3. These Regulations apply to the exposure of ionising radiation in Northern Ireland—
(a)to patients as part of their own medical diagnosis or treatment;
(b)to individuals as part of health screening programmes;
(c)to patients or other persons voluntarily participating in medical or biomedical, diagnostic or therapeutic, research programmes;
(d)to carers and comforters;
(e)to asymptomatic individuals;
(f)to individuals undergoing non-medical imaging using medical radiological equipment.