期刊文献+

Uncertainties of "in v/vo" Dosimetry Using Semiconductors

Uncertainties of "in v/vo" Dosimetry Using Semiconductors
下载PDF
导出
摘要 The purpose of the present study is to evaluate the uncertainties of in vivo dosimetry measured with diode detectors for conformal radiation therapy techniques in order to define appropriate tolerance levels for pelvis and breast treatment in MEIH (Middle East Institute of Health). The present work is carried out on 30-472 and 30-473 diode detectors irradiated by 4 and 15MV photon beams of a medical linear accelerator Synergy from ELEKTA. Dose computation is performed with Pinnacle 7.4 k treatment planning system. First, an estimation of the uncertainties in a simple geometric case, using a water-equivalent solid phantom is done. Secondly, each treatment parameter such as field size, beam angle, beam modifiers and source-skin distance is evaluated in order to simulate the conformal radiation treatments used in the present institution for the main anatomical sites. Interpretation of entrance dose in-vivo measurements requires the determination of appropriate tolerance levels. Indeed, the authors found that the 5% action level proposed in the literature underestimates the uncertainties in the treatment process. A method for the evaluation of tolerance/action levels related to the different anatomical sites is developed. By the end of the present study the authors have developed an integrated monitoring system that offers accurate information about the dose received by patients.
机构地区 Faculty of Sciences
出处 《Journal of Life Sciences》 2015年第3期120-126,共7页 生命科学(英文版)
关键词 In vivo dosimetry conformal radiation therapy entrance dose diode detectors UNCERTAINTIES tolerance levels integratedsystem. 剂量测量 不确定性 半导体 放射治疗 治疗计划系统 解剖部位 加速器照射 光束角
  • 相关文献

参考文献4

  • 1Mayles, W. P. M. 2007. "The Glasgow Incident a Physicist's Reflections." Clin. Oneal. 19: 47.
  • 2Williams, M. V. 2007. "Radiotherapy Near Misses, Incidents and Errors: Radiotherapy Incident in Glasgow." Clin. Oneal. 19: 13.
  • 3Derreumaux, S., Etard, c., Huet, C., Trompier, F., Clairand, I., and Bottollier-Depois, J.F. et al. 2008. "Lessons from Recent Accidents in Radiation Therapy in France." Radiat. Prot. Dosim. 131 (1): 130-5.
  • 4International Commission on Radiological Protection, ICRP Publication 112, 2009. "Preventing Accidental Exposures from New External Beam Radiation Therapy Technologies." Ann. ICRP 39 (4): 186.

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部