The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 11, 1978
Filed:
Nov. 17, 1976
Applicant:
Inventors:
Robin Geoffrey Marsh, Reading, EN;
Ian Alexander Fleming, Maidenhead, EN;
Assignee:
EMI Limited, Middlesex, EN;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B / ; G01N / ; H05G / ;
U.S. Cl.
CPC ...
250360 ; 2504 / ;
Abstract
In a medical radiographic apparatus of the kind in which a fan shaped spread of X-rays is subject to lateral and orbital motions, it is disclosed that the orbital step between each lateral scan need not be exactly related to the angular spread of the fan provided that parallel sets of beams are irradiated over a sufficient number of angles to give a proper evaluation of the absorption of the radiation throughout an examined slice. The orbital step may be larger or smaller than the fan angle and may be variable in the course of the scan if desired.