What is the best choice of radionuclide settings for a constancy test on a dose calibrator in a general nuclear medicine imaging department?

The best choice of radionuclide settings for a constancy test on a dose calibrator in a general nuclear medicine imaging department is the combination that includes 99mTc, 201Tl, and 123I.

This selection is appropriate because these radionuclides are commonly used in routine nuclear medicine procedures and provide a good range of energies suitable for the calibration of dose calibrators. 99mTc is the workhorse in nuclear medicine, utilized in a variety of imaging studies due to its favorable physical characteristics, including a half-life of 6 hours and gamma emissions ideal for detection. 201Tl is used in myocardial perfusion imaging, adding another important energy level relevant to clinical practice. 123I is a gamma-emitting radionuclide primarily used for thyroid imaging and has a half-life and emission characteristics that complement the other isotopes in the chosen set.

Utilizing this combination allows for effective verification of the dose calibrator across different energy ranges, ensuring that it can accurately measure the activity of radionuclides typically used in the department.

In contrast, the other options may include isotopes that are less frequently used together in clinical settings or do not provide the same breadth of energy spectrum necessary for effective calibration. For instance, the