The mAs (milliampere-seconds) Calculator is a tool used in radiology to determine the exposure time and tube current necessary to achieve the desired image quality. mAs is a measure of the total quantity of X-ray radiation delivered during an exposure.
The formula for calculating mAs is:
mAs = mA (milliamperes) × exposure time (seconds)
where mA represents the tube current in milliamperes and exposure time represents the duration of the X-ray exposure in seconds.
If you set the tube current to 200 mA and the exposure time to 0.1 seconds, the mAs would be calculated as follows:
mAs = 200 × 0.1 = 20 mAs.