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:
Jul. 09, 2002
Filed:
Jul. 28, 2000
Hiroyuki Kawai, Tokyo, JP;
Ken Ueda, Ome, JP;
Hitachi Medical Corporation, Tokyo, JP;
Abstract
In an X-ray imaging apparatus in which X-ray beams are irradiated on a subject ( ) and a tomogram of the subject is reconstructed from helically scanned X-ray images and displayed, reconstructing means ( ) includes selecting means ( ) for selecting, from X-ray images measured from the 360° periphery of the subject at a cross-sectional position specified by an inspector, X-ray images measured within a range of −360° to +360° distant from a rotation angle of an imaging system at the cross-sectional position, filter operation means ( ) for applying a filtering process to the selected X-ray images, interpolation operation means ( ) for interpolating projection values of X-ray images in respect of individual pixels at the cross-sectional position from distances in the moving direction of moving means ( ) between positions of images selected by an operation unit and the cross-sectional position specified by the inspector and the X-ray images, and inverse projection operation means ( ) for reconstructing a tomogram at the cross-sectional position from an interpolated image, and the obtained tomogram is displayed on display means ( ).