Patent · US Active

X-ray diagnostic apparatus and method for operating an x-ray diagnostic apparatus for determining quality values

US7539336B2 · kind B2 · utility

1Cited by

7References

19Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Stefan Böhm · Oberasbach, DE
Peter Durlak · Erlangen, DE
Volker Heer · Gundelsheim, DE
Martin Kolarjk · Koblenzer Straße, DE

Key dates

Filing date	Dec 2, 2005
Grant date	May 26, 2009
Priority date	—
Expiry date	Oct 29, 2027

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S128/922
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

The invention relates to an angiographic x-ray diagnostic apparatus with an x-ray radiator having an x-ray tube, with a patient positioning table having a radiation-transparent positioning plate and mattress, with an x-ray detector, with an imaging system, an image processing unit and a measuring device to which the output signals of the x-ray detector are fed and which has a first device for determining a value determining the reproduction quality of clinically relevant objects, a second device for determining local variances of the noise in a homogenous image region of different x-ray images and a device for taking the ratio of the output values of the two devices.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.