Method of recognizing one or more irradiation

Details Method of recognizing one or more irradiation Method of recognizing one or more irradiation

1996-05-02

1997-07-22

Porta, David P.

X-ray or gamma ray systems or devices

Specific application

Absorption

382132, G01N 2304

Patent

active

056510420

ABSTRACT:
Radiologists may protect their subjects against unnecessary exposure to X-rays by use of X-ray opaque material. They may also use X-ray opaque material to permit multiple exposures on a single image. The resulting image contains relatively unexposed regions resulting from the shadow cast by the X-ray opaque material. This invention discloses a method for the automatic determination of the location of the boundary between multiple exposures and the boundary between signal and shadow regions within each exposure. Many hypotheses as to the location of such boundaries are generated and the final decision as to the correct hypothesis is contingent on the results of a rule-based reasoning network.

REFERENCES:
patent: 4891757 (1990-01-01), Shroy, Jr. et al.
patent: 5081580 (1992-01-01), Takeo
patent: 5268967 (1993-12-01), Jang et al.

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