Power supply system used for silicon photomultiplier of PET system

A technology of silicon photomultiplier tube and power supply system, applied in the field of electronics, can solve the problems of inability to guarantee the temperature of SIPM detectors, increase system cost and complicated procedures, reduce system accuracy, etc., achieve high resolution, ensure gain, improve The effect of image quality

Pending Publication Date: 2018-12-18
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In the existing PET system, the number of SIPM channels is relatively large, and the number of power supply channels is also large. Moreover, the gain and time resolution of the SiPM array are very sensitive to temperature and power supply voltage, and the temperature during SIPM operation is difficult to maintain. Invariably, the existing solution is to connect an external cooling device to ensure the relative stability of the SIPM array’s operating temperature, but the cooling device cannot guarantee that all SIPM detectors have the same temperature, and this method also increases the cost and complexity of the system. It also increases the system noise and reduces the accuracy of the system

Method used

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  • Power supply system used for silicon photomultiplier of PET system
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  • Power supply system used for silicon photomultiplier of PET system

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Embodiment 1

[0043] The embodiment of this application provides a power supply system for silicon photomultiplier tubes applied to PET systems, please refer to figure 1 , the power supply system of the silicon photomultiplier tube applied to the PET system mainly includes the following modules:

[0044] Data processing module 101, voltage monitoring module 102 (optional module), temperature monitoring module 103, control module 104, pressure supply chip 105;

[0045] The load of the power supply system is a silicon photomultiplier tube SIPM module;

[0046] The data processing module 101 is respectively connected with the voltage monitoring module 102, the temperature monitoring module 103, the control module 104 and the pressure supply chip 105;

[0047] Exemplarily, the data processing module is connected to the pressure supply chip through an integrated circuit bus (Inter-Integrated Circuit, IIC) and a serial peripheral interface (Serial Peripheral Interface, SPI);

[0048] The data p...

Embodiment 2

[0063] In order to more intuitively understand the power supply system of the silicon photomultiplier tube applied to the PET system in this application, the embodiment of this application is an application example, specifically:

[0064] A data processing module 101 , a voltage monitoring module 102 , a temperature monitoring module 103 , a control module 104 , and a pressure supply chip 105 .

[0065] Further, the power supply system further includes: an anti-reverse connection protection unit; the anti-reverse connection protection unit is arranged between the power supply chip and the load.

[0066] see figure 2 , the anti-reverse connection protection unit includes: a DC power supply terminal, a field effect transistor Q3 (eg, IRFR4620), a PNP transistor Q5 (eg, MMBT3904), a TVS diode D4 (eg, SM8S40A), a TVS diode D3, High-speed switching diode D5 (eg, IRFR4620), resistor R40 and resistor R3);

[0067] Exemplarily, the DC power supply terminal may be a 24V DC power sup...

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Abstract

The invention provides a power supply system used for a silicon photomultiplier of a PET system. The power supply system comprises a data processing module, a temperature monitoring module, an operation module and a voltage supply chip. The system is used for providing stable and efficient voltage for the silicon photomultiplier.

Description

technical field [0001] The present application relates to the field of electronic technology, in particular to a power supply system for a silicon photomultiplier tube applied to a PET system. Background technique [0002] Positron Emission Tomography (PET) is a non-invasive imaging device capable of real-time functional imaging of organisms. By detecting the distribution of tracers in organisms, it can quantitatively evaluate the functions, biochemical reactions and The degree of metabolic exuberance plays an important role in the diagnosis and evaluation of diseases such as tumors, cardiovascular, and nervous systems, and can be applied to industries such as biopharmaceuticals. Silicon Photomultiplier Silicon Photomultipliers (abbreviated as SIPM, also known as Multi-Pixel Photon Counter–MPPC) is a new high-sensitivity silicon photodetector device, which is mainly composed of avalanche photodiode arrays working in Geiger mode constitute. In recent years, with the maturit...

Claims

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Application Information

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IPC IPC(8): A61B6/03
CPCA61B6/037
Inventor 吴三杨永峰王晓辉邝忠华任宁桑子儒付鑫
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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