Usage
The badge is typically worn on the outside of clothing, around the chest or torso. This location monitors exposure of most vital organs and represents the bulk of body mass. The badge is worn over the protection to monitor the dose actually received to unprotected parts (parts not covered with lead, etc.).
Under special circumstances, where an operator may receive a high dose to one area of the body (e.g. the hands of a radiopharmacist) then additional monitoring of the area is required. For monitoring of hands, a miniature Thermoluminescent Dosimeter worn as a finger ring is usually used.
The film badge is not widely used in the USA, having been replaced by multi-chip thermoluminescent dosimetry. However, the FBD is the dominant dosimeter used in the rest of the world.
Read more about this topic: Film Badge Dosimeter
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