SiPM-based ultrafast camera and imaging method thereof

A camera, ultra-fast technology, applied in the direction of image communication, color TV parts, TV system parts, etc., can solve the labor-intensive verification, maintenance and calibration of cameras, long camera exposure time, and gamma image degradation and other issues, to achieve good anti-magnetic field interference and mechanical shock resistance, reduce the possibility of operating errors or other difficulties, and reduce the effect of personnel

Inactive Publication Date: 2020-04-07
NANCHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In the current technical process, due to the limitations of the spatial resolution of MCP image intensifiers and CCD cameras and other devices and the influence of noise, the obtained gamma images are seriously degraded, and it is difficult to truly

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  • SiPM-based ultrafast camera and imaging method thereof
  • SiPM-based ultrafast camera and imaging method thereof
  • SiPM-based ultrafast camera and imaging method thereof

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[0035] The technical solutions of the present invention will be further described below in conjunction with the drawings and specific implementations.

[0036] Such as figure 1 As shown, the block diagram of the digital SiPM-based ultrafast camera provided by the present invention includes

[0037] Including a crystal detector module 100, a single event processing module 200, and a CCD-type photon counting imaging system module 300;

[0038] The crystal detector module 100 includes a hysteresis comparison circuit 134;

[0039] The crystal detector module 100 is used to detect the change of the gamma photon beam, and perform excitation and photoelectric conversion to output a corresponding level signal (scintillation pulse) to the single event processing module 200, wherein the hysteresis comparison circuit 134 is used to The amplitude of the signal is compared with the preset threshold, and then the level signal of the corresponding threshold is output to the single event processing m...

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Abstract

The invention discloses an SiPM-based ultrafast camera and an imaging method thereof. The invention belongs to the detector and photon imaging field. The ultrafast camera includes a crystal detector module, wherein the crystal detector module comprises a hysteresis comparison circuit used for comparing the amplitude of the forward signal with a preset threshold value, outputting a level signal ofa corresponding threshold value; a single event processing module used for detecting level signals according to high-level time, outputting an exposure start signal, meanwhile, acquiring a standard electric signal (accordant scintillation pulse) data set, carrying out time discrimination and position discrimination to generate coincidence lines, and packaging the coincidence lines into data framesto be sent out; a CCD type photon counting imaging system module used for controlling exposure start, receiving the converted digital signal and the coincidence line, reconstructing a processed image, displaying the processed image on the visual screen, comparing the amplitude of the forward signal with a preset threshold value, and outputting a level signal of the corresponding threshold value,so that the possibility of generating non-optimal imaging is reduced, and the setting time during nuclear imaging is shortened.

Description

technical field [0001] The invention relates to the field of detectors and photon imaging, in particular to a SiPM-based ultrafast camera and an imaging method thereof. Background technique [0002] At present, gamma camera imaging technology and systems play an important role in the research of many aspects of life science or biomedicine (such as genetics, genetics, etc.), especially in precision medicine and targeted diagnosis and treatment. It not only promotes the development of molecular biology and molecular medicine, but also promotes the progress of molecular imaging technology. With the help of molecular probes of pinhole γ-ray imaging, images of genes and metabolism in vivo can be obtained, which has important research significance for the observation and memory of the movement of specific molecules of drugs or cells. [0003] The common single-photon device in the prior art is a Gamma camera (Gamma Camera), which is a two-dimensional imaging device, and its struc...

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Application Information

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IPC IPC(8): H04N5/225H04N5/232H04N5/235
CPCH04N23/53H04N23/54H04N23/55H04N23/80H04N23/631H04N23/745H04N23/73
Inventor 邓贞宙陈冠东
Owner NANCHANG UNIV
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