Radiant energy – Inspection of solids or liquids by charged particles – Analyte supports
Patent
1976-04-05
1979-03-13
Church, Craig E.
Radiant energy
Inspection of solids or liquids by charged particles
Analyte supports
250416TV, A61B 602
Patent
active
041444574
ABSTRACT:
Cross-sectional or oblique sectional tomographic X-ray images of a subject are obtained more quickly, easily and economically and with less cumbersome apparatus by utilizing an X-ray source in which a moving point source of X-rays is produced by sweeping an electron beam across a broad anode plate. One or more relatively small X-ray detectors are situated on the opposite side of the subject to produce X-ray counts in the course of the scanning action, the counts being indicative of variations of X-ray transmissiveness within a plane extending crosswise or obliquely through the subject. By repetitively shifting the angular relationship of the subject relative to the X-ray source and detector structure and repeating the scanning process between each such angular movement, data is obtained which is used to generate a visible cross-sectional image of the subject. By repeating the scanning process in a series of adjacent planes, data for generating a three-dimensional X-ray image of the subject may also be obtained. Processing of the X-ray detector output signals and scan position data to produce the desired images may be done using digital computer techniques or by analog apparatus.
REFERENCES:
patent: 2667585 (1954-01-01), Gradstein
patent: 3778614 (1973-12-01), Hounsfield
patent: 3780291 (1973-12-01), Stein et al.
patent: 3919556 (1975-11-01), Berninger
patent: 4002917 (1977-01-01), Mayo
patent: 4010370 (1977-03-01), Lemay
patent: 4031395 (1977-06-01), Lemay
Church Craig E.
Grigsby T. N.
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