Chapter 5 Flashcards
Personnel Dosimetry
the monitoring of radiation exposure to any person occupationally exposed on a regular basis to ionizing radiation.
What is the annual occupational EfD limit?
50 mSv (5 rem) in any single year
When do most health care facilities issue dosimetry devices?
When personnel could receive approximately 1 % of the annual occupational EfD limit in any month
Personnel dosimeter provides what?
An indication of the working habits and working conditions of diagnostic imaging personnel
Personnel dosimeter determines what?
Occupational exposure by detecting and measuring the quantity of ionizing radiation to which the dosimeter has been exposed over a period of time.
What does a personnel dosimeter not do?
Protect the wearer from exposure because the instrument is just meant to detect and measure the amount of ionizing radiation to which it has been exposed.
A personnel monitoring device only records what?
the exposure received in the area where the device is worn
Where should a personnel dosimeter be worn?
On the front of the clothing at the collar level to approximate the location of maximal radiation dose to the thyroid, head and neck
What produces the highest occupational radiation exposure for diagnostic imaging personnel?
Fluoroscopy, Surgery and Special Radiographic Procedures
How much more radiation does the unprotected head, neck, and lenses of the eye receive?
10 to 20 times more exposure than the protected body trunk
When would someone wear 2 dosimeters?
during lengthy interventional fluoroscopy procedures
Where would the second dosimeter be worn?
Worn beneath a wrap-around style lead apron at waist level
What is another name for extremity dosimeter?
Thermoluminescent Dosimeter (TLD)
What is a extremity dosimeter?
A ring
Why would you wear an extremity dosimeter?
A second monitor when performing fluoroscopic procedures that require the hands to be near the primary x-ray beam.
