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A full-angle coincidence pet detection method

A detection method and full-angle technology, applied in the field of PET detection, can solve the problems of capturing, lengthening the length/depth of the detector ring, and not clearly raising the sensitivity defect, etc., to achieve the effect of good effect and ensure the success rate

Active Publication Date: 2021-06-01
SHANDONG MADIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The first purpose of the present invention is to solve the problem in the prior art that a large amount of LOR is lost during capture, and it is impossible to capture almost completely at one time to generate a full-body image with high sensitivity at one time. For this situation where there is no effective solution, the A complete PET detection method, under this device, can make up for the problem of blindly lengthening the length / depth of the detector ring but still not being able to obtain credible whole-body images at one time. This problem-solving method is in the existing The technology has not yet appeared, and even the prior art has not explicitly addressed the problem of the existing sensitivity defect

Method used

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  • A full-angle coincidence pet detection method
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  • A full-angle coincidence pet detection method

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specific Embodiment approach

[0036] A kind of full-angle PET detection method is characterized in that: 1) detection cavity assembly step: a plurality of PET detection modules are adjacent to form an integrally closed detection cavity, and each PET detection module is composed of a PET detection crystal and a photoelectric sensor Composed of an array and a light guide, the PET detection crystals are all arranged in the direction of the cavity; 2) Put the detection object into the step: open the detection cavity by opening one end of the detection cavity or open up and down or separate the left and right, and put the detection object; 3) Acquire the image Steps: close the detection cavity, perform PET detection while maintaining the overall closed state, and obtain the whole static image or the whole dynamic image of the detection object in the detection cavity at one time.

[0037] An overall closed detection cavity is formed by the plurality of PET detection modules adjacent to each other, and the PET det...

Embodiment 1

[0041] As mentioned above, the full angle conforms to the PET detection method: when the overall closed detection chamber is in a cylindrical shape, it is composed of a barrel part in the middle and two flat end caps at both ends; the barrel part is composed of several detection module rings Closely arranged to form a cylinder, each detection module ring is composed of a certain number of detection modules arranged in a circle in a crystal-inward manner; the flat end cover is composed of a certain number of detection modules arranged in parallel in a crystal-inward manner. Disc-shaped, the size of the inner surface of the approximately circular planar end cap formed by it is larger than the circular opening of the aforementioned barrel portion. When the overall closed detection chamber is in a cylindrical shape, the barrel in the middle is placed in a state where the axis is horizontal, and there is a casing outside the detection chamber. The two flat end cover shells are conn...

Embodiment 2

[0044] When the overall closed detection cavity is in the form of a capsule, it is composed of a barrel part in the middle and two concave curved end covers at both ends; A certain number of detection modules are arranged in a circle in a circular manner in a crystal-inward manner; the concave curved surface end cover is arranged in a curved surface radian in a manner in which a certain number of detection modules point inward with crystals, and the formed inward The end cap with a concave curved surface, the cross section perpendicular to the axis of the barrel part, is larger than the circular opening of the barrel part. When the overall closed detection cavity is in the form of a capsule, the barrel in the middle is placed in a state where the axis is horizontal, and the detection cavity has a shell outside, which consists of a barrel shell on the outer surface of the barrel and two concave curved end covers. The two concave curved end cover shells are connected with the ba...

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Abstract

The present invention provides a kind of full-angle PET detection method, which is characterized in that it comprises the following steps: 1) detection cavity assembly step: a plurality of PET detection modules are adjacent to form an integrally closed detection cavity; 2) the detection object step : Open the detection cavity by opening one end of the detection cavity or opening up and down or separating the left and right, and put the detection object into it; 3) Obtaining the image step: closing the detection cavity, performing PET detection while keeping the whole closed state, and acquiring the inside of the detection cavity at one time An overall static image or an overall dynamic image of the detection object. The cross-sectional area of ​​all the gaps in the closed state of the detection cavity is smaller than the area of ​​the smallest one of the aforementioned PET detection crystals; the overall closed detection cavity is in the shape of a cylinder, a capsule, an ellipsoid, or a regular polygon.

Description

technical field [0001] The present invention relates to the technical field of PET detection methods, in particular to a PET detection method for obtaining credible whole-body dynamic images at one time, which has not appeared in the prior art, and a PET detection method for full-angle compliance. Background technique [0002] Positron Emission Tomography (hereinafter referred to as PET) equipment is widely used in specific imaging of animals and human bodies (hereinafter referred to as scanning objects). In PET imaging, it is necessary to inject a positron nuclide-labeled tracer into the scanning object first, and then image the distribution of the tracer in the scanning object. The imaging of the tracer-labeled part has strong specificity and can be dynamically Imaging, highly recognizable. [0003] PET adopts the data collection method of coincidence detection. When two exactly opposite detector crystals detect 511keV gamma rays at the same time, it is called a real coin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B6/03A61B6/04G06T11/00
Inventor 刘继国
Owner SHANDONG MADIC TECH CO LTD
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