Internal Radiation Exposure Dose (Oral)
Converts the internal radiation dose from ingested radioactive material to an effective dose (in sieverts).
Radioactive substances are limited to iodine-131, cesium-134, and cesium-137.
One becquerel is the amount of radioactivity emitted by one atomic nucleus decaying per second.
The sievert is a unit of radiation dose that indicates the degree of impact on the human body.
One becquerel is the amount of radioactivity emitted by one atomic nucleus decaying per second.
The sievert is a unit of radiation dose that indicates the degree of impact on the human body.
Radiation dose = Radioactivity concentration × Dose conversion factor × Intake per day × Number of days
The dose conversion factors for internal exposure are based on the information provided in the related links below.
The dose conversion factors for internal exposure are based on the information provided in the related links below.
- Related links
Basic Knowledge on Radiation Exposure (National Institute of Radiological Sciences)- Results of Radioactivity Measurements in Tap Water (Tokyo Metropolitan Waterworks Bureau)
- Measures Regarding Radioactive Substances in Food (Ministry of Health, Labor and Welfare)
- Provisional Standards for Food and Beverages (Food Safety Commission)
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