milliampere-second(redirected from milliampere-impulse)
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a unit of radiographic exposure equal to the product of the milliamperage and the exposure time in seconds. Abbreviated mAs.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
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.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012