Focus-detector arrangement of an X-ray apparatus for generating projective or tomographic phase contrast recordings

US7433444B2 · 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: Oct 7, 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 an observed region of a subject. In at least one embodiment, the arrangement includes a radiation source which emits a coherent or quasi-coherent X-radiation and irradiates the subject, a phase grating which is arranged behind the subject in the beam path of the radiation source and generates an interference pattern of the X-radiation in a predetermined energy range, and an analysis-detector system which detects at least the interference pattern generated by the phase grating in respect of its phase shift with position resolution. Further, the beam path of the X-radiation used diverges in at least one plane between the focus and the detector.