Dosimeters
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Dosimeters are a form of devices to monitor ionising 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: gives an instantaneous value over time- often used in environmental, radiopharmaceutical and equipment checks
- total dose
; the: the amount of activity over a given time frame- patient or
personnelpersonal dosimetry
- patient or
Types of dosimeters
- charge collection devices
; radiation: 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: devices made of material that changes on exposure to radiation energy- photographic film
- thermoluminescent detectors (TLD)
- optically stimulated luminescent detectors
-<p><strong>Dosimeters</strong> 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</p><h4>Function </h4><p>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. </p><p>Common output modalities are:</p><ul>-<li>dose rate; gives an instantaneous value over time<ul><li>often used in environmental, radiopharmaceutical and equipment checks</li></ul>- +<p><strong>Dosimeters</strong> are a form of devices to monitor <a title="Ionising radiation" href="/articles/ionising-radiation">ionising radiation</a>. They are used regularly for a number of key roles including both patient and personal dosimetry, environmental monitoring, spectroscopy, radiopharmaceutical and equipment checking.</p><h4>Function </h4><p>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. </p><p>Common output modalities are:</p><ul>
- +<li>
- +<a title="dose rate" href="/articles/dose-rate">dose rate</a>: gives an instantaneous value over time<ul><li>often used in environmental, radiopharmaceutical and equipment checks</li></ul>
-<li>total dose; the amount of activity over a given time frame<ul><li>patient or personnel dosimetry </li></ul>- +<li>total dose: the amount of activity over a given time frame<ul><li>patient or personal dosimetry</li></ul>
-<li>charge collection devices; radiation energy is converted to electric charge (either directly or indirectly) and the dosimeter converts this charge into a signal output<ul>- +<li>charge collection devices: radiation energy is converted to electric charge (either directly or indirectly) and the dosimeter converts this charge into a signal output<ul>
-<li><a title="Scintillation detectors" href="/articles/gamma-camera">scintillation detectors</a></li>- +<li><a href="/articles/gamma-camera">scintillation detectors</a></li>
-<li>other type; devices made of material that changes on exposure to radiation energy<ul>- +<li>other type: devices made of material that changes on exposure to radiation energy<ul>
References changed:
- 1. Damulira E, Yusoff M, Omar A, Mohd Taib N. A Review: Photonic Devices Used for Dosimetry in Medical Radiation. Sensors (Basel). 2019;19(10):2226. <a href="https://doi.org/10.3390/s19102226">doi:10.3390/s19102226</a> - <a href="https://www.ncbi.nlm.nih.gov/pubmed/31091779">Pubmed</a>
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