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Integral full-angle coincidence brain PET detector and integral equipment

A full-angle, detector technology, applied in the direction of instruments, sensors, measuring devices, etc., can solve the problems of defects, poor packaging of PET detectors, insufficient overall sensitivity, etc., and achieve good results.

Active Publication Date: 2019-06-11
SHANDONG MADIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention is to solve the problems in the prior art that the PET detector for the head / brain is not well packaged and the overall sensitivity is insufficient. The PET detector scheme, under this device, can obtain credible whole-brain PET images at one time through the equipment with the smallest size. This problem-solving method has not yet appeared in the existing technology, and even the existing None of the technologies clearly raised the problem of sensitivity defects as before

Method used

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  • Integral full-angle coincidence brain PET detector and integral equipment
  • Integral full-angle coincidence brain PET detector and integral equipment
  • Integral full-angle coincidence brain PET detector and integral equipment

Examples

Experimental program
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Effect test

Embodiment 1

[0038] An overall full-angle PET detector conforming to the brain is characterized in that it includes a plurality of PET detection modules, each PET detection module is composed of a PET detection crystal, a photoelectric sensor array and a light guide, and the PET detection crystal is directed toward the detection cavity. Arranged in the direction of the cavity; the plurality of PET detection modules are adjacent to form a detection cavity with an opening, the length, width and height of the detection cavity are not greater than 35-50cm, and the opening of the detection cavity is located below the detection cavity The cross-sectional area of ​​the opening is greater than the maximum cross-sectional area of ​​the human head in the horizontal direction; except the aforementioned opening, all the aforementioned plural PET detection modules are non-detachably connected together; All the cross-sectional areas of the voids are less than 1 / 2-1 / 3 of the area of ​​the smallest one of ...

Embodiment 2

[0051] like Figure 6 As shown, in the shape of the detector in this embodiment, a spherical overall structure is formed, which can be pulled over, and only the horizontally cut opening is exposed at the bottom. Of course, horizontal cutting is not required, and the modules at the opening can be uneven. The advantage of this mechanism is that the design is simple, the detection module can be of one size, and the detection mold cover is also very well designed, and all angles are the same, only need to leave an opening at the lower part. The disadvantage is that after the human head enters horizontally, because most of the human head is longer up and down, the diameter of the lateral section is not so large, the horizontal module setting is a bit wasteful, and such a large space is not needed.

Embodiment 3

[0053] like Figure 7 As shown, in the shape of the detector of this embodiment, an ellipsoid with C>a=b is formed, and the head can be pulled over, and only the horizontally cut opening is exposed below. Of course, horizontal cutting is not required, and the modules at the opening can be uneven. The advantage of this mechanism is that the design is simple, the detection module can be 2-3 sizes, the detection mold cover is also very well designed, all angles are the same, and only the lower part needs to be left open. The disadvantage is that after the human head enters horizontally, for the case of insufficient vertical length, the upper module setting is a bit wasteful, and such a large space is not needed.

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Abstract

The invention provides an integral full-angle brain-conforming PET detector. The detector comprises a plurality of detection modules, each detection module consists of a crystal, a sensor array and alight guide, and the detection crystal is arranged towards the interior of the cavity; a plurality of the detection modules form a detection cavity with an opening, the length, the width and the height of the inner cavity of the detection cavity are not more than 35-50cm, and the opening of the detection cavity is positioned below the detection cavity; the sectional area of the opening is larger than the maximum sectional area of the head in the horizontal direction; all the above modules are connected together in a non-detachable mode except for the aforementioned opening; the cross-sectionalarea of all the gap among a plurality of the PET detection modules is 1 / 2 to 1 / 3 smaller than the area of the smallest one of the detection crystals. At least 75-80% of the true coincidence events occurring from the center of the detection cavity are detected by the aforementioned a plurality of PET detection modules. The invention also includes an integral device.

Description

technical field [0001] The present invention relates to the technical field of PET detectors, in particular to a special PET detector with extremely strong wrapping properties and its overall equipment that has not appeared in the prior art, a brain PET detector and its overall full-angle compliance. overall equipment. 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, is one of the most recognizable imaging methods currently. [0003] The general idea of ​​PET equipment is to design it as a detector ring, which can increase th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/03
CPCG01T1/2985A61B6/037A61B6/501A61B6/44A61B2562/046G01T1/2023
Inventor 刘继国
Owner SHANDONG MADIC TECH CO LTD