KA 9

Question 1

What are common items in a HDR emergency kit?

Answer 1

forceps, stopwatch, pen, paper, digital dose monitoring devices, survey meter

Question 2

what are the key assumptions made when performing shielding calculations for a HDR brachytherapy suite?

Answer 2

• patient doesn’t attenuate the radiation
• isotopic, all surfaces are considered primary barriers. Hence use factor (U)==1
• position of the source/patient in the room is fixed

Question 3

what is used to determine the required attenuation of barriers for radiation safety: dose constraints or dose limits?

Answer 3

constraints, which are derived from dose limits (constraint<limit)

Question 4

According to ICRP 103, what are the three fundamental principles of radiological protection? Which of these do not apply to therapeutic purposes?

Answer 4

Justification, optimisation, and dose limits. Dose limits do not apply for therapeutic exposures

Question 5

According to ICRP 103, what are the three categories of radiation exposure?

Answer 5

Occupational, public, and medical exposures of patients.