dosimetry, the user in question must be registered for the body measurements.
This ring is used when the estimation of the radiation dose received by the extremities (the hands) could be significantly higher than the dose received by the body dosimeter.
The use of the ring is personal and it must be used when there is a risk of exposure to ionising radiation. In the event that gloves are being used, the ring must be placed underneath the glove.
The ring is placed on one finger of the hand, with the detector aimed towards the radiation beam and is used to estimate the dose received by the extremity (the hand) of the worker who is exposed to ionising radiation in terms of the extremity’s equivalent dose (Hext = Hp(0.07)).
When both hands are subject to a significant risk of ionising radiation, both hands are assigned this type of dosimetry. To do this, a ring is placed on one finger of each hand (for example, they are used by Nuclear Medicine Personnel, PET, etc.).
For each extremity of the facility’s user who is registered for the Dosimetry Service, two ring dosimeters shall be assigned, to be used in an alternating fashion each month, bearing in mind the dosimeter being used must not be sent off until the replacement has been received, which, given the frequency of both usage and reading, must be monthly.