Module 4 - Mammography
Why does technique differ in mammography from general xray? - answer Technique
needs to be differ between mammography and general xray, because it is imaging soft
tissue - muscle and fat. Since soft tissue is being imaged, a low kV needs to be used
What four systems were used for imaging of the breast and which are still used today? -
answer- Direct film exposure
- Xeromammography
- Screen film
- Digital
- Film screen and digital are still used today
What were the advances of film screen over other historical techniques? - answer-
Intensifying screens increased the speed of the system, which lowered patient dose
- Screen combination enhanced contrast due to direct exposure techniques
What type of film is used in mammography? - answerSingle emulsion film that is
matched with a single back screen to avoid light crossover
What was learned by the digital mammography trial studies? - answerDigital
mammography was equal to screen-film mammography for mature, fatty breasts, but it
was superior when imaging younger, dense breasts
Why is there a low risk of breast cancer to be caused during or from mammography? -
answerThere is a low risk of breast cancer caused during or from mammography
because the breasts are considered "mature" during the screening age for patient,
which makes them low on the radiation sensitivity level
What type of technique needs to be used in mammography and why? - answerLow kV -
this allows us to differentiate tissues and improve contrast resolution because of forced
absorption. Absorption depends on tissue mass density and its effective atomic number
Compression is essential during mammography; what are the benefits or reasons
compression is used? - answerIt makes the breast more uniform. Compression brings
the breast tissue close to the image receptor and also reduces absorption, blur and
motion. Compression can also reduce superimposed structures
Why does technique differ in mammography from general xray? - answer Technique
needs to be differ between mammography and general xray, because it is imaging soft
tissue - muscle and fat. Since soft tissue is being imaged, a low kV needs to be used
What four systems were used for imaging of the breast and which are still used today? -
answer- Direct film exposure
- Xeromammography
- Screen film
- Digital
- Film screen and digital are still used today
What were the advances of film screen over other historical techniques? - answer-
Intensifying screens increased the speed of the system, which lowered patient dose
- Screen combination enhanced contrast due to direct exposure techniques
What type of film is used in mammography? - answerSingle emulsion film that is
matched with a single back screen to avoid light crossover
What was learned by the digital mammography trial studies? - answerDigital
mammography was equal to screen-film mammography for mature, fatty breasts, but it
was superior when imaging younger, dense breasts
Why is there a low risk of breast cancer to be caused during or from mammography? -
answerThere is a low risk of breast cancer caused during or from mammography
because the breasts are considered "mature" during the screening age for patient,
which makes them low on the radiation sensitivity level
What type of technique needs to be used in mammography and why? - answerLow kV -
this allows us to differentiate tissues and improve contrast resolution because of forced
absorption. Absorption depends on tissue mass density and its effective atomic number
Compression is essential during mammography; what are the benefits or reasons
compression is used? - answerIt makes the breast more uniform. Compression brings
the breast tissue close to the image receptor and also reduces absorption, blur and
motion. Compression can also reduce superimposed structures
