Which of the following is an example of a procedure that MRT licence holders can perform?

Radiation therapy is an example of a procedure that MRT licence holders are specifically trained and authorized to perform. As medical radiologic technologists, these professionals have the requisite education and certification to operate radiation-producing equipment and deliver radiation treatment to patients. This is a key aspect of their role in the healthcare system, as they work closely with other members of the medical team to ensure proper treatment protocols are followed for effective patient care.

In contrast, the other options reflect practices that are outside the standard scope of work for MRT licence holders. Physical therapy involves rehabilitative techniques and exercises that require distinct training and licensure. Orthopedic surgery is a surgical intervention that is performed by licensed surgeons, which is not within the MRT's training or scope. Dental radiography, while related to radiology, typically falls under the domain of dental professionals who are specifically trained in dental imaging techniques. Hence, radiation therapy remains the precise answer within the MRT’s scope of practice.