What is the stop level for 82-Rb?

The stop level for 82-Rubidium (82-Rb) in positron emission tomography (PET) refers to the amount of activity that is needed to safely and effectively halt the infusion of the radiopharmaceutical during a PET procedure. For 82-Rb, the stop level is typically set at around 17 liters.

This level is significant because it helps ensure that enough radiotracer is available for imaging while minimizing any potential risk associated with excessive radioactivity. Achieving the appropriate stop level is crucial for patient safety and optimal image quality, as well as for efficient use of the radiopharmaceutical. The choice of this specific stop level also aligns with the pharmacokinetics and dosimetry associated with 82-Rb, allowing for effective imaging protocols that maximize the benefit to the patient while adhering to safety protocols.

Understanding the stop level also allows technologists and nuclear medicine practitioners to manage the radiologic workload effectively, ensuring that procedures are completed within the time frame needed for adequate imaging without unnecessary waste of the radiotracer.