MOD 11 DIGITAL BREAST
TOMOSYNTHESIS (DBT) UPDATED
ACTUAL Questions and CORRECT
Answers
Which type of breast tissue makes the detection of small breast cancers difficult? - CORRECT
ANSWER - dense fibroglandular breast tissue
What percentage of women experience 5-year survival rates when localized (early) cancer is
detected early? - CORRECT ANSWER - 99% of women
How are cancer and glandular tissue visualized on a mammogram? - CORRECT
ANSWER - appear radiographically dense on mammographic images
Which ACR breast density categories include breast tissue capable of hiding small breast
cancers? - CORRECT ANSWER - Category "c" density could obscure detection of small
masses
How does DBT effect patient recall rates in women with dense breast tissue? - CORRECT
ANSWER - shown to reduce the patient recall rate by eliminating the confusion that arises
from breast tissue overlap, especially in dense breasts
How do women with fatty breasts compare to women with dense breasts regarding breast cancer
risk? - CORRECT ANSWER - It is estimated that women with dense breasts are four to
six times more likely to develop breast cancer than women with fatty tissue.
How is breast density measured? - CORRECT ANSWER - The volumetric breast density
can be determined using the calculation of the volume of fibroglandular tissue divided by the
total volume of tissue within the breast
, How is breast tissue displayed in traditional 2D mammography? - CORRECT ANSWER -
Traditional 2-dimensional mammography displays the breast tissue in a single, flat image and
structures located at different heights within the breast tissue are overlapped.
What are the mammography screening guidelines of the American College of Radiology and
Society of
Breast Imaging for women with average risk for developing breast cancer? - CORRECT
ANSWER - Annually for asymptomatic women age 40 and older who are at average risk
for breast cancer
For which type of clinical use was DBT approved by the FDA? - CORRECT ANSWER -
approved by the FDA as a new breast imaging modality for clinical use in breast cancer
screening and diagnosis in the United States in February 2011
How does DBT influence the radiologist's interpretation skills? - CORRECT ANSWER -
provides the radiologist with a greater degree of confidence during mammographic
interpretation.
What is the movement of the X-ray tube during 3D imaging? - CORRECT ANSWER - As
the X-ray tube moves in an arc over the breast, a series of low dose images are acquired at
different angles. rotation of the detector/source is limited (15-degrees for Hologic and 50-
degrees for Siemens
What findings must the optimal tomosynthesis system visualize? - CORRECT ANSWER -
must also properly visualize calcifications, masses, architectural distortions and areas of
asymmetries.
What are the benefits of 3D mammography? - CORRECT ANSWER - improved
diagnostic accuracy,
lower screening recall rates,
increased detection of early cancer,
better lesion characterization
TOMOSYNTHESIS (DBT) UPDATED
ACTUAL Questions and CORRECT
Answers
Which type of breast tissue makes the detection of small breast cancers difficult? - CORRECT
ANSWER - dense fibroglandular breast tissue
What percentage of women experience 5-year survival rates when localized (early) cancer is
detected early? - CORRECT ANSWER - 99% of women
How are cancer and glandular tissue visualized on a mammogram? - CORRECT
ANSWER - appear radiographically dense on mammographic images
Which ACR breast density categories include breast tissue capable of hiding small breast
cancers? - CORRECT ANSWER - Category "c" density could obscure detection of small
masses
How does DBT effect patient recall rates in women with dense breast tissue? - CORRECT
ANSWER - shown to reduce the patient recall rate by eliminating the confusion that arises
from breast tissue overlap, especially in dense breasts
How do women with fatty breasts compare to women with dense breasts regarding breast cancer
risk? - CORRECT ANSWER - It is estimated that women with dense breasts are four to
six times more likely to develop breast cancer than women with fatty tissue.
How is breast density measured? - CORRECT ANSWER - The volumetric breast density
can be determined using the calculation of the volume of fibroglandular tissue divided by the
total volume of tissue within the breast
, How is breast tissue displayed in traditional 2D mammography? - CORRECT ANSWER -
Traditional 2-dimensional mammography displays the breast tissue in a single, flat image and
structures located at different heights within the breast tissue are overlapped.
What are the mammography screening guidelines of the American College of Radiology and
Society of
Breast Imaging for women with average risk for developing breast cancer? - CORRECT
ANSWER - Annually for asymptomatic women age 40 and older who are at average risk
for breast cancer
For which type of clinical use was DBT approved by the FDA? - CORRECT ANSWER -
approved by the FDA as a new breast imaging modality for clinical use in breast cancer
screening and diagnosis in the United States in February 2011
How does DBT influence the radiologist's interpretation skills? - CORRECT ANSWER -
provides the radiologist with a greater degree of confidence during mammographic
interpretation.
What is the movement of the X-ray tube during 3D imaging? - CORRECT ANSWER - As
the X-ray tube moves in an arc over the breast, a series of low dose images are acquired at
different angles. rotation of the detector/source is limited (15-degrees for Hologic and 50-
degrees for Siemens
What findings must the optimal tomosynthesis system visualize? - CORRECT ANSWER -
must also properly visualize calcifications, masses, architectural distortions and areas of
asymmetries.
What are the benefits of 3D mammography? - CORRECT ANSWER - improved
diagnostic accuracy,
lower screening recall rates,
increased detection of early cancer,
better lesion characterization
