radiology legislation Flashcards
requirements of IRR17
- registration with HSE
- prior risk assessment
- local rules and radiation protection supervisor (RPS)
- controlled areas
- dose limits
dose limitations
employees - whole body 20, lens of eye 20, skin 500, extremities 500
trainers under 18, 6,15,150,150
general public, 1,15,50,50
controlled areas
Designation
• Technically only needs to be the area in which the dose exceeds 6mSv/year
• Need to control access so often designate the whole room
• need to have signs to show controlled area
Need to demonstrate doses are restricted – use
badges
key roles under the IRMER 2017 and duties
referrers – registered health care professional who is entitled in accordance with the employers procedures to refer individuals for medical exposure to a practitioner
practisioner – registered health care professional who is entitled in accordance with the employers procedures to take responsibility for an individual exposure
- looks at info given by the practitioner
- justifies the exposure
operator - person who is entitled in accordance with the employers procedures to carry out practical aspects of the exposure
justification of doses
- Does the benefit to the patient/society outweigh the costs?
- Exposure objectives
- Individual detriment (eg those with disabilities more likely to have more radiographs taken over life time, is this one necessary
- Alternative techniques eg MRI vs CT
optimisation
- Doses must be kept ‘As Low As Reasonably Practicable’ consistent with the intended purpose (ALARP principle)
- Use the right equipment and methods
- Can ‘optimise’ through:
- QA program
- Assessment of patient dose
- Diagnostic Reference Levels (DRLs)
- Target level of dose to be established
- Research trials: Patients must be informed of the risks
ALARP principle
- Doses must be kept ‘As Low As Reasonably Practicable’ consistent with the intended purpose (ALARP principle)
- dose is linked to quality (needs to be good enough to get the clinical need but not overly good)
