• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

2022 Fiscal Year Final Research Report

Study of development and application of PVA-KI gel dosimeter for radiation therapy

Research Project

  • PDF
Project/Area Number 19K08210
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 52040:Radiological sciences-related
Research InstitutionFukui University of Technology

Principal Investigator

Sunagawa Takeyoshi  福井工業大学, 工学部, 教授 (60329456)

Project Period (FY) 2019-04-01 – 2023-03-31
Keywords三次元ゲル線量計 / ラジオクロミックゲル線量計 / 放射線治療 / 医学物理学 / 放射線計測 / 放射線可視化技術
Outline of Final Research Achievements

In our laboratory, we added KI to partially saponified PVA aqueous solution and developed a PVA-KI gel dosimeter. PVA-KI gel has reusability that can re-clear the red color by heating. In this study, his PVA-KI gel was prepared using partially saponified PVA and irradiated with X-rays. A UV-Vis spectrophotometer connected to a Peltier temperature control system was used to perform time-varying measurements of absorption spectra and time-resolved measurements of absorbance while heating the irradiated samples. Using this result, we performed a reaction kinetic analysis and clarified the reaction in which the gel dosimeter, which turns red after irradiation, becomes transparent and can be reused by heating, which is a characteristic of the PVA-KI gel dosimeter.

Free Research Field

放射線化学

Academic Significance and Societal Importance of the Research Achievements

PVA-KIゲル線量計は,国産のゲル状化学線量計である.本線量計は医療用の放射線モニタとして現在,新規市場である1~100Gyの領域を測定可能とするものである.本線量計の最大の特徴は,放射線照射し赤に呈色したゲル線量計を加温することにより透明に戻し,再び放射線計測可能な再利用性を持つ点である.現在、再利用性を持つゲル線量計はPVA-KIゲル線量計が唯一である.本研究成果は,この再利用性の反応メカニズムを解明したことであり,本研究成果を基に,より完成度の高いゲル線量計開発の道を切り開いたと考える.

URL: 

Published: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi