Patent · US Active

Method for controlling the dose or the dose rate when recording x-ray images

US7436930B2 · kind B2 · utility

0Cited by

9References

8Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Philipp Bernhardt · Forchheim, DE
Stefan Böhm · Oberasbach, DE
Bernhard Geiger · Buckenhof, DE

Key dates

Filing date	Apr 11, 2006
Grant date	Oct 14, 2008
Priority date	—
Expiry date	Jul 6, 2026

Classification

Technology area (CPC H)Electricity
CPC primaryH05G1/30
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

With a method for controlling the dose or dose rate when recording x-ray images by means of a detector comprising image elements which record a plurality of dose data values, an actual value is determined for the dose or dose rate from the totality of the data values recorded by the image elements of a predetermined image segment, said actual value being compared with a predetermined target value in order to control the dose or dose rate when recording a further x-ray image. In accordance with the invention, the actual value is determined such that on the basis of a frequency distribution of the dose data values of the image elements assigned to the dominant, a p-quantile is determined, and that the dose data value assigned to the p-quantile is used to determine the actual value.

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