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:
Jan. 26, 1988
Filed:
Nov. 25, 1986
Joerg Haendle, Erlangen, DE;
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Abstract
An X-ray diagnostics installation with spatial frequency high-pass filtering has an X-ray tube, in image intensifier video chain, first and second image memories, and a difference stage for subtracting images in the memories and thereby forming a difference signal between first video signals and chronologically succeeding second video signals. The resulting image is displayed on a monitor. The installation further has a control unit for controlling the size of the tube focus. A video signal for an X-ray exposure produced using a first size of the tube focus is entered into one of the memories, and this signal is subtracted in the difference stage from a video signal for an X-ray exposure produced with a second size of the tube focus.