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Dosimetry of 211At-labeled compounds using molecular imaging and Monte Carlo simulation

Research Project

Project/Area Number 18K15556
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 52040:Radiological sciences-related
Research InstitutionFukushima Medical University

Principal Investigator

Ukon Naoyuki  福島県立医科大学, 公私立大学の部局等, 助教 (70792985)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords核医学治療 / α線 / 分子イメージング / モンテカルロシミュレーション / 線量評価 / 医学物理 / α線治療 / 核医学
Outline of Final Research Achievements

In radionuclide therapy, it is important to estimate the tissue absorbed dose according to the injection activity for treatment planning, evaluation of treatment effect, and prediction of side effects. Especially in radionuclide therapy with alpha emitters, it is necessary to accurately measure the distribution reflecting the localization in the tissue due to the short range of alpha particles. Since the alpha particles of 211At cannot be visualized directly, we have established a method to accurately evaluate the disposition of 211At-labeled compounds using a SPECT system with 123I as a surrogate. By predicting the absorbed dose using Monte Carlo simulation based on the accumulation rate of tissues obtained from the images and their disposition, we have developed a method to evaluate the tissue absorbed dose as a basis for estimating the therapeutic effect and side effects before administering 211At-labeled compounds.

Academic Significance and Societal Importance of the Research Achievements

核医学治療における投与量に応じた組織吸収線量の推定技術の発展はこれまで一定の投与量や体重に応じた投与量により実施されていた核医学治療において、より安全かつ効率的な治療が可能となる。特にα線放出核種による核医学治療は近年様々な核種が用いられ、研究されているが確立された線量評価法は存在しない。本研究の成果により組織内の局在性を反映した分布を正確に反映したモンテカルロシミュレーションによる吸収線量予測を行うことで、化合物を投与する前に治療効果や副作用を推定する根拠となる情報を提示できるようになり、これまで判別のつかなかったより多くの治療が可能となることが示唆され、実診療においても資するものである。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (17 results)

All 2020 2019 2018

All Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (16 results) (of which Int'l Joint Research: 6 results)

  • [Journal Article] Human dosimetry of free 211At and meta-[211At]astatobenzylguanidine (211At-MABG) estimated using preclinical biodistribution from normal mice2020

    • Author(s)
      Ukon Naoyuki、Zhao Songji、Washiyama Kohshin、Oriuchi Noboru、Tan Chengbo、Shimoyama Saki、Aoki Miho、Kubo Hitoshi、Takahashi Kazuhiro、Ito Hiroshi
    • Journal Title

      EJNMMI Physics

      Volume: 7 Issue: 1 Pages: 58-58

    • DOI

      10.1186/s40658-020-00326-7

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Biodistribution and dosimetry studies for the optimization of pre-targeted radionuclide therapy using 211At-labeled modified biotin2020

    • Author(s)
      Naoyuki Ukon, Kohshin Washiyama, Akira Sugiyama, Songji Zhao, Toshifumi Tatsumi, Miho Aoki, Kenzo Yamatsugu, Ken-ichi Nishijima, Saki Shimoyama, Taiki Joho, Noboru Oriuchi, Motomu Kanai, Kazuhiro Takahashi, Tatsuhiko Kodama
    • Organizer
      The 33rd Annual Congress of the European Association of Nuclear Medicine
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 211At標識イミノビオチンを用いたプリターゲティング法の最適化投与間隔による薬物動態評価2020

    • Author(s)
      右近直之、鷲山幸信、杉山暁、巽俊文、山次健三、下山彩希、織内昇、金井求、児玉龍彦、高橋和弘、趙松吉
    • Organizer
      第60回日本核医学会学術総会
    • Related Report
      2020 Annual Research Report
  • [Presentation] コンパニオン診断薬としての123I-MIBGから推定した211At-MABGの線量評価検討2020

    • Author(s)
      右近直之、趙松吉、鷲野弘明、吉永恵一郎、粟生木美穂、西嶋剣一、鷲山幸信、織内昇、高橋和弘、東達也、伊藤浩
    • Organizer
      第60回日本核医学会学術総会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Possibility of 123I-meta-iodobenzylguanidine (123I-MIBG) as a companion diagnostic drug for therapeutic alpha-emitting meta-211At-astato-benzylguanidine (211At-MABG) in normal mice2019

    • Author(s)
      Keiichiro Yoshinaga, Songji Zhao, Komei Washino, Miho Aoki, Ken-ichi Nishijima, Saki Shimoyama, Naoyuki Ukon, Chengbo Tan, Kohshin Washiyama, Kazuhiro Takahashi, Hiroshi Ito,Tatsuya Higashi
    • Organizer
      Society of Nuclear Medicine and Molecular Imaging (SNMMI) 2019 Annual Meeting
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Similarities and differences of dosimetry between meta-[211At]astatobenzylguanidine (211At-MABG) and meta-[123I]iodobenzylguanidine (123I-MIBG) as companion diagnostic drug2019

    • Author(s)
      Naoyuki Ukon, Songji Zhao, Keiichiro Yoshinaga, Komei Washino, Miho Aoki, Ken-ichi Nishijima, Saki Shimoyama, Chengbo Tan, Kohshin Washiyama, Noboru Oriuchi, Kazuhiro Takahashi, Tatsuya Higashi, Hiroshi Ito
    • Organizer
      32nd Annual Congress of the European Association of Nuclear Medicine (EANM)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] An effort to diagnostic and therapeutic nuclear medicine at Fukushima Medical University using two medical cyclotrons2019

    • Author(s)
      Kohshin Washiyama, Miho Aoki, Taiki Joho, Naoyuki Ukon, Ken-ichi Nishijima, Kazuhiro Takahashi, Songji Zhao, Noboru Oriuchi
    • Organizer
      International Symposium on Trends in Radiopharmaceuticals (ISTR-2019)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 小動物用SPECT装置を用いた211Atによる画像化の基礎検討2019

    • Author(s)
      右近 直之、趙 松吉、鷲山 幸信、織内 昇、粟生木 美穂、西嶋 剣一、譚 成博、下山 彩希、久保 均、高橋 和弘、伊藤 浩
    • Organizer
      日本分子イメージング学会第14回学会総会・学術集会
    • Related Report
      2019 Research-status Report
  • [Presentation] Search for TLC procedure of meta-[211At]astatobenzylguanidine ([211At]MABG)2019

    • Author(s)
      粟生木 美穂、西嶋 剣一、鷲山 幸信、城寳 大輝、下山 彩希、右近 直之、趙 松吉、鷲野 弘明、高橋 和弘、東 達也、伊藤 浩
    • Organizer
      第59回日本核医学会学術総会
    • Related Report
      2019 Research-status Report
  • [Presentation] Evaluation of similarities between 123I-MIBG and 211At-MABG distribution in normal mice2019

    • Author(s)
      趙 松吉、吉永 恵一郎、粟生木 美穂、右近 直之、下山 彩希、西嶋 剣一、鷲山 幸信、鷲野 弘明、高橋 和弘、東 達也、伊藤 浩
    • Organizer
      第59回日本核医学会学術総会
    • Related Report
      2019 Research-status Report
  • [Presentation] Biodistribution and dosimetry of free 211At and meta-[211At]astatobenzylguanidine (MABG) in normal mice2019

    • Author(s)
      Naoyuki Ukon, Songji Zhao, Kohshin Washiyama, Noboru Oriuchi, Miho Aoki, Chengbo Tan, Saki Shimoyama, Hitoshi Kubo, Ken-ichi Nishijima, Kazuhiro Takahashi, Hiroshi Itoh
    • Organizer
      The 11th International Symposium on Targeted-Alpha-Therapy (TAT11)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 211Atの画像化への挑戦2019

    • Author(s)
      右近 直之、趙 松吉、鷲山 幸信、織内 昇、粟生木 美穂、西嶋 剣一、譚 成博、下山 彩希、久保 均、高橋 和弘、伊藤 浩
    • Organizer
      第15回小動物インビボイメージング研究会
    • Related Report
      2019 Research-status Report
  • [Presentation] 正常マウスにおけるフリー211Atおよびmeta-[211At t]astatobenzylguanidine (MABG)の体内分布2018

    • Author(s)
      趙松吉, 粟生木美穂, 鷲山幸信, 右近直之, 譚成博, 下山彩希, 久保均、織内昇、高橋和弘、伊藤浩、竹之下誠一
    • Organizer
      第58回日本核医学会学術総会
    • Related Report
      2018 Research-status Report
  • [Presentation] 正常マウスにおけるフリー211Atおよびmeta-[211At]astatobenzylguanidine (MABG)の組織吸収線量評価2018

    • Author(s)
      右近直之, 鷲山幸信, 趙松吉, 織内昇, 粟生木美穂, 譚成博, 下山彩希, 久保均, 高橋和弘, 伊藤浩
    • Organizer
      第58回日本核医学会学術総会
    • Related Report
      2018 Research-status Report
  • [Presentation] 核種ごとのCross Calibration Factor (CCF) 測定は必要か?~小動物用PET/CT装置における検討~2018

    • Author(s)
      右近直之, 趙松吉, 下山彩希, 久保均, 伊藤浩
    • Organizer
      第14回小動物インビボイメージング研究会
    • Related Report
      2018 Research-status Report
  • [Presentation] 正常マウスにおけるフリー211Atおよび211At-MABGの体内分布と組織吸収線量評価2018

    • Author(s)
      右近直之, 鷲山幸信, 趙松吉, 織内昇, 粟生木美穂, 譚成博, 下山彩希, 久保均, 高橋和弘, 伊藤浩
    • Organizer
      第8回核医学画像解析研究会
    • Related Report
      2018 Research-status Report
  • [Presentation] Human internal radiation dose estimation using pharmacokinetics of free 211At and meta-[211At]astatobenzylguanidine (MABG) in normal mice2018

    • Author(s)
      Naoyuki Ukon, Kohshin Washiyama, Zhao Songji, Noboru Oriuchi, Miho Aoki, Chengbo Tan, Saki Shimoyama, Hitoshi Kubo, Kazuhiro Takahashi, Hiroshi Ito
    • Organizer
      The 3rd Int. Symposium of the Network-type Joint Usage/Research Center for Radiation Disaster Medical Science
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research

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Published: 2018-04-23   Modified: 2022-01-27  

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