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Flashcards in radiology legislation Deck (7)
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1

requirements of IRR17

- registration with HSE
- prior risk assessment
- local rules and radiation protection supervisor (RPS)
- controlled areas
- dose limits

2

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

3

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

4

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

5

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

6

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

7

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)