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The continuing important role of radionuclide generator systems for nuclear medicine

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Abstract

In this review, the continuing importance and status of development of radionuclide generator systems for nuclear medicine are discussed. Radioisotope costs and availability are two important factors, and both nuclear reactors and accelerator facilities are required for production of the parent radioisotopes. Radionuclide generator research is currently focused on the development of generators which provide radioisotopes for positron emission tomography (PET) applications and daughter radioisotopes for various therapeutic applications which decay primarily by particle emission. Generator research continues to be influenced by developments and requirements of complementary technologies, such as the increasing availability of PET. In addition, the availability of a wide spectrum of tumor-specific antibodies, fragments, and peptides for radio-immunodiagnosis and radioimmunotherapy has stimulated the need for generator-derived radioisotopes. The advantages of treatment of arthritis of the synovial joints with radioactive particles (radiation synovectomy) may be expected to be of increasing importance as the elderly population increases, and many of these agents are prepared using generator-derived radioisotopes such as yttrium-90 and rhenium-188. Therapeutic use of the “in vivo generator” is a new approach, where the less radio-toxic parent radioisotope is used to prepare tissue-speciic therapeutic agents. Following in vivo site localization, decay of the parent provides the daughter for therapy at the target site. The principal foundation of most diagnostic agents will continue to require technetium-99m from the molybdenum-99/technetium-99m (“Moly”) generator. With the limited availability of nuclear reactors and facilities necessary for production and processing of fission 99mTc and the significant issues and problems associated with radioactive waste processing, however, the possibility of utilizing lower specific activity 99Mo produced from neutron activation of enriched 98Mo may become practical in the future.

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  1. Nuclear Medicine Group, Health Sciences Research Division, Oak Ridge National Laboratory, P.O. Box 2008, 37831-6229, Oak Ridge, TN, USA

    F. F. (Russ) Knapp Jr. & S. Mirzadeh

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  1. F. F. (Russ) Knapp Jr.
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  2. S. Mirzadeh
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Correspondence to: RE Knapp, Jr.

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Knapp, F.F.(., Mirzadeh, S. The continuing important role of radionuclide generator systems for nuclear medicine. Eur J Nucl Med 21, 1151–1165 (1994). https://doi.org/10.1007/BF00181073

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