Agfa Gevaert Nv

Agfa-gevaert

Guy Vastenaeken

Kathy Elst

Luc J Heremans

J&uuml;rgen Van Limbergen

Rudy Goedeweeck

In a radiographic image recording method and apparatus, the output of a source of radiation is adjusted taking into account the characteristics of an identified recording medium and the deviation of the actual processing conditions from expected processing conditions.

Radiographic image recording method and apparatus

A photographic silver halide material and a method using said material for mammography are disclosed. The photographic material has a large dynamic range and a high contrast, so that lesions deep in the glandular tissue are accurately detected, and also clearly depicts thin tissue such as the skin line of the breast. The sensitometric curve of optical density versus logarithmic exposure logE of said photographic material is characterised by (i) an average gradation of at least 3.5 between Dmin+1.0 and Dmin+2.5; and (ii) a local gradient ranging from 0.7 to 1.8 and an optical density not higher than 3.5 at the point where logE equals SP+0.8 (SP being defined as the logE at which the optical density equals Dmin+1.0); and (iii) an optical density of at least 3.7 at the point where logE equals SP+1.3.

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Wespelaar, Belgium

Guy Vastenaeken