Phantom device, dark field imaging system and method for acquiring a dark field image

US10507004B2 · kind B2 · utility

Assignee

• KONINIKLIJKE PHILIPS N.V. · NL

Inventors

• Heiner Daerr · Hamburg, DE
• Thomas Koehler · Norderstedt, DE
• Hanns-Ingo Maack · Norderstedt, DE

Key dates

• Filing date: Dec 18, 2017
• Grant date: Dec 17, 2019
• Expiry date: Dec 18, 2037

Classification

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

Abstract

The present invention relates to phantom device for a dark field imaging system. Although dark field imaging is known to be sensitive to changes in the micro-structure of the tissue of a human subject that may be caused during a disease progression, there may be a need to quantify information provided by an image of the human subject. A detector signal component representing the dark image may be altered by changes of the X-ray spectrum which passes tissue of the human subject comprising micro-structures. This may be caused due to an attenuation of the X-ray radiation previously provided by an X-ray source, wherein the attenuation may be caused by tissue of the human subject, which covers said micro-structure comprising tissue. In order to provide information in clinical practice regarding the influence of attenuation to the X-ray radiation before it passes the micro-structure issue of the human subject, the phantom device for dark field imaging is proposed. The phantom device comprises a main body, wherein the main body comprises a plurality of reference parts. Each of the reference parts comprises an attenuation part and a de-coherence part. The attenuation part and the de-cohere…