Method and apparatus for generation of a digital x-ray image of an examination subject

US7342999B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Katrin Johansson · Erlangen, DE
• Thomas Mertelmeier · Erlangen, DE

Key dates

• Filing date: Aug 3, 2006
• Grant date: Mar 11, 2008
• Expiry date: Aug 3, 2026

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B6/542
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

In a method and apparatus for generation of a digital x-ray image of an examination subject with an x-ray tube and a digital x-ray detector, a preliminary total dose required for correct exposure is determined using prior knowledge and a complete pre-image of the examination subject is acquired with a partial dose that is smaller than the preliminary total dose. A remaining dose is determined from the pre-image by image evaluation. A complete following image is acquired with this remaining dose, and the final x-ray image is assembled from the pre-image and the following image.