Stereotaxic Radiation Therapy Unit

Abstract

A stereo positioning radiation therapy device comprises: an accelerator (21), an accelerator bracket, an X-axis rotation device (13) for driving the accelerator bracket to rotate about an X-axis and a frame (1), and an adapter disposed on the accelerator bracket. The accelerator (21) is installed above the adapter, and the accelerator bracket and the frame (1) are in a transmission connection through the X-axis rotation device (13), so that the accelerator (21) can perform nodding and looking-upward actions following the accelerator bracket, thereby changing the irradiation angle of a ray emitted by the accelerator (21) with respect to a Z-axis. As a result, the irradiation angle can be adjusted in the three-dimensional space, instead of merely being changed in the two-dimensional plane originally, thereby significantly improving the degree of freedom of adjustment, which provides greater supports for accurate detection and treatment.

Description

technical field [0001] The invention relates to a medical device, in particular to a 4D stereotaxic radiotherapy device used in conjunction with an accelerator therapy instrument. Background technique [0002] When radiotherapy is performed on a tumor (target area), precise positioning of the tumor is required. In the 3D space, the doctor or physicist first scans the patient's CT images in the CT room, and reconstructs a series of CT images into a 3D image through an algorithm. At this time, the 3D coordinates of the tumor in the 3D image can be located. Then the doctor or physicist places the patient in the accelerator room for reset, and precisely coincides the three-dimensional coordinates of the tumor with the treatment isocenter of the accelerator. Finally start treatment. The accelerator of the current radiotherapy equipment can only rotate around the Z axis, and the rays emitted by the accelerator can only be limited to the plane perpendicular to the Z axis, and the...

AI Technical Summary

Problems solved by technology

The accelerator of the current radiotherapy equipment can only rotate around the Z axis, and the rays emitted by the accelerator can only be limited to the plane perpendicular to the Z axis, and the incident angle cannot be freely selected, which brings great constraints to the examination of diseases and directional irradiation treatment

[0003] In view of the above problems, the prior art has proposed a solution, that is, the accelerator is suspended on a slide rail parallel to the Z axis, which can slide back and forth, and the accelerator head can be Swing on the YZ plane, the accelerator rotates with the accelerator bracket in the XY plane, and cooperates with the swing on the YZ plane to realize three-dimensional and multi-angle irradiation. However, because the accelerator is heavy, its suspension and driving structure are very complicated and the cost is high. In addition, the ray is unstable due to the swing of the accelerator, and the transmission system of the accelerator is closely connected with the accelerator, which may also interfere with the treatment system, which increases the difficulty and cost of manufacturing. In addition, the accelerator cannot maintain a corresponding working state with the digital image detection panel during the swing process, so Unable to detect the treatment effect at any time, and carry out further correction and treatment

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