公开(公告)号：US20220208409A1

公开(公告)日：2022-06-30

申请号：US17611296

申请日：2020-03-02

Applicant: HITACHI, LTD.

Inventor： Yuuko KANI ,  Takahiro TADOKORO ,  Yuichiro UENO

IPC: G21K5/08 ,  G21G1/06 ,  G21G1/10 ,  G21G1/12

Abstract: A radionuclide production method and system makes it possible to separate a target radionuclide generated by irradiation with a radioactive ray, and to reduce the generation of a radioactive waste along with the separation. The radionuclide production method includes irradiating, with a radioactive ray, a target material in which a starting material nuclide is present, to generate a radionuclide; and eluting the radionuclide into a liquid by bringing the target material into contact with the liquid. The radionuclide production system includes a target material having a starting material nuclide; an irradiation unit for the target material that generates a radionuclide; and an elution unit that elutes the radionuclide into a liquid by bringing the target material into contact with the liquid. For both the radionuclide production method and system, the target material is a porous body or a granular material through which the liquid is passable.

公开(公告)号：US20220199277A1

公开(公告)日：2022-06-23

申请号：US17601467

申请日：2020-02-12

Applicant: Hitachi, Ltd.

Inventor： Takahiro TADOKORO ,  Yuichiro UENO ,  Yuuko KANI

IPC: G21G1/12 ,  G21K5/08

Abstract: An object of the invention is to efficiently produce a radionuclide. While a fluid containing a raw material is circulated along a circulation passage, a first radionuclide is generated in the fluid from the raw material by irradiating the fluid with radiation rays midway along the circulation passage. Further, while the fluid is circulated along the circulation passage, a substance containing at least a part of the first radionuclide and a second radionuclide generated from the first radionuclide is taken out from the fluid, and the fluid containing the remaining raw material is returned to the circulation passage again for circulation.

公开(公告)号：US20240153663A1

公开(公告)日：2024-05-09

申请号：US18280279

申请日：2022-03-17

Applicant: HITACHI, LTD.

Inventor： Takahiro TADOKORO ,  Yuichiro UENO ,  Yuuko KANI ,  Kento NISHIDA ,  Takahiro WATANABE ,  Takahiro SASAKI ,  Masaharu ITO

IPC: G21G1/12

CPC classification number: G21G1/12

Abstract: A radionuclide production system is a system for producing a radionuclide by irradiating a liquid containing a raw material nuclide with bremsstrahlung radiation, the radionuclide production system including: a circulation path configured to allow a liquid containing a raw material nuclide to circulate; and a radiation generation unit configured to generate bremsstrahlung radiation to irradiate the liquid. A metal member containing a pure metal of a platinum group or an alloy of the platinum group is provided at an upper portion in the circulation path. In a radionuclide production method, the raw material nuclide contained in the liquid is transformed to the radionuclide by irradiating the liquid with the bremsstrahlung radiation while circulating the liquid containing the raw material nuclide in the circulation path, and oxygen and hydrogen generated due to radiolysis of the liquid are removed by a recombination reaction with a metal member formed of the pure metal.

公开(公告)号：US20170323696A1

公开(公告)日：2017-11-09

申请号：US15520266

申请日：2015-10-14

Applicant: HITACHI, LTD.

Inventor： Yuuko KANI ,  Takahiro TADOKORO

IPC: G21G4/08 ,  G21G1/10 ,  A61K51/02

CPC classification number: G21G4/08 ,  A61K51/025 ,  G21G1/10 ,  G21G1/12

Abstract: The present invention comprises: an electron beam accelerator (2); a container (4) housing a raw material (3) for radioactive nuclide production, said raw material including molybdenum 100; a heating device (5) that heats the raw material (3) for radioactive nuclide production; an adsorbent (81) that adsorbs technetium compounds including technetium 99m generated by the heated raw material (3) for radioactive nuclide production; an eluent supply device (10) that supplies an eluent (L1) that causes elution of the technetium compound adsorbed to the adsorbent (81); and a drug recovery unit (13) that recovers the eluent (L2).