X-ray imaging variable resolution

Details X-ray imaging variable resolution X-ray imaging variable resolution

1978-04-26

1980-12-30

Church, Craig E.

Radiant energy

Invisible radiant energy responsive electric signalling

With means to inspect passive solid objects

250360, 250505, G03B 4116

Patent

active

042425832

ABSTRACT:
A scanning X-ray imaging system produces an image of the transmissivity of objects by producing a relative motion of the object generally perpendicular to the triangular planes joining an X-ray point source and M X-ray line detectors, where M is equal to or greater than 1; these X-rays pass through a scanning slit assembly. The scanning slit assembly generally includes a plane of X-ray opaque material having N sets of line slits, where N is equal to or greater than 2, each set containing M identical line slits. The scanning slit assembly, in addition, includes a rotating X-ray opaque material containing N uniquely different sets of radial slits, each set containing identical radial slits. Each of the N sets of radial slits is uniquely paired with each of the N sets of line slits. During any scan of an object, M detectors, M line slits and one of the N sets of radial slits are used. The scanning X-ray imaging system provides N selections in image resolution of the scanned object. The selectivity provides radiographic images with different contrast resolution and/or spatial resolution.

REFERENCES:
patent: 3866047 (1975-02-01), Hounsfield
patent: 4031401 (1977-06-01), Jacob

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