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Obata S, Sugo Y, Manabe H, Arima Y, Toda K, Ishioka NS, Mori M, Ohira SI. Radioactive isotope separation with 3D-printed flow-based device. ANAL SCI 2023; 39:671-677. [PMID: 36637706 DOI: 10.1007/s44211-022-00254-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 12/17/2022] [Indexed: 01/14/2023]
Abstract
Radioactive isotope (RI) metals are a new type of tracer for positron emission tomography generated from the target metal by proton irradiation using a cyclotron. The generated metal RIs need to be separated from the target metal rapidly and effectively. In the present study, we developed a 3D-printed flow device to separate metal RIs from target metals. The separation was performed with selective formation of ethylenediaminetetraacetic acid (EDTA) complex based on the difference in formation constants. The RI metal selectively formed a EDTA complex, thus changing its ionic charge in solution. The solution was then introduced into a cation exchange column for selective adsorption of the target metal. The solution with added chelator and controlled pH was introduced into the developed system and automatically separated metal RI from target metals within 14 min. The separation method was applied to separate RI 67Ga from target metal Zn using a mixture of 107 pg L-1 67Ga in 250 mg L-1 Zn2+. The recoveries of 67Ga and Zn were 97% and 100%, respectively. Furthermore, an ultraviolet (UV) radiation reactor was integrated into the system to decompose the EDTA complex and recover the Ga3+ ion. Ga3+ recovery by UV radiation was effective, 87%. The developed system was also successfully applied to the separation of Zr and Y. Therefore, the method and system can be applied to separate other metal RIs from target metals.
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Affiliation(s)
- Syohei Obata
- Department of Chemistry, Kumamoto University, 2-39-1 Kurokami, Kumamoto, 860-8555, Japan
| | - Yumi Sugo
- Department of Radiation-Applied Biology Research, Takasaki Advanced Radiation Research Institute, National Institutes for Quantum Science and Technology, 1233 Watanuki, Takasaki, 370-1292, Japan.
| | - Hinako Manabe
- Faculty of Science and Technology, Kochi University, 2-5-1 Akebono-Cho, Kochi, 780-8520, Japan
| | - Yuto Arima
- Department of Chemistry, Kumamoto University, 2-39-1 Kurokami, Kumamoto, 860-8555, Japan
| | - Kei Toda
- Department of Chemistry, Kumamoto University, 2-39-1 Kurokami, Kumamoto, 860-8555, Japan
| | - Noriko S Ishioka
- Department of Radiation-Applied Biology Research, Takasaki Advanced Radiation Research Institute, National Institutes for Quantum Science and Technology, 1233 Watanuki, Takasaki, 370-1292, Japan
| | - Masanobu Mori
- Faculty of Science and Technology, Kochi University, 2-5-1 Akebono-Cho, Kochi, 780-8520, Japan.
| | - Shin-Ichi Ohira
- Department of Chemistry, Kumamoto University, 2-39-1 Kurokami, Kumamoto, 860-8555, Japan.
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Sugo Y, Ohira SI, Manabe H, Maruyama YH, Yamazaki N, Miyachi R, Toda K, Ishioka NS, Mori M. Highly Efficient Separation of Ultratrace Radioactive Copper Using a Flow Electrolysis Cell. ACS OMEGA 2022; 7:15779-15785. [PMID: 35571765 PMCID: PMC9096931 DOI: 10.1021/acsomega.2c00828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 04/15/2022] [Indexed: 06/15/2023]
Abstract
Preparing compounds containing the radioisotope 64Cu for use in positron emission tomography cancer diagnostics is an ongoing area of research. In this study, a highly efficient separation method to recover 64Cu generated by irradiating the target 64Ni with a proton beam was developed by employing a flow electrolysis cell (FE). This system consists of (1) applying a reduction potential for the selective adsorption of 64Cu from the target solution when dissolved in HCl and (2) recovering the 64Cu deposited onto the carbon working electrode by desorbing it from the FE during elution with 10 mmol/L HNO3, which applies an oxidation potential. The 64Cu was selectively eluted at approximately 30 min under a flow rate of 0.5 mL/min from the injection to recovery. The newly developed flow electrolysis system can separate the femtomolar level of ultratrace radioisotopes from the larger amount of target metals as an alternative to conventional column chromatography.
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Affiliation(s)
- Yumi Sugo
- Department
of Radiation-Applied Biology Research, Takasaki Advanced Radiation
Research Institute, National Institutes
for Quantum Science and Technology, 1233 Watanuki, Takasaki, Gunma 370-1292, Japan
| | - Shin-Ichi Ohira
- Department
of Chemistry, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Japan
| | - Hinako Manabe
- Faculty
of Science and Technology, Kochi University, 2-5-1 Akebono-cho, Kochi 780-8520, Japan
| | - Yo-hei Maruyama
- Faculty
of Science and Technology, Kochi University, 2-5-1 Akebono-cho, Kochi 780-8520, Japan
| | - Naoaki Yamazaki
- Graduate
School of Engineering, Gunma University, 1-5-1 Tenjin-cho, Kiryu, Gunma 376-8515, Japan
| | - Ryoma Miyachi
- Department
of Chemistry, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Japan
| | - Kei Toda
- Department
of Chemistry, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Japan
| | - Noriko S. Ishioka
- Department
of Radiation-Applied Biology Research, Takasaki Advanced Radiation
Research Institute, National Institutes
for Quantum Science and Technology, 1233 Watanuki, Takasaki, Gunma 370-1292, Japan
| | - Masanobu Mori
- Faculty
of Science and Technology, Kochi University, 2-5-1 Akebono-cho, Kochi 780-8520, Japan
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Sugo Y, Miyachi R, Maruyama YH, Ohira SI, Mori M, Ishioka NS, Toda K. Electrodialytic Handling of Radioactive Metal Ions for Preparation of Tracer Reagents. Anal Chem 2020; 92:14953-14958. [PMID: 32959650 DOI: 10.1021/acs.analchem.0c02456] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Radioactive metals are applied in biochemistry, medical diagnosis such as positron emission tomography (PET), and cancer therapy. However, the activity of radioisotopes exponentially decreases with time; therefore, rapid and reliable probe preparation methods are strongly recommended. In the present study, electrodialytic radioactive metal ion handling is studied for counter ion conversion and in-line probe synthesis. Presently, counter ion conversion and probe synthesis are achieved by evaporative dryness and solution mixing, respectively. Evaporative dryness is time-consuming and is a possible process that can lead to loss of radioactive metal ions. Mixing of solutions for synthesis makes dilution and undesirable effects of counter ion on the synthesis. An optimized electrodialytic flow device can transfer a radioisotope, 64Cu2+, with high recovery from HCl matrices to HNO3 (∼100%). Matrices can also be transferred into acetic acid and citric acid, even though the concentration of the metal ion is at the picomolar level. The ion transfer can also be achieved with simultaneous counter ion conversion, complex synthesis, and enrichment. When the ligand was dissolved in an acceptor solution, the transferred metal ions from the donor were well mixed and formed a complex with the ligand in-line. The efficiency of the synthesis was ∼100% for 1.0 pM 64Cu. A relatively larger donor-to-acceptor flow rate can enrich the metal ion in the acceptor solution continuously. The flow rate ratio of 10 (donor/acceptor) can achieve 10 times enrichment. The present electrodialytic ion handling method can treat ultra-trace radioisotopes in a closed system. With this method, rapid, effective, and safe radioisotope treatments were achieved.
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Affiliation(s)
- Yumi Sugo
- Department of Radiation-Applied Biology Research, Takasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology, 1233 Watanuki, Takasaki 370-1292, Japan
| | - Ryoma Miyachi
- Department of Chemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Yo-Hei Maruyama
- Faculty of Science and Technology, Kochi University, 2-5-1, Akebono-cho, Kochi 780-8520, Japan
| | - Shin-Ichi Ohira
- Department of Chemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Masanobu Mori
- Faculty of Science and Technology, Kochi University, 2-5-1, Akebono-cho, Kochi 780-8520, Japan
| | - Noriko S Ishioka
- Department of Radiation-Applied Biology Research, Takasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology, 1233 Watanuki, Takasaki 370-1292, Japan
| | - Kei Toda
- Department of Chemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
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Schmidt MP, Mamet SD, Ferrieri RA, Peak D, Siciliano SD. From the Outside in: An Overview of Positron Imaging of Plant and Soil Processes. Mol Imaging 2020; 19:1536012120966405. [PMID: 33119419 PMCID: PMC7605056 DOI: 10.1177/1536012120966405] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Positron-emitting nuclides have long been used as imaging agents in medical science to spatially trace processes non-invasively, allowing for real-time molecular imaging using low tracer concentrations. This ability to non-destructively visualize processes in real time also makes positron imaging uniquely suitable for probing various processes in plants and porous environmental media, such as soils and sediments. Here, we provide an overview of historical and current applications of positron imaging in environmental research. We highlight plant physiological research, where positron imaging has been used extensively to image dynamics of macronutrients, signalling molecules, trace elements, and contaminant metals under various conditions and perturbations. We describe how positron imaging is used in porous soils and sediments to visualize transport, flow, and microbial metabolic processes. We also address the interface between positron imaging and other imaging approaches, and present accompanying chemical analysis of labelled compounds for reviewed topics, highlighting the bridge between positron imaging and complementary techniques across scales. Finally, we discuss possible future applications of positron imaging and its potential as a nexus of interdisciplinary biogeochemical research.
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Affiliation(s)
- Michael P Schmidt
- Department of Soil Science, College of Agriculture and Bioresources, 7235University of Saskatchewan, Saskatoon, Canada
| | - Steven D Mamet
- Department of Soil Science, College of Agriculture and Bioresources, 7235University of Saskatchewan, Saskatoon, Canada
| | - Richard A Ferrieri
- Interdisciplinary Plant Group, Division of Plant Sciences, Department of Chemistry, Missouri Research Reactor Center, 14716University of Missouri, Columbia, MO, USA
| | - Derek Peak
- Department of Soil Science, College of Agriculture and Bioresources, 7235University of Saskatchewan, Saskatoon, Canada
| | - Steven D Siciliano
- Department of Soil Science, College of Agriculture and Bioresources, 7235University of Saskatchewan, Saskatoon, Canada
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Ermert J, Benešová M, Hugenberg V, Gupta V, Spahn I, Pietzsch HJ, Liolios C, Kopka K. Radiopharmaceutical Sciences. Clin Nucl Med 2020. [DOI: 10.1007/978-3-030-39457-8_2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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6
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Calculation of productions of medical 201Pb, 198Au, 186Re, 111Ag, 103Pd, 90Y, 89Sr, 77Kr, 77As, 67Cu, 64Cu, 47Sc and 32P nuclei used in cancer therapy via phenomenological and microscopic level density models. Appl Radiat Isot 2019; 144:64-79. [DOI: 10.1016/j.apradiso.2018.11.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2018] [Revised: 10/12/2018] [Accepted: 11/22/2018] [Indexed: 11/24/2022]
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8
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Suzui N, Yin YG, Ishii S, Sekimoto H, Kawachi N. Visualization of zinc dynamics in intact plants using positron imaging of commercially available 65Zn. PLANT METHODS 2017; 13:40. [PMID: 28533812 PMCID: PMC5437668 DOI: 10.1186/s13007-017-0188-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Accepted: 05/04/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND Positron imaging can be used to non-destructively visualize the dynamics of a positron-emitting radionuclide in vivo, and is therefore a tool for understanding the mechanisms of nutrient transport in intact plants. The transport of zinc, which is one of the most important nutrient elements for plants, has so far been visualized by positron imaging using 62Zn (half-life: 9.2 h), which is manufactured in the limited number of facilities that have a cyclotron. In contrast, the positron-emitting radionuclide 65Zn (half-life: 244 days) is commercially available worldwide. In this study, we examined the possibility of conducting positron imaging of zinc in intact plants using 65Zn. RESULTS By administering 65Zn and imaging over a long time, clear serial images of 65Zn distributions from the root to the panicle of dwarf rice plants were successfully obtained. CONCLUSIONS Non-destructive visualization of zinc dynamics in plants was achieved using commercially available 65Zn and a positron imaging system, demonstrating that zinc dynamics can be visualized even in facilities without a cyclotron.
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Affiliation(s)
- Nobuo Suzui
- Takasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology, Takasaki, Japan
- Takasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology, 1233 Watanuki, Takasaki, Gunma 370-1292 Japan
| | - Yong-Gen Yin
- Takasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology, Takasaki, Japan
| | - Satomi Ishii
- Takasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology, Takasaki, Japan
| | - Hitoshi Sekimoto
- Faculty of Agriculture, Utsunomiya University, Utsunomiya, Japan
| | - Naoki Kawachi
- Takasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology, Takasaki, Japan
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Ohya T, Nagatsu K, Suzuki H, Fukada M, Minegishi K, Hanyu M, Fukumura T, Zhang MR. Efficient preparation of high-quality 64 Cu for routine use. Nucl Med Biol 2016; 43:685-691. [DOI: 10.1016/j.nucmedbio.2016.07.007] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Accepted: 07/27/2016] [Indexed: 11/16/2022]
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10
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Partelová D, Horník M, Lesný J, Rajec P, Kováč P, Hostin S. Imaging and analysis of thin structures using positron emission tomography: Thin phantoms and in vivo tobacco leaves study. Appl Radiat Isot 2016; 115:87-96. [PMID: 27344004 DOI: 10.1016/j.apradiso.2016.05.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Revised: 04/27/2016] [Accepted: 05/17/2016] [Indexed: 10/21/2022]
Abstract
In this work, a novel approach utilizing the designed phantoms imitating the plant tissues was applied for the evaluation of the relationships between the parameters of the prepared phantoms and/or quantitative variables obtained within the PET analysis. The microPET system developed for animal objects and approaches used made it possible to obtain the quantitative data in the form of (18)F radioactivity as well as the glucose (in µg) accumulated in leaf tissues within the dynamic in vivo study.
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Affiliation(s)
- Denisa Partelová
- Department of Ecochemistry and Radioecology, Faculty of Natural Sciences, University of Ss. Cyril and Methodius in Trnava, Nám. J. Herdu 2, SK-917 01 Trnava, Slovak Republic.
| | - Miroslav Horník
- Department of Ecochemistry and Radioecology, Faculty of Natural Sciences, University of Ss. Cyril and Methodius in Trnava, Nám. J. Herdu 2, SK-917 01 Trnava, Slovak Republic.
| | - Juraj Lesný
- Department of Ecochemistry and Radioecology, Faculty of Natural Sciences, University of Ss. Cyril and Methodius in Trnava, Nám. J. Herdu 2, SK-917 01 Trnava, Slovak Republic.
| | - Pavol Rajec
- BIONT Inc., Karloveská 63, SK-842 29 Bratislava, Slovak Republic.
| | - Peter Kováč
- BIONT Inc., Karloveská 63, SK-842 29 Bratislava, Slovak Republic.
| | - Stanislav Hostin
- Department of Ecochemistry and Radioecology, Faculty of Natural Sciences, University of Ss. Cyril and Methodius in Trnava, Nám. J. Herdu 2, SK-917 01 Trnava, Slovak Republic.
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11
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Akca S, Tel E, Kara A. Calculation of excitation functions for the production of Cu and Co medical isotopes. KERNTECHNIK 2014. [DOI: 10.3139/124.110390] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
Copper and cobalt radioisotopes have been used for both diagnostic and therapeutic purposes in the field of nuclear medicine. There is considerable interest in 60
,61,64,67Cu and 55,57Co radioisotopes for some applications like PET, SPECT imaging and targeted radiotherapy of tumors. In present study, the production of 60,61,64,67Cu and 55,57Co via 64Zn(p,α)61Cu, 67Zn(p,α)64Cu, 70Zn(p,α)67Cu, 58Ni(p,α)55Co, 60Ni(p,α)57Co, 64Zn(p,nα)6°Cu and 68Zn(p,nα)64Cu reactions have been investigated in the range of 5–40 MeV proton incident energy. The new version of the code ALICE-2011 is used to determine the excitation functions of these nuclear reactions. The calculated excitation functions were compared with experimental results and semi-empirical cross section values of a previously developed model.
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Affiliation(s)
- S. Akca
- Cukurova University, Faculty of Arts and Science, Department of Physics, Adana-TURKEY
| | - E. Tel
- Osmaniye Korkut Ata University, Faculty of Arts and Science, Department of Physics, Osmaniye-TURKEY
| | - A. Kara
- Osmaniye Korkut Ata University, Faculty of Arts and Science, Department of Physics, Osmaniye-TURKEY
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Kolotov VP, Grozdov DS, Dogadkin NN. Generation of metaimages while analysis of the time series autoradiograms. J Radioanal Nucl Chem 2012. [DOI: 10.1007/s10967-012-2137-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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13
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Kolotov VP, Grozdov DS, Dogadkin NN. Enhancing the selectivity of digital gamma-activation autoradiography by computer processing of a series of autoradiography images. JOURNAL OF ANALYTICAL CHEMISTRY 2012. [DOI: 10.1134/s1061934812100048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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14
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Sadeghi M, Zandi N, Bakhtiari M. Nuclear model calculation for cyclotron production of 61Cu as a PET imaging. J Radioanal Nucl Chem 2011. [DOI: 10.1007/s10967-011-1557-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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15
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Wadas TJ, Wong EH, Weisman GR, Anderson CJ. Coordinating radiometals of copper, gallium, indium, yttrium, and zirconium for PET and SPECT imaging of disease. Chem Rev 2010; 110:2858-902. [PMID: 20415480 PMCID: PMC2874951 DOI: 10.1021/cr900325h] [Citation(s) in RCA: 671] [Impact Index Per Article: 47.9] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Thaddeus J Wadas
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, 510 S. Kingshighway Blvd., Campus Box 8225 St. Louis, Missouri 63110, USA.
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Watanabe S, Watanabe S, Liang J, Hanaoka H, Endo K, Ishioka NS. Chelating ion-exchange methods for the preparation of no-carrier-added 64Cu. Nucl Med Biol 2009; 36:587-90. [DOI: 10.1016/j.nucmedbio.2009.04.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2009] [Revised: 03/16/2009] [Accepted: 04/08/2009] [Indexed: 11/25/2022]
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