Focus-detector arrangement with X-ray optical grating for phase contrast measurement

US7453981B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

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

Key dates

• Filing date: Jan 31, 2007
• Grant date: Nov 18, 2008
• Expiry date: Jan 31, 2027

Classification

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

Abstract

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, least one grating of a focus-detector arrangement includes, at least partially, a macroscopically homogeneous medium which, when excited by an energy source, assumes a periodic structure/standing wave field that leads to beam splitting and the formation of an interference pattern when the X-ray beam passes through.