An emission imaging device with a polyhedral cavity structure

Abstract

The invention discloses an emission imaging device with a polyhedral cavity structure. The emission imaging device comprises an upper supporting frame and an upper polyhedral cavity structure that are connected with each other, as well as a lower supporting frame and a lower polyhedral cavity structure that are connected with each other, wherein the upper supporting frame is connected with the lower supporting frame through a connecting rod; the upper polyhedral cavity structure is composed of polygonal modules of a plurality of cavity structures; the outer side surfaces of the polygonal modules are spliced in pairs in sequence to form a hollow polyhedral cavity structure; a hollow part of the polyhedral cavity structure is embedded with a polygonal module; the lower polyhedral cavity structure is also composed of the polygonal modules of the plurality of the cavity structures; each sliding apparatus comprises a sliding block and a guide rail; the sliding blocks are connected with the polygonal modules and slide relative to the guide rails under the driving action of a power mechanism; the guide rails are connected with the lower supporting frame; and springs are arranged between one ends of the guide rails and the polygonal modules or the sliding blocks. The emission imaging device has the advantages of simple structure, convenience and accuracy for detection, high detection resolution and the like, and is suitable for detection of local organs of a human body or small animals.

Description

technical field [0001] The invention belongs to the field of emission imaging systems, and more particularly relates to an emission imaging device with a polyhedron cavity structure. Background technique [0002] Emission imaging equipment has been widely used in scientific experiments and clinical medical diagnosis. Taking positron emission imaging equipment as an example, it uses the phenomenon that the positrons produced by the decay of positron isotopes and the negative electrons in the human body have an annihilation effect, leading to the human body. Inject the compound labeled with positron isotope, adopt the compound detection method, use the detector to detect the gamma photons generated by the annihilation effect, obtain the distribution information of the isotope in the human body, and reconstruct and combine the operation by the computer, so as to obtain the distribution of the labeled compound in the human body 3D tomographic images. [0003] However, the exist...

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Problems solved by technology

[0004] In view of the above defects or improvement needs of the prior art, the present invention provides an emission imaging device, in which the emission imaging device with a polyhedral cavity structure is obtained through the combination and cooperation of a plurality of polygonal modules. The upper part and the lower part are composed of the upper part and the lower part, wherein the lower part leaves a gap for the object to be detected to enter the polyhedron cavity, and the polygonal module in the lower part can move along the diameter of the lower support frame with the cooperation of the sliding device and the power mechanism. Expansion to meet the needs of different sizes of objects to be detected entering the detection area, and solve the problems of insufficient spatial resolution and sensitivity of the equipment caused by the excessive size of the existing equipment for local organ diagnosis and the small solid angle of the coverage space. It is suitable for the detection of local organs of the human body such as human brain imaging or small animals

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