Plane layout used for replacing large planes, preparation method thereof and SPECT/CT (single photon emission computed tomography/computed tomography) dual-mode biological imaging system

Abstract

The invention relates to a plane layout used for replacing large planes, a preparation method thereof and an SPECT / CT (single photon emission computed tomography / computed tomography) dual-mode biological imaging system using the plane layout as a rotating platform. The plane layout comprises a central datum part and a plurality of cantilevers respectively installed on the central datum part, wherein the central datum part and the cantilevers are respectively provided with installing fitting surfaces fit with each other; a working plane is arranged in front of each cantilever; and the working planes are arranged in a same plane or are respectively arranged in a plurality of planes parallel with each other. The plane layout has extremely high precision, the end face runout of the plane layout with meter-scale radial dimension can not exceed + / -0.002mm and the plane layout has simple production cost, low cost, light weight, high reliability and strong universality, moves stably and is easy to control in start and stop. The corresponding SPECT / CT dual-mode biological imaging system has higher geometric precision, imaging precision and imaging definition.

Description

technical field [0001] The invention relates to a plane configuration that can be used to replace a large plane with a large geometric size and high requirements for geometric accuracy and relative position accuracy, a manufacturing method of the plane configuration, and a SPECT / CT dual-mode bioimaging using it as a rotating platform system. Background technique [0002] Molecular state information can reflect the essence of the disease mechanism. With the advent of molecular imaging in the world, preclinical research on major pathological mechanisms such as tumors and cardiovascular and cerebrovascular diseases, research on the expression of mutated genetic material and related molecular information, and new The discovery of protein molecules and their in vivo characteristics research, the research on the efficacy and side effects of new drugs, and the research on pharmacokinetics have greatly promoted the development of molecular bioimaging technology in the 21st century. ...

AI Technical Summary

Problems solved by technology

[0004] The original design idea of ​​the rotating platform, which is only used for CT or SPECT machines to complete their respective imaging work, is to design the rotating platform as a large circular platform that can carry and drive a set of imaging equipment to rotate synchronously. Each of the several functional components has a certain volume, and a certain distance must be guaranteed between each other during imaging, and there is a very high requirement for relative geometric position accuracy between each other, so that the diameter of the above-mentioned large platform required to arrange these functional components at the same time must be large (usually not less than 1200mm), the geometric accuracy must be very high (2 to 3 microns), and the rigidity must be very good (deformation to the micron level at room temperature), which leads to extremely high precision requirements for this large platform, especially for this large platform. The large plane used to install various functional components on the surface has extremely high straightness (flatness and / or straightness), so extremely high-precision processing equipment and higher processing costs are required, and processing is very difficult, even It is impossible to process such a high-precision large platform with general-purpose equipment

[0005] For the aforementioned dual-mode biological imager, in order to give full play to the advantages of dual-mode imaging technology, it is also necessary to ensure extremely high relative geometric position accuracy between different imaging systems. The rotating platform will cause greater difficulties in its manufacture, and even if the design accuracy can be achieved, it will inevitably lead to unstable accuracy due to its inherent structural characteristics

[0006] In addition, the self-weight of the above-mentioned large circular platform is usually large, and it is difficult to start and stop, which not only easily leads to unstable accuracy, but also has the problems of inconvenient maintenance and replacement, high maintenance costs, and difficulty in adjusting the relative positions of various functional components. , the use is not convenient enough. When there are higher requirements for imaging accuracy, the rotating platform needs to be replaced as a whole, which is not conducive to upgrading and transformation

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