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Readers designed to determine the radiation dose that is absorbed by thermoluminescent dosimeters (TLD). Manual readers typically heat the dosimeters one at a time using a heating system (e.g., a hot plate, hot gas) and the light that is emitted from the TLD crystal is then measured in a dark chamber. Automated readers can process several TLDs simultaneously (e.g., by mounting the dosimeters on an aluminum and Teflon card. The automated units typically use photomultiplier tubes, electronic circuits, and dedicated software. TLD readers are intended for a variety of applications, including total or partial body irradiation dose verification and/or radiotherapy planning.
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