In Vivo Radionuclide Generators for Diagnostics and Therapy

Area of Science:

• Nuclear medicine
• Radiochemistry
• Medical physics

Background:

• In vivo radionuclide generators leverage parent isotopes with longer half-lives to deliver short-lived therapeutic or diagnostic radionuclides.
• The 212Pb/212Bi system exemplifies this, enabling targeted delivery of the alpha-emitter 212Bi.
• Transmutation-induced chemical changes can be exploited for diagnostic purposes (e.g., 81Rb/81Kr) or lead to complications in decay chains.

Approach:

• This article provides a comprehensive review of various in vivo radionuclide generators, both common and novel.
• It examines their underlying physical and chemical properties and their utility in medical applications.
• The review contextualizes these generators within the current resurgence of interest in alpha-emitter-based targeted therapies.

Key Points:

• In vivo generators offer a method to access medically relevant radionuclides with desirable decay characteristics.
• The 212Pb/212Bi generator is a prime example for targeted alpha therapy.
• Understanding transmutation effects is crucial for optimizing generator performance and mitigating risks.

Conclusions:

• In vivo radionuclide generators are valuable tools in nuclear medicine, offering unique therapeutic and diagnostic capabilities.
• Their application is particularly relevant for targeted alpha therapies, necessitating careful consideration of decay chain properties.
• Further research into novel generator systems can expand their role in advancing medical treatments and diagnostics.