X-ray flux reducer for a photon counting detector

US10959688B2 · kind B2 · utility

Assignee

• KONINIKLIJKE PHILIPS N.V. · NL

Inventors

• Bernhard Brendel · Norderstedt, DE
• Roland Proksa · Hamburg, DE
• Thomas Koehler · Norderstedt, DE
• Ewald Roessl · Ellerau, DE
• Heiner Daerr · Hamburg, DE
• Michael Grass · Hanstedt, DE
• Axel Thran · Hamburg, DE

Key dates

• Filing date: Nov 11, 2015
• Grant date: Mar 30, 2021
• Expiry date: Jun 8, 2037

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B6/0407
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An imaging system includes a radiation source (108) configured to rotate about an examination region (106) and emit radiation that traverses the examination region. The imaging system further includes an array of radiation sensitive pixels (112) configured to detect radiation traversing the examination region and output a signal indicative of the detected radiation. The array of radiation sensitive pixels is disposed opposite the radiation source, across the examination region. The imaging system further includes a rigid flux filter device (130) disposed in the examination region between the radiation source and the radiation sensitive detector array of photon counting pixels. The rigid flux filter device is configured to filter the radiation traversing the examination region and incident thereon. The radiation leaving the rigid flux filter device has a predetermined flux.