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. 18, 1991
Filed:
Jun. 20, 1990
Yasuo Saito, Tochigi, JP;
Mitsuru Yahata, Ootawara, JP;
Kouji Honjo, Funabashi, JP;
Takayuki Matsubayashi, Tochigi, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A fourth-generation X-ray CT scanner device comprises an X-ray tube for irradiating X-rays in a sector form to an object while moving on a circular orbit around the object, an annular X-ray detector array disposed coaxially with and inside the circular orbit of the X-ray tube and arranged to surround the object, for detecting the X-rays which have been irradiated from the X-ray tube and passed through the object for each channel, and a reconstruction unit for acquiring an output of the detector array to effect the reconstruction process and create a tomographic image. The X-ray array is formed of a large number of solid-state X-ray detectors and a plurality of the detectors constitute a detector module, and the array includes a large number of modules. In a displayed tomographic image, in a case where linear artifacts radiated from one point in various directions are detected, a detector module lying on an intersection (radiation point) of the artifact lines is determined as a defective detector module, and a reconstruction image is created without using output data of the defective detector module.