Alignment adjustment and separation device and alignment method of a multi-modal imaging system

Abstract

The invention discloses an aligning adjustment and separation apparatus of a multimodal imaging system. The aligning adjustment and separation apparatus comprises a target holder indicating the axle center of a PET frame and a main support mechanism for installing and fixing the target holder or the PET frame; the height of the target center of the target holder is the same as the height of the target center of the PET frame, and the target holder and the PET frame are installed at the same position; the main support mechanism comprises an adjusting base whose height is adjustable, a mobile platform which is disposed on the adjusting base and can axially move back and forth and a frame base plate which is disposed on the mobile platform for installing and fixing the target holder or the PET frame, the adjusting base and other imaging systems are coaxially arranged, and the target holder moves back and forth along with the mobile platform so as to adjust the height of the adjusting base and enable the target center of the target holder to be superposed with the central axes of other imaging systems when the target holder is fixed on the frame base plate; and the PET frame is installed on the main support mechanism after adjustment so as to be aligned with or axially away from or close to other imaging systems. The apparatus provided by the invention is simple in structure and convenient to operate and can effectively meet the requirement for center coaxiality of a PET detector and other imaging systems.

Description

technical field [0001] The invention relates to the technical field of medical devices, and relates to medical imaging equipment, especially a multimodal imaging system. Background technique [0002] Multi-modal imaging systems can be used for scanning in multiple modalities, such as Positron Emission Tomography (PET), Single Positron Emission Tomography (SPECT), Nuclear Resonance Imaging (MRI), Computed Tomography Scanning (Computed Tomography, CT), etc. [0003] In a multimodal system (also known as a polymorphic system), some of the same hardware is used to complete different scans. For example, PET-CT is an organic combination of PET and CT, using the same examination table and the same image processing workstation. Due to the inherent coincidence with CT images, PET images and CT images are reconstructed and fused to form a PET-CT fusion image, which can reflect the pathophysiological changes and morphological structure of the lesion at the same time, achieving complem...

AI Technical Summary

Problems solved by technology

[0004] The above inherent coincidence is based on the assumption that the coordinate systems of different imaging systems, such as PET and CT equipment, are aligned. If the coordinate systems of different imaging systems are not aligned, it may directly lead to image misregistration, which cannot be prepared. Subsequent steps such as image reconstruction cannot provide accurate image information

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