Shielding for an x-ray detector

US7405408B2 · kind B2 · utility

Assignee

• KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

• Gereon Vogtmeier · Aachen, DE
• Roger Steadman · Aachen, DE
• Klaus Engel · Veldhoven, NL
• Herfried Karl Wieczorek · Aachen, DE
• Wolfgang Eckenbach · Gangelt, DE

Key dates

• Filing date: Dec 2, 2004
• Grant date: Jul 29, 2008
• Expiry date: Jun 16, 2025

Classification

• Technology area (CPC G): Physics
• CPC primary: G01T1/2019
• WIPO field: Environmental technology
• WIPO sector: Chemistry

Abstract

The invention relates to an X-ray detector with detector elements (1) arranged in a layer. The detector elements (1) contain a scintillator element (2) for the conversion of X-rays (X) into photons (v), a photodiode (5) for detection of the photons (v), and a processing circuit (4) for the processing of electric signals generated by the photodiode (5). In order to protect the electronics (4) from X-rays a shielding (3) of variable effective thickness (d1, d2) is disposed in front of the electronics (4). This shielding (3) can in particular be L-shaped. By reduction of the effective thickness of the shielding (3) to a necessary minimum the volume of the scintillator unit (2) can be maximized.