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British Journal of Radiology (1995) 68, 1067-1073
© 1995 British Institute of Radiology
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The British Journal of Radiology, Vol 68, Issue 814 1067-1073, Copyright © 1995 by British Institute of Radiology

ARTICLES

A linear modelling approach to automatic interpretation of quality control measurements in mammography

CJ Kotre
Regional Medical Physics Department, Newcastle General Hospital, Newcastle-upon-Tyne, UK.

An approach to the automated interpretation of quality control data is described in which the relationship between small changes in system performance and the resulting small changes in the measured quality control test results are approximated as a set of linear equations in matrix form. The inverse of this forward matrix is then used to identify causal changes from the set of measured changes. This approach has been investigated for the case of mammographic screening quality assurance and shown to provide a potentially useful tool to assist in the interpretation task.




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