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1. (WO2018164620) X-RAY DETECTOR SYSTEM BASED ON PHOTON COUNTING

Pub. No.:    WO/2018/164620    International Application No.:    PCT/SE2018/050092
Publication Date: Fri Sep 14 01:59:59 CEST 2018 International Filing Date: Tue Feb 06 00:59:59 CET 2018
IPC: G01T 1/17
A61B 6/00
G01T 1/24
Applicants: PRISMATIC SENSORS AB
Inventors: SVENSSON, Christer
Title: X-RAY DETECTOR SYSTEM BASED ON PHOTON COUNTING
Abstract:
There is provided an x-ray detector system (1) comprising a multitude of detector elements (2), each connected to a respective photon counting channel (4, PCC) for providing at least one photon count output, and a read-out unit (9) connected to the photon counting channels for outputting the photon count outputs. The x-ray detector system (1) is characterized in that each one of at least a subset of the photon counting channels (PCC, 4) comprises at least two photon counting sub-channels (40-1 to 40-M), each photon counting sub-channel providing at least one photon count output and having a shaping filter (6), wherein the shaping filters of the photon counting sub-channels are configured with different shaping times, and wherein the photon counting sub-channels, having shaping filters with different shaping times, are adapted for counting photons of different energy levels. Furthermore, the read-out unit (9) is configured to select, for each photon counting channel (PCC), photon count outputs from the photon counting sub-channels.