MQSA Flashcards
who regulates MQSA?
- FDA
how often does medical audit and outcome analysis need to be performed
- annually
how many months of mammo in residency?
- 3 months
recall rate should be
- 5-7%
- less than 10%
mammo facilities required to communicate with patients how?
- lay person report within 30 days of study
- written results with easy to understand language
how do patients address concern in mammo facilities?
- have to hav a consumer complaint mechanism
when needed patients can obtain their…
- original mammograms, not copies
when mammograms are determined to be substandard and risk to public health, facilities will…
- notify patients and their doctors with appropriate plan of action
who is ultimately responsible for QC program?
- interpreting physician
required resolution of mammo?
- 13 lp/mm in anode/cathode direction
- 11 lp/mm in L-R direction
how to pass image quality?
must show:
- 4 fibers
- 3 microcalcification clusters
- 3 masses
- plus acceptable artifacts
dose phantom is composed of
- 50% glandularity
- 4.2 cm thick
- dose <3mGy per image with grid
patient dose limits in mammo?
- there are none
typical patient/phantom doses are about…
- 2mGy per view, or 8mGy total on screening
average breast thickness and glandularity
- 6cm compressed
- 15-20% glandularity
digital systems use higher or lower beam quality
- higher to reduce dose and can use post-processing
two daily QA tests?
- processor QC
- darkroom cleanliness
two weekly QA tests?
- viewbox conditions
- phantom evaluation
one quarterly QA test?
- repeat analysis
three semi-annual QA tests?
- compression test
- darkroom fog
- screen-film contrast
darkroom cleanliness
- daily
darkroom fog
- semi-annually
repeat analysis
- quarterly
processor QC
- daily
phantom evaluation
- weekly
screen-film contrast
- semi-annually
compression test
- semi-annually
viewbox conditions
- weekly
target range for cancers/1000 screened
- 3-8
how many mammos to read in last 2 years of residency?
- 240
formal training requirement for mammo?
- 3 months
documented hours of mammo education?
- 60 hours
The fetal dose from a screening mammogram
negligible at <50 mGy
3 mGy (0.3 rad) is the FDA/MQSA regulatory limit for average glandular dose per mammogram exposure. The risk of organ malformations (3rd to 8th weeks of gestation) has a threshold of 100 mGy. The risk for severe mental retardation (8 to 15 weeks of gestation) has a threshold of 100 mGy.
FDA/MQSA regulatory limit for average glandular dose per mammogram exposure
3 mGy (0.3 rad) is the FDA/MQSA regulatory limit for average glandular dose per mammogram exposure.
how many fatal breast cancers would be expected when 1 million 40 yo women undergo a screening mammogram
10
3 per million per mGy per mGy with an AGD of 3 mGy
what is the most likely reduction in % in breast cancer mortality that is believed to be achieved by screening mammography?
20%
pt recalled from screening (BR-0) then gets at BR-3 on diagnostic work up. Pt decides biopsy instead of follow. The biopsy proves the finding is cancer. statistical classification for both the screening and diagnostic tests? (true/false; postive/negative)
screening: true positive. Diagnostic: false negative………
BR-0 screening mammo is a true positive if + for cancer within one year. BR-3 is a false negative if + for cancer within one year. Only 0,4, and 5 are POSITIVE assessments for the MQSA audit.
how often do mammo places have to be accredited and certified?
every 3 years
dose limit to the breast without a grid
1 mGy
