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US 3,965,353 AGranted
Cross-sectional X-ray emission imaging system
OwnerAlbert Macovskiinventor
Life of this patent
Estimating the term…
Abstract
A sheet beam x-ray source having energy components greater than 1.02 Mev is passed through an object under study. The emitted gamma rays due to pair production are measured using a positron-sensitive coincidence counting system on either side of the excited section. The location of each detected event is made using the positron information of each detector and the location of the excited section. An image is rapidly formed which is sensitive to the atomic number and density of materials in the cross section of the object.
Claims11
Apparatus for producing an image of a cross section of an object comprising:
- means for illuminating the cross section with x-rays having energies greater than 1.02 Mev;
- position-sensitive detector means for detecting gamma rays emitted from the illuminated cross section due to pair production and producing a plurality of detected position signals;
- means for computing the point of emission of the gamma rays in the illuminated cross section using the detected position signals and producing a gamma-ray emission signal;
- and
- means for displaying the gamma-ray emission signals whereby an image of the cross section will be formed.
2 more elements
Dependencies are inferred from the claim text.