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Updated: Jun 5, 2026

Dosimetry for Cell Irradiation using Orthovoltage (40-300 kV) X-Ray Facilities
Published on: February 20, 2021
[Duties of the radiologist for the radiation protection of radiation workers]
1Institut de Radioprotection et Sûreté Nucléaire, BP 17, 92262 Fontenay-aux-Roses cedex, France. jean-luc.rehel@irsn.fr
Abstract:
After a risk analysis has been completed by the radiation safety officer, all entities where a source of ionizing radiation is present must established a monitored or controlled zone containing the source. When exposure exceeds the maximum regulatory dose, a dedicated color-coded controlled (yellow or orange) or restricted zone must be established. All assessments performed by the RSO should reflect normal working conditions. From these results, workers can be divided into two categories, A or B, based on their level of exposure. The workers should undergo medical and dosimetric follow-up with the use of passive dosimetry. The use of operational dosimetry should be added when working in a controlled zone. A radiation dosimetry report for each worker should be available to the occupational medicine provider to ensure appropriate dosimetric monitoring.
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