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:
Sep. 06, 1988
Filed:
Apr. 21, 1986
Hitachi Medical Corporation, Tokyo, JP;
Abstract
A CT scanner including a scanning device including (a) device for rotating an x-ray source around an object to be examined, the x-ray source radiating x-rays, while the x-ray source is being rotated, in the form of fan beams covering a region of the object to be examined, and (b) a multielement x-ray detector for detecting x-ray fan beams transmitted through the object to thus collect data around the irradiated object; an arithmetic device for arithmetically reconstructing the distribution of the x-ray absorption coefficients of the object across a measured cross-section from the data; and a display for displaying the distribution where the arithmetic device includes a device for producing data equivalent to data derived from parallel beams not regularly spaced apart from each other from the collected data around the irradiated object, a device for subjecting the produced data to filtering, and a device for correcting inhomogeneity in the data equivalent to data derived from parallel beams not regularly spaced and for back-projecting the image of the distribution.