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:
Oct. 08, 2002
Filed:
Jan. 16, 2002
Shiro Oikawa, Shiga-ken, JP;
Shimadzu Corporation, Kyoto, JP;
Abstract
A radiation source and an area detector are arranged across sectional planes of an object are driven to scan and pick up images of the sectional planes. A back projection unit performs an the image reconstruction to generate three-dimensional volume data of a region of interest of the object by projecting projection data detected in varied scan positions back to predetermined lattice points of a three-dimensional lattice virtually set to the region of interest. The back projection unit generates the three-dimensional volume data, with lattice spacing along a sectional axis extending substantially through the center of the region of interest and perpendicular to the sectional planes, among the three orthogonal axes of the three-dimensional lattice, made larger than lattice spacing in the two other directions. This reduces the amount of data back-projected, and shortens the processing time for the image reconstruction.