Radiotherapy method with 4 pi space angle irradiation and equipment thereof

Abstract

The invention discloses a radiotherapy method with 4 pi space angle irradiation and equipment thereof, and the method comprises the steps: enabling a patient to sit on a treatment chair, and fixing the head, chest and legs of the patient through a fixing device according to the size during positioning; moving the position of the treatment chair to align the positioning line on the patient with the laser line; when the accelerator head rotates at an angle of 0-120 degrees, the rotation angle of the treatment chair ranges from 0 degree to 360 degrees, and the treatment chair rotates to irradiate or an irradiation field is arranged at an interval of an angle; or the accelerator machine head and the treatment chair rotate in a coordinated and combined manner. The equipment comprises the accelerator, the accelerator machine head, the treatment chair and the fixing device, the rotation isocenter of the treatment chair coincides with the rotation isocenter of the accelerator machine head, and the treatment chair is used for fixing, positioning and rotating a patient sitting on the treatment chair; and the treatment chair is fixed on the rotating platform. According to the invention, more irradiation angles are selected for the treatment target region, and the dosage of normal tissues is reduced to a greater extent on the premise of ensuring the dosage of the tumor target region.

Description

technical field [0001] The invention belongs to the field of medical equipment, relates to the field of radiotherapy medical equipment, and more particularly relates to a radiotherapy method and equipment with irradiation at a 4π spatial angle. Background technique [0002] Radiation therapy is the use of radiation, such as γ-rays produced by radioactive isotopes and X-rays, electron beams, proton beams and other particle beams produced by various therapeutic machines or accelerators, to irradiate tumors to inhibit their growth or cause death. A treatment method, also known as radiation therapy. Radiation therapy for cancer patients usually involves the following steps: [0003] The first step is to scan the positioning CT of the patient, and the doctor will delineate the target area and normal tissue according to the positioning CT image and other clinical diagnosis results, and determine the prescription of radiotherapy and the limit of normal tissue. [0004] In the sec...

AI Technical Summary

Problems solved by technology

Such a non-coplanar field can effectively reduce the dose of certain normal tissues (for example, patients with nasopharyngeal carcinoma usually need to add a non-coplanar turntable field to reduce the dose of crystals), but because the angle of the turntable is relatively small , so its modulation degree is not high enough

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