millisieverts
Dose measurement units
Millisieverts are units measuring radiation dose absorbed by the human body, equal to one-thousandth of a sievert.
The measurement accounts for biological effects of different radiation types, not just raw energy.
A chest X-ray delivers about 0.1 millisieverts; annual background radiation exposure averages 2-3 millisieverts.
Workers at the plant received doses exceeding 100 millisieverts.
Unit of radiation dose
- grayNeutral achromatic hue
- remRoot-based sizing unit
- radExposure measurement unit
- roentgenRadiation exposure unit
curie · threshold · limit · dosimeter · calibration · quantify · measurement · units
Soviet nuclear disaster site
- FukushimaJapanese nuclear accident site
- Three Mile IslandPennsylvania nuclear disaster site
- reactorControlled fission apparatus
- falloutPost-blast atmospheric particles
contamination · uranium · plutonium · isotopes · fission · decay · half-life · gamma rays
Protecting from harm
- lead apronProtective garment blocking X-rays
- dosimeterExposure measurement device
- regulationsEnforced rules and standards
- guidelinesSuggested rules for behavior
safety standards · monitoring · protective equipment · containment · decontamination · evacuation zone · iodine tablets · hazmat
Tomographic diagnostic imaging
- X-rayPenetrating diagnostic beam
- mammogramBreast tissue X-ray
- fluoroscopyContinuous X-ray video imaging
- PET scanRadiotracer-based internal imaging
diagnostic imaging · radiography · nuclear medicine · radiotherapy · oncology · radiologist · dental X-ray · bone scan
Electron-displacing electromagnetic energy
- DNA damageInjury to genetic material
- cell mutationChange in cellular DNA
- cancer riskChance of malignancy developing
- leukemiaMalignancy of blood-forming tissues
radiosensitivity · tissue damage · chronic exposure · radiobiology · carcinogenic · genetic damage · bone marrow · thyroid cancer
microsievert
Unit of radiation dose
roentgen · curie · threshold · limit · dosimeter · calibration · quantify · measurement · units · permissible dose
Chernobyl
Soviet nuclear disaster site
- FukushimaJapanese nuclear accident site
- Three Mile IslandPennsylvania nuclear disaster site
- reactorControlled fission apparatus
fallout · contamination · uranium · plutonium · isotopes · fission · decay · half-life · gamma rays · beta particles
shielding
Protecting from harm
- lead apronProtective garment blocking X-rays
- dosimeterExposure measurement device
- regulationsEnforced rules and standards
guidelines · safety standards · monitoring · protective equipment · containment · decontamination · evacuation zone · iodine tablets · hazmat · annual limit
CT scan
Tomographic diagnostic imaging
- X-rayPenetrating diagnostic beam
- mammogramBreast tissue X-ray
- fluoroscopyContinuous X-ray video imaging
PET scan · diagnostic imaging · radiography · nuclear medicine · radiotherapy · oncology · radiologist · dental X-ray · bone scan · screening
ionizing radiation
Electron-displacing electromagnetic energy
- DNA damageInjury to genetic material
- cell mutationChange in cellular DNA
- cancer riskChance of malignancy developing
leukemia · radiosensitivity · tissue damage · chronic exposure · radiobiology · carcinogenic · genetic damage · bone marrow · thyroid cancer