CT/MRI (Computed Tomography/Magnetic Resonance Imaging) double-body position fusion device for radiation therapy

Abstract

The invention discloses a CT / MRI double-body position fusion device for a radiation therapy and belongs to the technical field of medical instruments. The CT / MRI double-body position fusion device comprises a four-quadrant scanning plate and a connecting plate, wherein the four-quadrant scanning plate is a square thin plate, slant rods are respectively arranged at two diagonals of the square thin plate, an intersection of the two slant rods serves as the center of the four-quadrant scanning plate, the insides of the slant rods are both provided with cavities and the cavities are communicated, and filled with fillers, two ends of the slant rods are both sealed, the fillers are vegetable oils, and diameter ranges of the slant rods are 3mm-5mm; and the connecting plate is fixedly connected with one side of the top end of a CT or MRI scanning bed. The CT / MRI double-body position fusion device for the radiation therapy has the advantages of convenience, fastness and accuracy in positioning a body, and capabilities of realizing automatic registration and fusion of any location scanned images of CT / MRI transverse and sagittal double body positions, enhancing an accuracy of the CT / MRI image registration and fusion, and is convenient for an accurate design of a radiotherapy plan.

Description

technical field [0001] The invention relates to a CT / MRI dual body position fusion device for radiotherapy, which belongs to the technical field of medical appliances. Background technique [0002] CT / MRI positioning image fusion used in radiotherapy planning system can significantly improve the accuracy of tumor target identification and delineation, but due to the inconsistency of CT / MRI image scanning parameters, it is difficult to grasp the coincidence of patient position, and the images obtained by scanning are often very poor. It is difficult to find a consistent body position, which brings great difficulties and uncertainties to the subsequent image registration and fusion. At present, most of the registration studies based on feature points use approximate body feature points for registration, and the approximate registered images are used for fusion, and the clinical application value of the results will be greatly reduced. In previous studies, almost all anatomica...

AI Technical Summary

Problems solved by technology

However, there is a fatal weakness in relying only on limited in vitro markers, that is, it is difficult to display a certain artificial marker on CT / MRI images, and there is still uncertainty in body position consistency.

Using the basic ring with a plastic positioning plate for positioning can better image in CT image scanning, but when scanning MRI images, since the positioning lines of the basic ring and the plastic positioning plate are all metal, the artifacts are large, and the positioning image Not available

At the same time, because the feature points of the transverse and sagittal scans are not easy to determine, it is still difficult to realize the fusion of the two positions in a single CT or MRI machine, not to mention the automatic registration and matching between any scan images of the CT / MRI dual positions. fusion

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