Question

If a radiographer needs 80 mAs to obtain the proper exposure, and they want to use the 400 mA station, how much time must the radiographer set

A) 0.6 seconds.
B) 0.4.seconds.
C) 0.5. seconds.
D) 0.2. seconds.

Answer 1

To obtain 80 mAs of exposure using a 400 mA station, the radiographer needs to set the exposure time to 0.2 seconds.

Step-by-step explanation:

If a radiographer needs 80 mAs (milliampere-seconds) to obtain the proper exposure and wants to use the 400 mA (milliamperes) station, the time needed can be calculated using the formula: mAs = mA × seconds (s). The formula is rearranged to solve for time (s): seconds = mAs / mA. Therefore, seconds = 80 mAs / 400 mA = 0.2 seconds. This means that the radiographer must set the exposure time to 0.2 seconds to achieve the required exposure using a 400 mA station.