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.

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.
References in periodicals archive ?
2001;176:289-96) was based on the assumption that pediatric abdominal CT images were acquired at 404 milliampere-seconds (mAs) and scanned from the diaphragm to the symphysis pubis.
For students to understand concepts such as inverse square law and milliampere-seconds (mAs), more examples and problem solving are needed.