milliampere-second

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milliampere-second

 
a unit of radiographic exposure equal to the product of the milliamperage and the exposure time in seconds. Abbreviated mAs.

milliampere-second (mAs)

a measure of electric charge obtained by multiplying the electric current in milliamperes by the time in seconds. It is used to describe the exposure setting of a radiography machine and determines the density of the radiographic image.

mil·li·am·pere-sec·ond

(mA-s) (mil'i-am'pēr-sek'ŏnd)
A radiologic unit denoting the product of the number of electrons applied to the cathode of the x-ray tube multiplied by the exposure time in seconds; it directly determines the amount of x-ray energy produced.
Synonym(s): milliampere-impulse.

milliampere-second

a unit of radiographic exposure equal to the product of the milliamperage and the exposure time in seconds. Abbreviated mAs, mA˙s.