Basics of X-ray and Mammographic Systems

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What is the effect of magnification on mammography patient dose?

a) increases
b) decreases
c) has no effect

 

What change in focal spot and mA occurs when switching from non-magnification mammography to a spot magnification view?

a) a smaller focal spot and lower mA
b) a larger focal spot and lower mA
c) a smaller focal spot and higher mA
d) a larger focal spot and higher mA
e) no change

 

The tube port (window) for a mammography x-ray tube is typically made of

a) glass
b) lead
c) tungsten
d) beryllium


Which part of a mammography x-ray tube is positioned closest to the chest wall of the patient?

a) anode end
b) cathode end
c) side or long axis

 

The reason the mammography tube is positioned as it is in the previous question is

a) collimation
b) half value layer
c) heel effect
d) penumbra
e) technique

 

Compression in mammography results in increased

a) breast dose
b) exposure time
c) geometric blurring
d) patient motion
e) scatter
f) none of the above

 

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