- equivalent roentgen unit
- 当量伦琴单位
Medical Chinese dictionary (湘雅医学词典). 2013.
equivalent roentgen unit
Look at other dictionaries:
Roentgen (unit) — This article is about the unit of measurement. For Röntgen radiation, see X ray. For other uses, see Roentgen. The roentgen (R, also röntgen) is a unit of measurement for exposure to ionizing radiation (such as X ray and gamma rays), and is named … Wikipedia
Equivalent dose — The equivalent absorbed radiation dose, usually shortened to equivalent dose, is a computed average measure of the radiation absorbed by a fixed mass of biological tissue, that attempts to account for the different biological damage potential of… … Wikipedia
Roentgen equivalent man — Named after Wilhelm Röntgen (German scientist, 1845 1923), the roentgen equivalent in man (or mammal[1]) or rem (symbol rem) is a unit of radiation dose equivalent. It is the product of the absorbed dose in rads and a weighting factor, WR, which… … Wikipedia
unit — 1. One; a single person or thing. 2. A standard of measure, weight, or any other quality, by multiplications or fractions of which a scale or system is formed. 3. A group of persons or things considered as a whole because of mutual activities or… … Medical dictionary
Rad (unit) — The rad is a unit of absorbed radiation dose. The rad was first proposed in 1918 as that quantity of X rays which when absorbed will cause the destruction of the malignant mammalian cells in question... [1] It was defined in CGS units in 1953 as… … Wikipedia
Gray (unit) — The gray (symbol: Gy) is the SI unit of absorbed radiation dose of ionizing radiation (for example, X rays), and is defined as the absorption of one joule of ionizing radiation by one kilogram of matter (usually human tissue).[1] Named after the… … Wikipedia
Röntgen equivalent man — The röntgen (roentgen) equivalent in man or rem (symbol rem) is a unit of radiation dose. It is the product of the absorbed dose in röntgens (R) and the biological efficiency of the radiation. More precisely, assuming a radiation weighting factor … Wikipedia
ER — Abbreviation for endoplasmic reticulum. * * * efficiency ratio; epigastric region; ejection rate; electroresection; emergency room; endoplasmic reticulum; enhanced reactivation; enhancement ratio; entity relationship [model]; environmental… … Medical dictionary
Er — Symbol for erbium. * * * efficiency ratio; epigastric region; ejection rate; electroresection; emergency room; endoplasmic reticulum; enhanced reactivation; enhancement ratio; entity relationship [model]; environmental resistance; enzyme reactor; … Medical dictionary
ER — • efficiency ratio; • epigastric region; • ejection rate; • electroresection; • emergency room; • endoplasmic reticulum; • enhanced reactivation; • enhancement ratio; • entity relationship [model]; • environmental resistance; • enzyme reactor; •… … Dictionary of medical acronyms & abbreviations
Sievert — The sievert (symbol: Sv) is the International System of Units (SI) SI derived unit of dose equivalent radiation. It attempts to quantitatively evaluate the biological effects of ionizing radiation as opposed to just the absorbed dose of radiation … Wikipedia
