International standardization of four dimensional radiotherapy system

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Other Title
  • 4次元放射線治療システムに関する国際標準化
  • 4次元放射線治療システムに関する国際標準化 : 照射効果の向上と安全性の確保
  • 4ジゲン ホウシャセン チリョウ システム ニ カンスル コクサイ ヒョウジュンカ : ショウシャ コウカ ノ コウジョウ ト アンゼンセイ ノ カクホ
  • ― 照射効果の向上と安全性の確保 ―
  • — Enhancement of effects of irradiation and assurance of safety —

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Description

In radiation therapy for cancer, there are possibilities of changing of positions of the affected area during irradiation due to respiration of a patient. In order to enhance effects of irradiation for the affected area and minimize damages to the surrounding normal tissues, four dimensional radiotherapy (4DRT), which can take into account time variation of the three-dimensional position of the affected area, has been recently developed, and has been achieving significant therapeutic effect. We have proposed the International Electrotechnical Commission (IEC) standards including technical requirements of the safety aspects of the systems which realize this 4DRT, taking into account the time variation. The reason for the proposal is that international standardization will be very effective to ensure safety of 4DRT, and international standards of IEC will have compelling force if regulatory agencies refer to them. The purpose of this paper is to summarize the analysis of the strategy in a precedent endeavor toward international standardization of the 4DRT systems, for which demands are increasing. The main point of the strategy is forming an international consensus by bringing together the opinions of specialists from various fields from a clinical point of view, focusing on the international standardization of the technical requirements of the safety aspects of the 4DRT. Based on such a strategy, we will promote developing new standards by evaluating the overall safety of the 4DRT systems for further expanding use, in addition to updating existing standards of particular equipment which constitute the 4DRT systems.

Journal

  • Synthesiology

    Synthesiology 7 (4), 238-246, 2014

    National Institute of Advanced Industrial Science and Technology

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