Dosimeters
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Dosimeters are a form of radiation monitoring devices. They are used regularly for a number of key roles including both patient and personal dosimetry, environmental monitoring, spectroscopy, radiopharmaceutical and equipment checking
Function
Energy enters the dosimeter which converts this energy into a signal strength and an output. The conversion process and the output are unique to each different type of dosimeter.
Common output modalities are:
- dose rate; gives an instantaneous value over time
- often used in environmental, radio-pharmaceutical and equipment checks
- total dose; the amount of activity over a given time frame
- patient or personnel dosimetry
Types of dosimeters
- charge collection devices; radiation energy is converted to electric charge (either directly or indirectly) and the dosimeter converts this charge into a signal output
- gas-filled collectors
- scintillation detectors
- solid-state detectors
- other type; devices made of material that changes on exposure to radiation energy
- photographic film
- thermoluminescent detectors (TLD)
- optically stimulated luminescent detectors
-<li><a title="gas-filled collectors" href="/articles/gas-filled-collectors">gas-filled collectors</a></li>- +<li><a href="/articles/gas-filled-collectors">gas-filled collectors</a></li>
-<li>photographic film</li>- +<li><a title="Film dosimeter" href="/articles/film-dosimeter">photographic film</a></li>
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