opopo Flashcards
(16 cards)
What is contamination monitoring in nuclear medicine?
A process to detect and measure ionising radiation after preparing radiopharmaceutical kits
It involves monitoring equipment, personnel, and controlled areas.
When is contamination monitoring performed?
After preparation of radiopharmaceutical kits
Technologists complete monitoring of equipment, themselves, and the controlled area.
What tool is primarily used for contamination monitoring?
Geiger-Muller (GM) counter
It detects and measures ionising radiation.
What is the first step in contamination monitoring?
Testing equipment used in the preparation process
Equipment like lead pots is tested first.
Where are materials that cannot be reused but may be radioactive stored?
In lead lined radioactive waste bins
These materials are kept safe until they decay.
What is the purpose of the lead lined castle/box?
To store radioactive materials until they decay
Lead’s high density helps protect staff from ionising radiation.
How is the room tested for contamination?
Using a GM counter from every corner and surface
This ensures thorough monitoring of the area.
What is done in case of a spillage or detected activity?
Decontamination is completed
This involves using absorbent paper and decontamination solutions.
What solutions are commonly used for decontamination?
Decon 90 and DG-1108
These are effective decontamination solutions.
Where should equipment be washed after contamination?
In a sink that allows radioactive liquid drainage
This is crucial for safe disposal.
What should be done after cleaning the area?
Monitor the area and place signage
This notifies staff and keeps doses ALARP.
How do staff monitor themselves for contamination?
Using a hand and foot monitor
This ensures personal safety after leaving the controlled area.
What should staff do if contamination is detected on clothing?
Remove the contaminated layer of clothing
It should be left to safely decay in the prep room.
What is the first action if radioactivity is present on the skin?
Use a wash to attempt to remove the radioactivity
Generally, it is safe to cover low-level contamination with a plaster.
Why is contamination monitoring important in nuclear medicine?
To prevent missing radioactive incidents and unintended doses
It helps maintain ALARA doses for staff.
How is decontamination completed in the event of contamination?
Using absorbent materials and cleaning solutions
Followed by monitoring the area and personal safety checks.
