Radiation Safety In the Clinical Setting

Controlled Area

A Controlled area is:

an area where any person is likely to receive an effective dose greater than 6mSv per annum, or a whole body dose of three tenths of any required dose limit (i.e. for 20mSv 0.3x20 = 6mSv).

There are strict controls on the access to a controlled area and staff have to follow ‘well established procedures and practices’.

Access to a controlled area is limited to:
  • Classified workers (for example, radiographers) = 20mSv
  • The patient undergoing the planned exposure (therapy or diagnostic)
  • Controlled Areas Must Be Posted


Radiation Safety - Staff

All personnel must wear assigned dosimeters as required.

All personnel will utilize protective shielding ie; rolling shield, or
remain outside the room with observable/audio monitor of patient

All individuals except the patient must exit the room before treatment is delivered.

Only individuals who meet state mandated requirements can administer the treatments.

Radiation Safety - Patients

Set patient up with a lead apron (minimum thickness of .25 mm) over unaffected areas of the body that are that are close to treatment site.

Place thyroid shield on patients when treatment area is in the head and neck region

Use appropriate Immobilization devices

Utilize appropriate eye shielding

Perform all warm up and daily QA procedures prior to treatment

Machine Operating procedeures will available in the treatment console area

Emergency Procedures will be available in the treatment console area

Emergency contact information will be available in the treatment console area (physician and medical physicist)
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