Radiation therapy equipment

Abstract

The invention provide radiation therapy equipment, which comprises a mount base, a therapy bed and a therapy equipment body, wherein the therapy bed and the therapy equipment body are fixedly mounted on the mount base. The therapy equipment body comprises a shield drum, a source drum and a collimator drum component which are sleeved coaxially and capable of rotating relative to each other, wherein the source drum is provided with a detachable radioactive source component, and the collimator drum component is provided with a collimator. Further, radials emitted from the radioactive source component irradiates into the therapy equipment body after being limited by the collimator, and the therapy equipment body surrounds the therapy bed by 360 degrees circumferentially. Rotation and revolution of radials are combined by controlling different matching actions of the radioactive source component with an annular tooth of the radioactive source, so that fixed-point rotary irradiation in any angles and optional rotary arc-discharge irradiation within the range of 360 degrees are realized, focus-skin ratio is increased to the utmost extent, and quality of the focus point is improved.

Description

technical field [0001] The invention relates to a radiotherapy device in a medical device, in particular to a gamma ray radiotherapy device. Background technique [0002] At present, the treatment equipment using gamma rays as the radiation source generally utilizes focused irradiation of gamma rays at the target point of the patient to protect normal tissues and kill lesions. With the continuous advancement of radiotherapy technology, the way of focusing rays has been developed from static focusing to rotating focusing technology. The rotating focus technology is to make the gamma ray continuously rotate around the target point of the patient, so as to increase the focal-to-skin ratio and reduce the average irradiation dose received by normal tissues. There are generally two ways of rotating focusing: one is that the ray rotates along a certain central axis passing through the patient target, and the other is that the ray revolves along a certain central axis passing throu...

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