金额:
    $ 1.66万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
New methods of radiation dosimetry in medicine by using optical fibers
利用光纤进行医学辐射剂量测定的新方法
  • 批准号:
    09680476
  • 财政年份:
    1997
  • 资助金额:
    $ 1.66万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Development of a dual counter type neutron spectrometer for the direct measurement of neutron energy spectra
直接测量中子能谱的双计数器型中子能谱仪的研制
  • 批准号:
    04680228
  • 财政年份:
    1992
  • 资助金额:
    $ 1.66万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)

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Enabling remote medical physics services for medical accelerator quality assurance through a novel, table-top imaging device
通过新颖的桌面成像设备实现远程医学物理服务,以保证医疗加速器的质量
  • 批准号:
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使用 TrueBeam 医疗加速器进行时间门控、高剂量率立体定向放射治疗的开发和剂量学验证
  • 批准号:
    427470-2012
  • 财政年份:
    2012
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    $ 1.66万
  • 项目类别:
    Alexander Graham Bell Canada Graduate Scholarships - Master's
The development of biological and medical accelerator beam applications
生物和医学加速器束应用的发展
  • 批准号:
    249581-2002
  • 财政年份:
    2006
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The development of biological and medical accelerator beam applications
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The development of biological and medical accelerator beam applications
生物和医学加速器束应用的发展
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    249581-2002
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OPTIMIZING PROTON THERAPY AT THE LBL MEDICAL ACCELERATOR
优化 LBL 医疗加速器的质子治疗
  • 批准号:
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  • 财政年份:
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DESIGN OF PROTON MEDICAL ACCELERATOR
质子医疗加速器的设计
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    3491203
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    1985
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先进设计研究,重离子医疗加速器
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    3093390
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