How the Mo-99/Tc-99m Generator Works: A High-Yield Nuclear Medicine Physics Tutorial

The molybdenum-99/technetium-99m generator is a cornerstone of nuclear medicine, providing a continuous supply of Tc-99m for diagnostic imaging. This tutorial explains the Mo-99 decay chain, the column-based separation of Tc-99m, and why this system is central to daily clinical…

• Part of the '100 radiology physics questions every trainee should know' series, covering core nuclear medicine physics concepts.
• Details the parent-daughter decay of Mo-99 (half-life 66 hours) to Tc-99m (half-life 6 hours) and the saline elution process that yields sodium pertechnetate.
• No external validation or study data; purely educational content aimed at radiology residents and technologists preparing for board exams.

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