X-ray image encoding by spatial modulation of a storage phosphor screen
OwnerRobert E. Alvarezinventor
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Abstract
Multiple x-ray images are encoded onto a single storage phosphor screen detector for later scanning, processing, and viewing. The x-ray images are encoded using spatial frequency multiplexing onto high frequency carriers. The encoding process relies only on light with no mechanical motion. The light erases selected portions of the image data but leaves sufficient information to reconstruct the original images. The reconstruction process relies on conventional sampling theory with the additional step of solving a system of equations for the individual x-ray image information.
Claims9
Apparatus for encoding x-ray image information comprising:
- (a) a storage phosphor screen detector;
- (b) a controller means;
- and,
- (c) a controlled erasing means for erasing latent x-ray image information recorded by said storage phosphor screen detector in a set of regions spaced periodically across the surface of said storage phosphor screen detector;
- wherein the remaining image information can be used to reconstruct a representation of said x-ray image information.
In a method for encoding x-ray image information onto a storage phosphor screen detector for subsequent decoding the steps of:
- (a) irradiating said detector with an x-ray image creating a latent image in said detector;
- (b) erasing said detector with erasing means for erasing said latent image in a set of regions spaced periodically across the surface of the storage phosphor screen;
- wherein the remaining image information can be used to reconstruct a representation of said x-ray image information.
Dependencies are inferred from the claim text.