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Photon-counting X-ray energy spectrum detection device and imaging system based on compressed sensing

A detection device and compressed sensing technology, applied in the field of energy spectrum detection, to achieve the effect of accelerating the acquisition speed and avoiding the effect of pulse accumulation

Pending Publication Date: 2017-07-28
NORTHEASTERN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the advantages of photon-counting detectors are increasingly recognized, certain technical challenges still exist for the needs of medical applications

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  • Photon-counting X-ray energy spectrum detection device and imaging system based on compressed sensing
  • Photon-counting X-ray energy spectrum detection device and imaging system based on compressed sensing
  • Photon-counting X-ray energy spectrum detection device and imaging system based on compressed sensing

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Embodiment Construction

[0024] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0025] A photon counting X-ray energy spectrum detection device based on compressive sensing, such as figure 2 Shown, including detector array, amplifier, energy calibrator, single pixel threshold generator, threshold setter, comparator and pulse counter and.

[0026] The detector array is a flat-panel detector composed of 512*512 direct conversion detector pixels, each pixel can detect the attenuated X-ray photons passing through the scanned object, and generate the detected radiation signal. Corresponding amplifiers, energy calibrators, comparators and pulse counters are provided for each pixel channel, and the output terminals of each pixel channel are connected to th...

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Abstract

The invention provides a photon-counting X-ray energy spectrum detection device and imaging system based on compressed sensing and relates to the technical field of energy spectrum detection. The detection device comprises a detector array, an amplifier, an energy calibrator, a single-pixel threshold generator, a threshold setting device, a comparator and a pulse counter. The imaging system comprises a PC, an irradiation X-ray source, a rotary carrier device and the photon-counting X-ray energy spectrum detection device based on compressed sensing. The photon-counting X-ray energy spectrum detection device and imaging system can reconstruct an ideal X-ray energy spectrum, accelerate acquisition speed and meanwhile, can avoid a pulse pile-up effect caused when a photo-counting detector is directly utilized for acquisition, thereby providing possibility for X-ray full energy spectrum acquisition by utilizing the photon counter.

Description

technical field [0001] The invention relates to the technical field of energy spectrum detection, in particular to a photon counting X-ray energy spectrum detection device and an imaging system based on compressed sensing. Background technique [0002] Due to its high resolution and fast scanning speed, CT imaging has become a routine medical equipment and plays an irreplaceable role in the process of clinical diagnosis and treatment. However, there are still many limitations in clinical diagnosis, which cannot meet the needs of clinical diagnosis and treatment and the expectations of doctors. At present, conventional CT has problems such as beam hardening artifacts, high radiation dose, poor ability to distinguish soft tissues, and can only provide morphological information, but cannot provide material and functional information. With the emergence of dual-energy CT, some of the above-mentioned problems have been effectively solved. X-rays have a continuous energy spectru...

Claims

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Application Information

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IPC IPC(8): G01J11/00G01T1/36
CPCG01J11/00G01T1/36
Inventor 孝大宇郭洋刘栋滕月阳李建华李宏康雁
Owner NORTHEASTERN UNIV