Measurements. This is shown in the accompanying diagram. Dosimeter calibration The "slab" phantom is used to represent the human torso for calibration of whole body dosimeters. This replicates the radiation scattering and absorption effects of the human torso. The International Atomic Energy Agency states "The slab phantom is 300 mm × 300 mm × 150 mm depth to represent the human torso". Radiation related measurement quantities Process irradiation verification Manufacturing processes that treat products with ionizing radiation, such as food irradiation, use dosimeters to calibrate doses deposited in the matter being irradiated. These usually must have a greater dose range than personal dosimeters, and doses are normally measured in the unit of absorbed dose: the gray (Gy). The dosimeter is located on or adjacent to the items being irradiated during the process as a validation of dose levels received. Gallery See also Comparison of dosimeters Geiger counter Ionisation chamber Operational instruments of the Royal Observer Corps Scintillation counter References External links A photographic list of radiation dosimeters Space Radiation Dosimetry: Lessons Learned and Recommendations Dosimeters Ionising radiation detectors Radiation protection