Radiographic system with improved image quality

Details Radiographic system with improved image quality Radiographic system with improved image quality

1991-11-27

1993-06-22

Fields, Carolyn E.

Radiant energy

Invisible radiation responsive nonelectric signalling

Luminescent device

430966, 430967, 430496, G03C 146, G21J 400

Patent

active

052218465

ABSTRACT:
A wide latitude, high resolution radiographic system having a relative speed of at least 150 and a contrast transfer function of at least 0.30 when measured at 6 line pairs per millimeter, comprises at least one X-ray intensifying screen in operative association with a photosensitive silver halide element having a maximum contrast of less than or equal to 3.0 produces superior images, particularly chest images over a wide range of exposures, without the decrease in image quality or contrast normally seen in wide latitude systems.

REFERENCES:
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patent: 4024069 (1977-05-01), Larach
patent: 4030922 (1977-06-01), Honjo et al.
patent: 4130428 (1978-12-01), Van Doorselaer
patent: 4140531 (1979-01-01), Jamieson
patent: 4225653 (1980-09-01), Brixner
patent: 4777125 (1988-10-01), Delfino et al.
patent: 4900652 (1990-02-01), Dickerson et al.
patent: 4931642 (1990-06-01), Hosoi et al.
patent: 5021327 (1991-06-01), Bunch et al.
patent: 5028518 (1991-07-01), Lyons et al.
patent: 5028520 (1991-07-01), Ito
Research Disclosure, 184, Aug. 1979, Item 18431, LR No. 31804, 1-2, pp. 433, 437-438.

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