Radiation Safety

Question 1

3 Measures of Radiation Safety

Answer 1

• Time
• Distance
• Shielding

Question 2

Stochastic Effects

Answer 2

• By chance
• Long term
• Greater the dose, higher the chance
• May take years to manifest
  (Genetic/ Cancer)

Question 3

Deterministic Effects

Answer 3

• Threshold dose level
• Short term effects
• Severity increases at threshold
  (Hair loss/ Sterility/ Cataracts)

Question 4

Dose limiting measures

Answer 4

• Justification of exposure
• Limitation (dose limits)
• Optimisation (ALARA/P)

Question 5

Mobiles

Answer 5

• Operator should wear lead coat
• “ stand at least 2m from patient/tube
• Radiation controlled area
• Adhere to IRR 2017 & IR(ME)R 2018