X-ray optical transmission grating of a focus-detector arrangement of an X-ray apparatus for generating projective or tomographic phase contrast recordings of a subject

US7639786B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Joachim Baumann · Dortmund, DE
• Christian David · Lauchringen, DE
• Martin Engelhardt · Munich, DE
• Jörg Freudenberger · Eckental, DE
• Eckhard Hempel · Bad Mergentheim, DE
• Martin Hoheisel · Erlangen, DE
• Thomas Mertelmeier · Erlangen, DE
• Franz Pfeiffer · Unterföhring, DE
• Stefan Popescu · Erlangen, DE
• Manfred Schuster · Schrick, AT

Key dates

• Filing date: Jan 31, 2007
• Grant date: Dec 29, 2009
• Expiry date: Jul 30, 2027

Classification

• Technology area (CPC G): Physics
• CPC primary: G21K2207/005
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An X-ray optical transmission grating of a focus-detector arrangement of an X-ray apparatus is disclosed, for generating projective or tomographic phase contrast recordings of a subject. In at least one embodiment, the grating includes a multiplicity of grating bars and grating gaps arranged periodically on at least one surface of at least one wafer, wherein the X-ray optical transmission grating includes at least two sub-gratings arranged in direct succession in the beam direction.