Method for correcting detector data of an X-ray detector and X-ray recording system

US8915647B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Steffen Kappler · Effeltrich, DE
• Johannes Kippes · Koblenzer Straße, DE
• Edgar Kraft · Erlangen, DE
• Daniel Niederlöhner · Erlangen, DE
• Thomas Reichel · Heroldsbach, DE
• Christian Schröter · Bamberg, DE
• Thomas Von Der Haar · Nuremberg, DE

Key dates

• Filing date: Mar 22, 2012
• Grant date: Dec 23, 2014
• Expiry date: Oct 29, 2032

Classification

• Technology area (CPC G): Physics
• CPC primary: G01T7/005
• WIPO field: Environmental technology
• WIPO sector: Chemistry

Abstract

In a method, with a current measurement, the history of the radiation exposure of the X-ray detector is taken into account with respect to the overall X-ray detector or subareas of the X-ray detector, in respect of a reduction in the measurement sensitivity produced as a result and a recovery of the reduction in the measurement sensitivity, and the determined measuring signal is corrected with a correction factor which is dependent on the history of the radiation exposure. Furthermore, an X-ray recording system includes a detector which includes a plurality of detector elements, which are read out in groups channel by channel and a read-out apparatus with computer-assisted device for correcting read-out detector data prior to a further processing of the detector data to form projective or tomographic images.