What is one type of procedure that NCT licence holders are specifically prohibited from performing?

The correct answer is that NCT license holders are specifically prohibited from practicing unsupervised. This is crucial because the regulations governing NCT (Nuclear Medicine Technologist) license holders emphasize the importance of supervision to ensure patient safety and the quality of care. Unsupervised practice could lead to significant risks, as these professionals may not have the requisite experience or authority to make independent decisions regarding patient care or imaging protocols.

By necessitating supervision, the regulatory framework aims to protect patients and ensure that procedures are performed correctly and safely. In contrast, the other options, while potentially relevant to the scope of practice, do not directly reflect a prohibition in the same way. For example, practicing certain types of radiologic procedures or specific examinations like mammography may fall outside the defined scope of NCT practice, but they do not highlight the critical need for oversight in the context of patient safety. Patient assessments likewise may be performed under certain conditions but should still be done with the oversight of an appropriately qualified professional.