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:
Mar. 17, 1981
Filed:
Oct. 19, 1978
Isao Horiba, Nagoya, JP;
Yasuo Kuwabara, Kashiwa, JP;
Hiroshi Takagi, Tokyo, JP;
Shigeru Satou, Matsudo, JP;
Hitachi Medical Corporation, Tokyo, JP;
Abstract
An apparatus for axial transverse tomography using piercing radiation such as X-ray and .gamma.-ray for displaying a tomographic image concerning variation of radiation absorption values at a given section of a subject under examination, comprising: a scanner effecting a revolution-scanning around said subject at uniform angles while maintaining constant relative positions of a radiation source and a radiation detector with said subject intervening therebetween; an input device for setting a region of interest for being enlarged based on parameters of central angle, inter-center distance and radius ratio, to locally enlarge said tomographic image; co-ordinate system transforming circuitry for carrying out, on information within said region of interest outputted from radiation detector, a transformation of co-ordinate system corresponding to enlarged co-ordinates, from information obtained by the scanner and outputted by the radiation detector and also from the set parameters; and convolution circuitry for carrying out a convolution operation on the resulting information representing the trnsformation of co-ordinate system.