- accidental exposure
means an exposure to ionising radiation of individuals as a result of an accident;
- adequate training
means training which satisfies the requirements of Schedule 3;
- assessment
means prior determination of amount, parameter or method;
- carers and comforters
means individuals knowingly and willingly incurring an exposure to ionising radiation by helping, other than as part of their occupation, in the support and comfort of individuals undergoing or having undergone a medical exposure (other than as a carer and comforter);”
- clinical audit
means a systematic examination or review of medical radiological procedures which seeks to improve the quality and outcome of patient care through structured review, whereby medical radiological practices, procedures and results are examined against agreed standards for good medical radiological procedures, with modification of practices, where indicated, and the application of new standards if necessary;
- Department
means the Department of Health;
- diagnostic reference levels
means dose levels in medical radiodiagnostic or interventional radiology practices, or, in the case of radio-pharmaceuticals, levels of activity, for typical examinations for groups of standard-sized individuals or standard phantoms for broadly defined types of equipment;
- dose constraint
means a constraint set on the prospective doses of individuals which may result from a given radiation source;
- employer
means any person who, in the course of a trade, business or other undertaking, carries out (other than as an employee), or engages others to carry out, medical exposures described in regulation 3 or practical aspects, at a given radiological installation;
- equipment
means equipment which— (a) delivers ionising radiation to a person undergoing exposure;
- ethics committee
means— (a) an ethics committee established or recognised in accordance with Part 2 of the Medicines for Human Use (Clinical Trials) Regulations 2004;
- evaluation
means interpretation of the outcome and implications of, and of the information resulting from, an exposure;
- exposure
means the act of exposing or condition of being exposed to ionising radiation emitted outside the body (external exposure) or within the body (internal exposure);
- health screening
means a procedure for early diagnosis in population groups at risk;
- individual detriment
means clinically observable deleterious effects in individuals or their descendants, the appearance of which is either immediate or delayed and in the latter case, implies a probability rather than a certainty of appearance.
- interventional radiology
means the use of X-ray imaging techniques to facilitate the introduction and guidance of devices in the body for diagnostic or treatment purposes;
- ionising radiation
means the transfer of energy in the form of particles or electromagnetic waves of a wavelength of 100 nanometres or less or a frequency of 3 x 1015 hertz or more capable of producing ions directly or indirectly;
- Licensing Authority
means the Department;
- medical exposure
means an exposure coming within any of paragraphs (a) to (e) of regulation 3;
- medical physics expert
means an individual or a group of individuals, having the knowledge, training and experience to act or give advice on matters relating to radiation physics applied to exposure, whose competence in this respect is recognised by the Department;
- medical radiological
means pertaining to radiodiagnostic and radiotherapeutic procedures, and interventional radiology or other medical uses of ionising radiation for planning, guiding and verification purposes;
- medical radiological procedure
means any procedure giving rise to a medical exposure;
- non-medical imaging exposure
means any deliberate exposure of humans for imaging purposes where the primary intention of the exposure is not to bring a health benefit to the individual being exposed;
- operator
means any person who is entitled, in accordance with the employer’s procedures, to carry out practical aspects including those to whom practical aspects have been allocated, medical physics experts and, except where they do so under the direct supervision of a person who is adequately trained, persons participating in practical aspects as part of practical training;
- patient dose
means the dose concerning patients or other individuals undergoing exposures to which these Regulations apply;
- practical aspect
means the physical conduct of a medical exposure and any supporting aspects, including handling and use of medical radiological equipment, the assessment of technical and physical parameters (including radiation doses), calibration and maintenance of equipment, preparation and administration of radio-pharmaceuticals, clinical evaluation and image processing;
- practitioner
means a registered health care professional who is entitled in accordance with the employers procedures to take responsibility for an individual exposure;
- quality assurance
means all those planned and systematic actions necessary to provide adequate assurance that a structure, system, component or procedure will perform satisfactorily in compliance with generally acceptable standards and quality control is a part of quality assurance;
- quality control
means the set of operations (programming, coordinating, implementing) intended to maintain or to improve quality and includes monitoring, evaluation and maintenance at required levels of all characteristics of performance of equipment that can be defined, measured, and controlled;
- radiation protection adviser
means an individual who, or a body which is competent to advise on radiation protection in relation to occupational and public exposures;
- radioactive substance
means any substance that contains one or more radionuclides the activity or activity concentration of which cannot be disregarded from a radiation protection point of view;
- radioactive waste adviser
means an individual who, or a body which is competent to provide expert advice on radioactive waste management and environmental radiation protection.
- radiodiagnostic
means pertaining to in-vivo diagnostic nuclear medicine, medical diagnostic radiology using ionising radiation, and dental radiology;
- radiological installation
means a facility where exposures to which these Regulations apply are performed;
- radiotherapeutic
means pertaining to radiotherapy, including nuclear medicine for therapeutic purposes;
- referrer
means a registered health care professional, or a medical practitioner registered with the Medical Council of Ireland, who is entitled in accordance with the employer’s procedures to refer individuals for exposure to a practitioner;
- registered health care professional
means a person who is a member of a profession regulated by a body mentioned in section 25(3) of the National Health Service Reform and Health Care Professions Act 2002;
- relevant enforcing authority
means the Department;
- unintended exposure
means any exposure to ionising radiation which is significantly different from the exposure intended for a given purpose.