Revision Flashcards
Who discovered x-rays?
Wilhelm Conrad Roentgen
What year were x-rays discovered?
1895
Name the law that gives us the safe distance from a source of x-rays
Inverse square law
What does the photoelectric effect do?
The emission of electrons when light shines on a material
What does IR(ME)R 2000 stand for?
Ionising radiation (medical exposure) regulations 2000
what does IRR 2017 stand for?
Ionising radiation regulations 2017
How does IRMER 2017 differ from IRR 2017?
IRMER 2017 deals with exposure to patients for medical and non-medical procedures, whereas IRR 2017 deals with exposure to employees and the public
What does RPA stand for? And what do they do?
Radiation protection advisor, is an individual or body that advises on compliance with the IRRs
What does RPS stand for? And what do they do?
Radiation protection supervisor, a person/s appointed for the purpose of securing compliance with the IRRs in respect to work carried out in an area which is subject to local rules
Name the 4 designated roles under IR(ME)R 2017
Employer
Referrer
Practitioner
Operator
Which designated role in IRMER deals with legalities of taking x-rays?
Employer
What is the designated role of the practitioner under IRMER 2017?
Justifies the exposure
Who is the “operator” according to IRMER 2017?
Any person involved in the “practical aspects” of the production of a radiograph.
what are local rules?
Written rules pertaining to controlled areas where the appropriate procedures are to be followed and responses to incidents or accidents involving ionising radiation.
What does MPE stand for?
Medical Physics Expert
what is the role of an MPE?
Responsible for carrying out dose audits to ensure that dose optimisation and risk education is being correctly achieved
What is the duty of the employer regarding selection criteria for radiographs?
Shall establish recommendations concerning referral criteria
What are the three main advantages of using the paralleling technique for intra-oral radiographs?
Allows accurate geometry of image
Rectangular collimator is easier to position
Can reduce dose to patient by reducing repeats and does not expose patients fingers
