Final answer:
The records of dose calibrator linearity must be maintained typically for a period of 3 years, in compliance with regulatory standards in the field of nuclear medicine.
Step-by-step explanation:
The question pertains to the maintenance of records for a dose calibrator's linearity tests, which is a regulatory requirement in the field of nuclear medicine. The correct duration for keeping records of dose calibrator linearity, according to the U.S. Nuclear Regulatory Commission (NRC) or corresponding authority, typically depends on specific regulatory requirements and may vary by country. In the United States, for example, under NRC regulations, such records must typically be maintained for a period of 3 years after the record is made. It's important to note that regulations may be subject to change and should be verified with the latest standards and guidelines provided by regulatory agencies.