Dosimeters

Last revised by Raymond Chieng on 2 Nov 2023

Dosimeters are a form of devices to monitor ionizing radiation. 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, radiopharmaceutical and equipment checks

  • total dose: the amount of activity over a given time frame

    • patient or personal dosimetry

Types of dosimeters

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