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ORIGINAL RESEARCH article

Front. Nucl. Med.

Sec. Radiopharmacy and Radiochemistry

Volume 5 - 2025 | doi: 10.3389/fnume.2025.1657125

This article is part of the Research TopicThe Shining Era of Radiometals in Nuclear Medicine: Advancement from Bench to BedsideView all 4 articles

Production of 64Cu and 67Cu with accelerator neutrons by deuterons and their separation from zinc

Provisionally accepted
YASUKI  NAGAIYASUKI NAGAI1*Masako  KawabataMasako Kawabata2Hideya  SaekiHideya Saeki2Shoji  MotoishiShoji Motoishi2Kazuyuki  HashimotoKazuyuki Hashimoto3Kazuaki  TsukadaKazuaki Tsukada4Arata  MotomuraArata Motomura5Akio  OhtaAkio Ohta2Naoki  TakashimaNaoki Takashima2Shintaro  HashimotoShintaro Hashimoto3Masatoshi  ItohMasatoshi Itoh4Hidetoshi  KikunagaHidetoshi Kikunaga4Shozo  FurumotoShozo Furumoto4
  • 1Osaka University, Suita, Japan
  • 2Kabushiki Kaisha Chiyoda Technol, Higashiibaraki District, Japan
  • 3Nihon Genshiryoku Kenkyu Kaihatsu Kiko Aomori Kenkyu Kaihatsu Center, Kamikita District, Japan
  • 4Tohoku Daigaku, Sendai, Japan
  • 5Daigaku Kyodo Riyo Kikan Hojin Ko Energy Kasokuki Kenkyu Kiko, Tsukuba, Japan

The final, formatted version of the article will be published soon.

The 64Cu/67Cu pair is an ideal set of theranostic radionuclides for treating patients based on their genetic profiles. We propose a novel production route for this radionuclide pair using accelerator-generated neutrons. We report experimental measurements of the absolute activity and radionuclide purity of 64Cu and 67Cu, produced by irradiating 64Zn and 68Zn with these neutrons. The measured results were consistent with simulated values. 64Cu and 67Cu were separated from the irradiated natural Zn and 68Zn using sublimation and column separation techniques. The production methods for 64Cu and 67Cu developed in this study are expected to enhance their availability in an economically sustainable manner.

Keywords: Copper-64, Copper-67, theranostics, accelerator neutron, Deuteron accelerator

Received: 30 Jun 2025; Accepted: 22 Sep 2025.

Copyright: © 2025 NAGAI, Kawabata, Saeki, Motoishi, Hashimoto, Tsukada, Motomura, Ohta, Takashima, Hashimoto, Itoh, Kikunaga and Furumoto. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence: YASUKI NAGAI, nagai@rcnp.osaka-u.ac.jp

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