millirem
Exposure measurement unit
A millirem is one thousandth of a rem, a unit measuring radiation dose absorbed by living tissue.
The millirem is the practical unit for everyday exposure levels—a chest X-ray delivers about 10 millirems, while annual background radiation from natural sources averages 300 millirems.
The workers' exposure was measured in millirems.
Unit of radiation dose
Producing charged particles
- gammaGreek alphabet's third
- betaGreek alphabet's second letter
- alphaFirst Greek letter
- particlesMinute pieces of matter
radioactive · decay · isotope · radionuclide · radon · neutron · cosmic rays · background radiation
Chance of malignancy developing
- radiosensitivityVulnerability to radiation damage
- chronic exposureRepeated long-term contact
- thresholdPoint of beginning
- risk assessmentEvaluating likelihood of harm
genetic damage · radiobiology · carcinogenesis · mutation · permissible dose · public exposure · diagnostic imaging
Protecting from harm
- lead apronProtective garment blocking X-rays
- protectionGuarding against harm
- monitoringOngoing observation of something
- regulationOfficial rules governing conduct
compliance · standards · inspection · warning signs · restricted area · decontamination
Adjusting for measurement accuracy
- instrumentationDesign of measuring devices
- quantificationExpressing something numerically
- conversionAct of changing states
- precisionAccuracy of measurement
sensitivity · detection · Geiger counter · reading · units · resolution · accuracy · standardization
microsievert
Unit of radiation dose
ionizing
Producing charged particles
particles · radioactive · decay · isotope · radionuclide · radon · neutron · cosmic rays · background radiation · half-life
cancer risk
Chance of malignancy developing
- radiosensitivityVulnerability to radiation damage
- chronic exposureRepeated long-term contact
- thresholdPoint of beginning
genetic damage · risk assessment · radiobiology · carcinogenesis · mutation · permissible dose · public exposure · diagnostic imaging
shielding
Protecting from harm
- lead apronProtective garment blocking X-rays
- protectionGuarding against harm
- monitoringOngoing observation of something
regulation · compliance · standards · inspection · warning signs · restricted area · decontamination
calibration
Adjusting for measurement accuracy
- instrumentationDesign of measuring devices
- quantificationExpressing something numerically
- conversionAct of changing states
precision · sensitivity · detection · Geiger counter · reading · units · resolution · accuracy · standardization