True or False: There is a maximum permissible dose for medical exposures.

The statement is true because there are indeed established guidelines and regulations concerning maximum permissible doses for medical exposures, aimed at safeguarding patient safety while ensuring effective treatments. These guidelines are set by organizations such as the International Commission on Radiological Protection (ICRP) and various national regulatory bodies. Though medical exposures are tailored for the individual patient and might not have a universally set dose limit like occupational exposure, principles such as justification and optimization apply. This means that while no distinct "maximum" dose is defined in every case, practitioners must adhere to limits that ensure doses remain within safe and acceptable ranges, minimizing risk while achieving therapeutic benefits.

In contrast, maximum permissible doses for radiation workers and public exposure are usually more defined due to uniformity in working conditions and the general population's exposure potential. These different categories emphasize the need for caution in all situations involving radiation but are distinct from patient-specific medical exposures. Thus, the notion of a maximum permissible dose for medical exposures is appropriate, given the emphasis on protecting patients in a clinical setting.