PUB530 How much is enough.pdf (150.15 kB)
How much is enough: factors affecting the optimal interpretation of breast screening mammograms
online resource
posted on 2008-04-28, 08:29 authored by Hazel J. Scott, Alastair GalePERFORMS (Personal Performance in Mammographic Screening), a self-assessment scheme for mammographers is
undertaken as an educational tool by film-readers involved in reading breast-screening films in the UK. The scheme
has been running as a bi-annual exercise since its inception in 1991. In addition to completing the scheme each year,
the majority of film-readers also choose to complete a questionnaire, administered as part of the scheme, indicating
key aspects of their every-day reading practice. These key aspects include volume of cases read per week, time-ontask
reading screening films, incidence and time of break periods as well as typical number of film-reading sessions
per week. Previous recommendations on best screening practice (significantly the optimum time on task) were
considered in the light of these film-readers’ self-reports on a current PERFORMS case set. In addition we looked at
performance accuracy of over 450 film-readers reading PERFORMS cases (60 difficult mammographic cases).
Performance on measures akin to True Positive (Correct Recall Percentages) and True Negative (Correct Return to
Screen Percentages) decisions were investigated. Data presented demonstrate that individual behaviours in real life
screening, for the interpretation of mammographic cases, affect film-reading accuracy on a test set of mammograms
for specificity and sensitivity (namely volume of cases read per week and film-reading experience). The
consequences, in light of previous research, for best screening practice in real life are considered.
History
School
- Science
Department
- Computer Science
Citation
SCOTT, H.J. and GALE, A.G., 2007. How much is enough : factors affecting the optimal interpretation of breast screening mammograms. Proceedings of SPIE Medical Imaging Conference 2007 : Image Perception, Observer Performance and Technology Assessment. San Diego, CA, USAPublisher
SPIEPublication date
2007Notes
This is a conference poster presentationLanguage
- en