Phosphor read-out device and phosphor read-out process

US7151272B2 · kind B2 · utility

Assignee

• Agfa-Gevaert Healthcare GmbH · DE

Inventors

• Werner Nitsche · Lippstadt, DE
• Michael Weinberger · Brugg, CH
• Ralph Thoma · Augsburg, DE
• Georg Reiser · Baden, AT
• Bernhard Sang · Birkenfeld, DE

Key dates

• Filing date: Sep 16, 2004
• Grant date: Dec 19, 2006
• Expiry date: Apr 15, 2025

Classification

• Technology area (CPC G): Physics
• CPC primary: G01T1/2014
• WIPO field: Environmental technology
• WIPO sector: Chemistry

Abstract

The present invention reduces the influences of electromagnetic fields during reading out of image signals from memory phosphor films. This is done by pre-amplifying the detection signals obtained from a detection device, in particular a CCD array, before further processing, for example by an analog-to-digital converter. An amplification register for electron multiplying can be used for the amplification. In this way individual photon sensitivity can be achieved when reading out X-ray images.