Abstract

We were very interested to read the paper by J. Law “A new phantom for mammography” (1991). We have been advocates of this particular phantom for some time and have used it regularly on a total of 29 mammography units (nine different makes/types in all) over the past 2 years. One could of course use different methods of scoring the image quality perceived on test films and the degree of sensitivity to changes of kilovoltage, film processing etc. will clearly depend on the scoring system chosen.

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