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. 23, 1992
Filed:
Jul. 10, 1991
Rudolf Schittenhelm, Erlangen, DE;
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Abstract
A computer tomography apparatus has an annular anode which surrounds a detector ring disposed coaxially relative thereto and having a cathode ring also disposed coaxially relative to the anode. The cathode ring has a series of cathodes which are respectively enabled step-by-step to emit electrons onto the anode so as to displace the focus. Each cathode has a deflector unit associated therewith which deflects the focus for that cathode along the circumference of the anode. One or more cathodes with associated deflection units, and an anode section, can be constructed in combination as a module. The number of focus positions is thereby increased, and the time for acquiring a set of image data is significantly reduced.