MA x t = mAs (strictly mA.s but the "." is always omitted) It directly influences the radiographic density, when all other factors are constant.Īn increase in tube current (mA) results in a higher production of electrons that are inside the x-ray tube which will, therefore, increase the quantity of x-radiation more radiation will mean more photons reaching the detector and hence apparent structural density will decrease, yet the signal intensity will increase. The time factor (s) is a measure of the electrons production duration in the tube meaning 's' prescribes how long mA will last. Milliampere-seconds, also more commonly known as mAs, is a measure of radiation produced (milliamperage) over a set amount of time (seconds) via an x-ray tube.
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