mAs in Radiography

What does the abbreviation "mAs" stand for in radiography?

• milliampere-seconds

• millisecond-amperes

• microampere-seconds

• milliampere-slices

Which of the following is the correct unit for mAs?

• Coulombs

• Seconds

• milliampere-seconds

• Watts

Which two factors are multiplied to calculate mAs in radiography?

• kVp and exposure time

• mA and exposure time

• kVp and mA

• Exposure time and distance

Increasing the mAs will have what effect on the radiographic image?

• Decrease image brightness

• Increase image density

• Decrease image contrast

• Increase image sharpness

Which of the following is a primary factor that affects the value of mAs selected for an exposure?

• Patient size

• Room temperature

• Film brand

• Grid ratio

If the exposure time is doubled while keeping mA constant, what happens to the mAs?

• It is halved

• It remains the same

• It is doubled

• It is tripled

A radiographer needs to maintain the same mAs but reduce motion blur by halving the exposure time. What should be done to the mA?

• Double the mA

• Halve the mA

• Keep mA the same

• Reduce mA to one-fourth

Which adjustment would best compensate for an underexposed digital radiograph due to insufficient mAs?

• Increase kVp

• Increase mAs

• Decrease SID

• Decrease mAs

How does increasing mAs affect the quantum noise in a digital radiograph?

• Increases quantum noise

• Decreases quantum noise

• Has no effect on quantum noise

• Eliminates quantum noise completely

A radiographer is imaging a thicker body part and notices the image is too light. What is the most appropriate adjustment to improve image quality?

• Decrease mAs

• Increase mAs

• Decrease kVp

• Increase SID