High-resolution two-dimensional grating collimator manufacturing system

Abstract

The invention relates to a high-resolution two-dimensional grating collimator manufacturing system. The high-resolution two-dimensional grating collimator manufacturing system comprises a control system, a multi-process parameter packet linkage module, a multi-process parameter packet, an intelligent feeding module, a 3D printing module and a cooling system. The control system is a closed-loop feedback system and monitors manufacturing parameters in real time through an induction device; the multi-process parameter packet linkage module is used for controlling the mechanical property and the dimensional precision of a product; the multi-process parameter packet is used for setting different process parameters for different positions of parts, and the intelligent feeding module is used for controlling feeding parameters and improving the utilization rate of raw materials in part machining; the 3D printing module carries out part printing production in a layer-by-layer powder laying mode and controls the feature size and the high density of a part; and the cooling system can cool a finished product processed by the 3D printing module, and a novel two-dimensional grating collimator which is researched, developed and produced through a 3D printing technology improves the CT imaging definition and reduces the harmful radiation quantity.

Description

technical field [0001] The invention relates to a collimator manufacturing system, in particular to a high-resolution two-dimensional grating collimator manufacturing system. Background technique [0002] Medical imaging refers to the application of various physical signals including visible light, X-rays, ultrasound, and strong magnetic field excitation to the human body for the purpose of diagnosis or treatment guidance, recording the signal intensity distribution of human body feedback, forming an image, and allowing doctors to interpret the human body from it. Technical means of structure and lesion information. According to the "2019 China Medical Device Blue Book" issued by the Medical Device Research Institute: Benefiting from the development of the economic level and the increasing demand for health, China's medical device market has ushered in a huge opportunity for development. The equipment market size is about 530.4 billion yuan, of which the medical imaging mar...

AI Technical Summary

Problems solved by technology

[0006] Grating collimator is the core component of high-end high-definition imaging and low radiation dose medical CT machine, the production efficiency and filtering efficiency of traditional collimator are low

[0007] When medical CT equipment is working, the X-ray generator (ball tube) will generate a large amount of X-rays. After the X-rays pass through the human body, some scattered X-rays will become clutter and interference signals, which will affect the imaging quality of medical CT. Then cause medical accidents such as misdiagnosis, and excessive X-ray radiation has obvious harmful effects on the human body, which requires a collimator to filter out scattered X-rays

[0008] Traditional collimators have low production and filtration efficiencies

Refractory metals have a high melting point and high hardness, which makes them difficult to cast and machine. They can only be used in parts with simple shapes, such as tungsten wire, single-piece tungsten thin-walled, etc.

The production of traditional collimators can only be realized by manually clamping dozens of 0.1mm thick tungsten sheets on the tooling. The thin wall is easy to deform during the clamping process, and the yield rate is low.

And because the sheets are parallel to each other, it is impossible to filter the X-ray clutter parallel to this direction, so that the image quality cannot be further improved. Only the thin tungsten walls that are perpendicular to each other can filter out the X-ray clutter in all directions

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