X-ray encoding and decoding system

Details X-ray encoding and decoding system X-ray encoding and decoding system

1973-12-26

1976-04-13

Griffin, Robert L.

Telegraphy

Systems

Simplex-reversing periodic

178DIG5, 250274, 350162SF, H04N 300, G01N 2320, G02B 518

Patent

active

039506134

ABSTRACT:
An x-ray beam is transmitted through an object under study and through an encoding grating structure consisting of alternate stripes of materials each having different x-ray absorption characteristics. The recorded image has a grating structure which is modulated by the energy spectrum information represented by the difference of the absorption characteristics of the two stripe materials. The grating amplitude information is decoded by coherent optical filtering or by scanning and used to indicate the presence of specific materials in the object.

REFERENCES:
patent: 3229089 (1966-01-01), Sasao
patent: 3766383 (1973-10-01), Harris et al.
patent: 3801785 (1974-04-01), Barrett
patent: 3829688 (1974-08-01), Barrett

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