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Latent image fading and mean glandular dose in mobile mammographic screening

Regional Medical Physics Department, Newcastle General Hospital, Newcastle-upon-Tyne, NE4 6BE UK

This excerpt was created in the absence of an abstract.

The phenomenon of latent image fading, although well known (e.g. Kofler & Gray, 1991) is not often considered as a cause of film optical density variations in conventional radiography because of the short times between exposure and processing normally encountered. In mammography used for breast screening, however, the range of times between film exposure and processing can be much greater than in conventional radiology. When a mammogram is taken at a screening or assessment centre where processing is undertaken on site, the delay will be only a few minutes or less, but when films from mobile breast screening trailers are being returned to the centre for processing on the same working day, the delay could be in the region of 7 h.

Received for publication July 10, 1992. Accepted for publication August 10, 1992.