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A monitor unit (MU) is a measure of machine output from a clinical accelerator for radiation therapy such as a linear accelerator or an orthovoltage unit. Monitor units are measured by monitor chambers, which are ionization chambers that measure the dose delivered by a beam and are built into the treatment head of radiotherapy linear accelerators.
Monitor unit (MU), a measure of absorbed dose from a linear accelerator in radiation therapy = 0.001 Gray SARS-CoV-2 Mu variant , one of the variants of SARS-CoV-2, the virus that causes COVID-19 Mouse unit , the amount of toxin required to kill a 20g mouse in 15 minutes via Intraperitoneal injection
Megavoltage X-rays are produced by linear accelerators ("linacs") operating at voltages in excess of 1000 kV (1 MV) range, and therefore have an energy in the MeV range. The voltage in this case refers to the voltage used to accelerate electrons in the linear accelerator and indicates the maximum possible energy of the photons which are subsequently produced. [1]
A typical superficial X-ray energy might be 100 kVp per 3 mmAl – "100 kilovolts applied to the X-ray tube with a measured half-value layer of 3 millimeters of aluminum". The half-value layer for orthovoltage beams is more typically measured using copper; a typical orthovoltage energy is 250 kVp per 2 mmCu. [7]
The roentgen or röntgen (/ ˈ r ɛ n t ɡ ə n,-dʒ ə n, ˈ r ʌ n t-/; [2] symbol R) is a legacy unit of measurement for the exposure of X-rays and gamma rays, and is defined as the electric charge freed by such radiation in a specified volume of air divided by the mass of that air (statcoulomb per kilogram).
Bruce Mansfield Power Plant, at a capacity of 2,490 MW, is the largest power plant to be decommissioned in the United States. This is an incomplete list of decommissioned coal-fired power stations in the United States.
Aircraft Storage Unit Became No. 33 MU [55] No. 41 MU RAF Khormaksar Hawker Hunters, Scottish Aviation Twin Pioneers, Vickers Valettas [citation needed] No. 42 MU RAF Lichfield between December 1939 and 6 March 1940. [56] Aircraft Storage Unit Became No. 51 MU No. 43 MU RAF Cardiff between 3 February 1940 and 6 March 1940 Became No. 52 MU No. 44 MU
The outhouse is a unit of area used in nuclear physics equal to 10 −6 barns (100 am 2 = 10 −34 m 2). The barn (b) is a unit of area used in nuclear physics equal to one hundred femtometres squared (100 fm 2 = 10 −28 m 2). The are (a) is a unit of area equal to 100 m 2. The decare (daa) is a unit of area equal to 1000 m 2. The hectare (ha ...