Installation and alignment indicating device and installation and alignment indicating method for PET-CT (positron emission tomography-computed tomography) frameworks

Abstract

The invention provides an installation and alignment indicating device and an installation and alignment indicating method for PET-CT (positron emission tomography-computed tomography) frameworks. The installation and alignment indicating method includes respectively installing a CT (computed tomography) center indicating assembly and a PET(positron emission tomography) center indicating assembly on a CT framework rotary portion and a PET framework; enabling a laser device of the CT center indicating assembly to emit a laser beam to the PET framework, adjusting front and back supporting point positions of the PET frameworks, aligning the laser beam to a first center indicator and a second center indicator of the PET center indicating assembly and aligning a CT rotation center to the center of a PET detector at the moment. The laser beam is used for indicating the CT rotation center. The installation and alignment indicating device and the installation and alignment indicating method have the advantages that the installation and alignment indicating device is simple in structure and convenient to adjust, influence of CT center assembly machining and installation errors can be eliminated, the alignment precision is high, and the requirement on the installation coaxiality of the center of the PET detector and the CT rotation center can be assuredly met.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an indicating device and method for installing and aligning a PET-CT frame. Background technique [0002] Computed Tomography (Computed Tomography, CT) is a combination of computer and X-ray inspection, using the different attenuation coefficients of X-ray transmission by different tissues of the human body, so that the radiation signals received by the detector are different, and reconstruct the tomographic image of the human body. Technology. Positron Emission Tomography (PET) is a technique that uses positron nuclide as a tracer to understand the functional metabolic state of the lesion through the uptake of the tracer at the lesion site, and then diagnose the disease. [0003] PET-CT is an organic combination of PET and CT. Using the same examination table and the same image processing workstation, the PET image and CT image are reconstructed and fused to form a PET-...

AI Technical Summary

Problems solved by technology

In the prior art, the alignment of the two frames is mainly achieved by processing the precise mating surfaces on the PET frame and the CT frame to achieve alignment during installation. This method greatly increases the processing difficulty and manufacturing cost; another alignment method is to install support blocks on the ground and precisely calibrate the height and mutual position of these support blocks to ensure the alignment of the PET frame mounted on the support blocks with the CT frame, but this This calibration method is very complicated and the required calibration tools are expensive

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