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:
Jun. 17, 1997
Filed:
Sep. 17, 1992
Katsutoshi Sato, Hitachi, JP;
Shigeru Izumi, Tokyo, JP;
Shoji Kamata, Yokohama, JP;
Hiroshi Miyai, Hitachi, JP;
Hiroshi Kitaguchi, Naka-machi, JP;
Masahiro Kondo, Hitachi, JP;
Seishi Watahiki, Katsuta, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An imaging method of an X-ray computerized tomography (X-ray CT) comprising the steps of reconstructing a partial region including a region of interest from penetrating data of an object, extracting only shape information from the reconstructed image, setting a threshold function determined by resolution to the reconstructed image information which is equivalent to linear absorption coefficient distribution (density), extracting the reconstructed image information by making the information into bi-values or tri-values based on the threshold function or by differentiating the information, and extracting and imaging only a portion where the linear absorption coefficient distribution (density) changes stepwise.