Mammography Jeopardy UPDATED Exam
Questions and CORRECT Answers
Nominal focal size of 0.3 means - CORRECT ANSWER - the effective focal spot is 0.3
Full field digital mammography what determines which exposure field will be chosen to use with
each patient? - CORRECT ANSWER - The size of the compression paddle.
What is the interface material in mammography grids? - CORRECT ANSWER - carbon
What 2 imaging factors are grids used to control? - CORRECT ANSWER - Scatter and
contrast
What is the grid ratio used in mammography? - CORRECT ANSWER - 3:1 and 5:1
Why are MA stations fixed in mammography? - CORRECT ANSWER - to prevent tube
burn out
Focal spot measurements report the actual or effective focal spot? - CORRECT
ANSWER - Effective
What is the name of the principle that allows a large area of focal spot heating while keeping the
effective spot small? - CORRECT ANSWER - Line focus principle
What focal spot size is used with magnification? - CORRECT ANSWER - 0.1mm
Where does the resolution measure the sharpest? - CORRECT ANSWER - anode
, Name at least 2 types of filters in mammography? - CORRECT ANSWER - Moly and
Rhodium
What material is used in the xray tubes window to allow photons to pass through? - CORRECT
ANSWER - Beryllium
How do the mammography machines compression paddles accommodate breast that don't
compress flat? - CORRECT ANSWER - compression paddles tilt
what is the difference between KVP and Kev? - CORRECT ANSWER - KVP (oven temp)
max volage Kev: intensity
Advantage of the heel effect - CORRECT ANSWER - stronger intensity at the
cathode/chest vs anode/ areola
what 3 factors determine the mammo spectrum? - CORRECT ANSWER - kvp anode
material filter in the beam
what is the reason why moly anode is used for average breast size? - CORRECT
ANSWER - characteristic radiation
Why is the rhodium anode used in a mammography unit? - CORRECT ANSWER - larger
breast more penetrating xray beam.
why chose a moly filter? - CORRECT ANSWER - attenuate all kevs above 20
why would we never use a rh/mo taraget? - CORRECT ANSWER - filter out the needed
bremstralling radiation needed
2 roles of filtration? - CORRECT ANSWER - remove soft photons that increase dose
remove high energy that decrease contrast
Questions and CORRECT Answers
Nominal focal size of 0.3 means - CORRECT ANSWER - the effective focal spot is 0.3
Full field digital mammography what determines which exposure field will be chosen to use with
each patient? - CORRECT ANSWER - The size of the compression paddle.
What is the interface material in mammography grids? - CORRECT ANSWER - carbon
What 2 imaging factors are grids used to control? - CORRECT ANSWER - Scatter and
contrast
What is the grid ratio used in mammography? - CORRECT ANSWER - 3:1 and 5:1
Why are MA stations fixed in mammography? - CORRECT ANSWER - to prevent tube
burn out
Focal spot measurements report the actual or effective focal spot? - CORRECT
ANSWER - Effective
What is the name of the principle that allows a large area of focal spot heating while keeping the
effective spot small? - CORRECT ANSWER - Line focus principle
What focal spot size is used with magnification? - CORRECT ANSWER - 0.1mm
Where does the resolution measure the sharpest? - CORRECT ANSWER - anode
, Name at least 2 types of filters in mammography? - CORRECT ANSWER - Moly and
Rhodium
What material is used in the xray tubes window to allow photons to pass through? - CORRECT
ANSWER - Beryllium
How do the mammography machines compression paddles accommodate breast that don't
compress flat? - CORRECT ANSWER - compression paddles tilt
what is the difference between KVP and Kev? - CORRECT ANSWER - KVP (oven temp)
max volage Kev: intensity
Advantage of the heel effect - CORRECT ANSWER - stronger intensity at the
cathode/chest vs anode/ areola
what 3 factors determine the mammo spectrum? - CORRECT ANSWER - kvp anode
material filter in the beam
what is the reason why moly anode is used for average breast size? - CORRECT
ANSWER - characteristic radiation
Why is the rhodium anode used in a mammography unit? - CORRECT ANSWER - larger
breast more penetrating xray beam.
why chose a moly filter? - CORRECT ANSWER - attenuate all kevs above 20
why would we never use a rh/mo taraget? - CORRECT ANSWER - filter out the needed
bremstralling radiation needed
2 roles of filtration? - CORRECT ANSWER - remove soft photons that increase dose
remove high energy that decrease contrast
