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A photon-counting x-ray detector system having an adaptive Anti-coincidence system

A photon counting and detector technology, applied in the field of x-ray imaging and x-ray detector systems, can solve the problems of counting loss, achieve the effect of smoothing the count rate characteristics and avoiding image artifacts

Active Publication Date: 2019-11-22
PRISMATIC SENSORS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This anti-coincidence logic improves the reconstruction of the incident energy spectrum at low photon fluences, but causes severe count loss at high fluences, above 5 × 10 6 Count / mm 2 ·s

Method used

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  • A photon-counting x-ray detector system having an adaptive Anti-coincidence system
  • A photon-counting x-ray detector system having an adaptive Anti-coincidence system
  • A photon-counting x-ray detector system having an adaptive Anti-coincidence system

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Embodiment Construction

[0046] refer to figure 1 , it may be useful to begin with a brief overview of an illustrative overall x-ray imaging system. In this non-limiting example, an x-ray imaging system 100 basically includes an x-ray source 10 , an x-ray detector system 20 and an associated image processing device 30 . In general, x-ray detector system 20 is configured to record radiation from x-ray source 10 which may have been focused by optional x-ray optics and passed through an object or object or part thereof. The x-ray detector system 20 may be connected to an image processing device 30 via suitable analog processing and readout electronics (which may be integrated in the x-ray detector system 20) for image processing and / or image reconstruction by the image processing means 30 .

[0047] Such as figure 2 As shown in , another example of an x-ray imaging system 100 includes: an x-ray source 10 that emits x-rays; an x-ray detector system 20 that detects x-rays after they pass through an obj...

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PUM

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Abstract

There is provided a photon-counting x-ray detector system (200) comprising a plurality of photon-counting channels (220), and at least one anti-coincidence circuit (230), each of which is connected toleast two of the channels and configured to detect coincident events in the connected channels. The x-ray detector system (200) further comprises an anti-coincidence controller (240) configured to control the operation of said at least one anti-coincidence circuit based on photon count information by gradually adapting the operation of said at least one anti-coincidence circuit with increasing count rates, starting from a threshold count rate.

Description

technical field [0001] The present invention relates generally to x-ray imaging and x-ray detector systems, and more particularly to photon counting x-ray detector systems, anticoincidence systems for photon counting x-ray detector systems, and methods for such anticoincidence systems A controller and a corresponding computer program product. Background technique [0002] Radiographic imaging, such as x-ray imaging, has been used for many years in medical applications and non-destructive testing. [0003] Typically, an x-ray imaging system includes an x-ray source and an x-ray detector system. An x-ray source emits x-rays which pass through the object or object to be imaged and are then recorded by an x-ray detector system. Since some materials absorb a greater portion of the x-rays than others, an image of the object or object is formed. X-ray detectors can be of different types including energy integrating detectors and photon counting detectors. [0004] The performan...

Claims

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Application Information

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IPC IPC(8): G01T1/24A61B6/03G01N23/04G01N23/083G01T1/36
CPCG01T1/17G01T1/172G01T1/247
Inventor 马茨·佩松马茨·丹尼尔松许成
Owner PRISMATIC SENSORS
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