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Positron emission computer tomography detector device

A technology of positron emission and tomography, which is applied in radiation detection devices, instruments for radiological diagnosis, diagnosis, etc., can solve problems such as inaccurate detection of photon receiving time and attenuation of high-frequency parts

Active Publication Date: 2018-07-20
SHENYANG INTELLIGENT NEUCLEAR MEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The silicon photomultiplier includes a SiPM sensor array (SiPM sensor array) composed of multiple SiPM sensors. These SiPM sensors are coupled with the scintillation crystal. Because the high-frequency part of the pulse signal collected in this way is seriously attenuated, and the detection time needs exactly the high-frequency part of the pulse signal, it will lead to inaccurate photon receiving time detection

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  • Positron emission computer tomography detector device
  • Positron emission computer tomography detector device
  • Positron emission computer tomography detector device

Examples

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Embodiment 1

[0066] The positron emission computed tomography detector device provided in this embodiment may include: a silicon semiconductor detection array, and the silicon semiconductor detection array may include a plurality of silicon semiconductor detection units. Wherein, each cathode of the plurality of silicon semiconductor detection units can be connected to a power supply; each anode of the plurality of silicon semiconductor detection units can be respectively used as a first signal output terminal and connected to a corresponding time detection circuit, and the time detection circuit It can be used to detect the receiving time of photons, and the number of the time detection circuit is more than one and less than or equal to the number of the first signal output terminals.

[0067] It should be noted that the silicon semiconductor detection array can be coupled with the scintillation crystal array, for example, the silicon semiconductor detection array can be coupled with the s...

Embodiment 2

[0083] This embodiment provides a positron emission computed tomography detector device. Based on the device embodiment 1, each first signal output terminal of a plurality of silicon semiconductor detection units can also be connected to a one-to-one corresponding crystal position identification circuit, The crystal position identification circuit can be used to identify the position of a scintillation crystal hit by a gamma photon.

[0084] Next, continue to take the silicon semiconductor detection unit S11 in the first embodiment of the device as an example to introduce the working principle of the crystal position identification circuit.

[0085] The first signal output terminal of the silicon semiconductor detection unit S11 may also be connected to its one-to-one corresponding crystal position identification circuit. When the scintillation crystal corresponding to the silicon semiconductor detection unit S11 is hit by a gamma photon, the scintillation crystal can convert ...

Embodiment 3

[0094] In order to obtain the energy of the signal output by the first signal output end of the silicon semiconductor detection unit, this embodiment provides a positron emission computed tomography detector device, based on the first embodiment of the device, a plurality of silicon semiconductor detection units Each of the first signal output terminals of each can also be connected with a first energy acquisition circuit, and the first energy acquisition circuit can be used to acquire the energy of the signal output by the first signal output terminal, and the number of the first energy acquisition circuits is less than or equal to the number of the first signal output terminals.

[0095] Next, continue to take the 1×n silicon semiconductor detection array in the first embodiment of the device as an example to introduce the working principle of the first energy harvesting circuit.

[0096] see Figure 6 , in this figure, there may be p first energy harvesting circuits, inclu...

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Abstract

The embodiment of the invention discloses a positron emission computer tomography detector device. The device comprises a silicon semiconductor detection array, wherein the silicon semiconductor detection array comprises a plurality of silicon semiconductor detection units; the cathodes of the plurality of silicon semiconductor detection units are connected with a power supply; the anodes or the cathodes of the plurality of silicon semiconductor detection units are taken as first signal output ends which are connected with corresponding time detection circuits; the number of the time detectioncircuits is more than 1 and is smaller than or equal to the number of the first signal output ends, by reducing the number of the silicon semiconductor detection units connected to the same time detection circuit, the capacitance effect of the silicon semiconductor detection units for collecting pulse signals is weakened, thus the attenuation degree of the high-frequency part in the pulse signalsis reduced, and the detection accuracy for gamma photon receiving time is improved.

Description

technical field [0001] The present application relates to the field of nuclear detectors, in particular to a positron emission computed tomography detector device. Background technique [0002] This section is intended to provide a background or context for implementations of the invention that are recited in the claims. The descriptions herein are not admitted to be prior art by inclusion in this section. [0003] Positron Emission Computed Tomography (PET) is one of the most advanced medical diagnostic equipment at present. Its principle is to inject isotope-labeled drugs that can release positrons in the human body into the human body, such as carbon, One or two isotopes of fluorine, oxygen and nitrogen. These drugs have an annihilation effect when participating in the physiological metabolism of the human body, generating two gamma (γ) photons with the same energy and opposite directions of motion. [0004] With the difference in the ability of different parts of the h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/00
CPCA61B6/42
Inventor 王希吴国城赵健梁国栋
Owner SHENYANG INTELLIGENT NEUCLEAR MEDICAL TECH CO LTD
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