Multi-leaf collimator testing device for medical accelerator

A multi-leaf collimator and testing device technology, applied in X-ray/γ-ray/particle irradiation therapy, etc., can solve the waste of medical resources and other problems, achieve the effects of reducing radiation damage, facilitating movement and positioning, and protecting normal tissues

Active Publication Date: 2019-05-14
江苏海明医疗器械有限公司
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  • Abstract
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Problems solved by technology

[0003] At present, the calibration of the multi-leaf collimator is to install it on the accelerator to calibrate it. Since the accelerator is the most pr

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  • Multi-leaf collimator testing device for medical accelerator

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Embodiment Construction

[0018] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0019] as attached figure 1 As shown, the present invention provides a multi-leaf collimator testing device for a medical accelerator, the device includes a support mechanism, a mounting plate 5, a rotating shaft 4, a driving mechanism, a ray beam simulation mechanism, an imaging mechanism and a multi-leaf collimator;

[0020] Described support mechanism comprises support 1, bearing seat 3, reducer support 6 and brake caster 2;

[0021] The drive mechanism includes a self-locking reducer 7, a hand wheel 8 and a shaft coupling 9;

[0022] The ray beam simulation mechanism includes a light source bracket 10, a light source azimuth adjustment mechanism 11 and a simulated light source 12;

[0023] The imaging mechanism includes a telescopic strut 13 and an imaging flat panel 14;

[0024] The ray beam simulation mechanism, imaging mechanism and multi-leaf co...

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Abstract

The invention discloses a multi-leaf collimator testing device for a medical accelerator, and belongs to the technical field of radiotherapy instruments. The testing device comprises a supporting mechanism, a mounting plate, a rotating shaft, a driving mechanism, a ray beam simulation mechanism and an imaging mechanism; the mounting plate is movably mounted on the supporting mechanism through therotating shaft and rotates around the axis of the rotating shaft through the driving mechanism connected to the rotating shaft, a multi-leaf collimator and the ray beam simulation mechanism are fixedly mounted on the upper surface of the mounting plate, the imaging mechanism is mounted on the lower surface of the mounting plate, the ray beam simulation mechanism enables the central beam axis of asimulation light source be perpendicular to the mounting plane of the multi-leaf collimator and pass through the central reference point of the multi-leaf collimator, and the imaging mechanism can ensure that the shape and size of simulated images are the same as those of an actually-applied radiation field. The multi-leaf collimator testing device for the medical accelerator achieves calibrationtesting of the multi-leaf collimator by simulating the rotation state of the multi-leaf collimator in normal application.

Description

technical field [0001] The invention belongs to the technical field of radiotherapy equipment, and in particular relates to a test device for a medical accelerator multi-leaf collimator. Background technique [0002] When the accelerator is used to perform precise radiation therapy on tumor patients, when the accelerator gantry rotates to different positions, the projected shape of the tumor is irregular and constantly changing. In order to avoid unnecessary damage to normal tissues, a multi-leaf collimator must be used Following the change of the projection shape of the tumor, a corresponding irradiation field is formed. The multi-leaf collimator realizes the occlusion of normal tissue by combining and overlapping multiple leaves. Since the movement between the leaves is performed mechanically, it is inevitable that there will be a matching error caused by mechanical movement. In order to control the error within To effectively protect the normal tissue of the patient with...

Claims

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Application Information

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IPC IPC(8): A61N5/10
Inventor 沙福泰王小军陈璞王春波吴建兴吴君军李军张西志邓勇柘江
Owner 江苏海明医疗器械有限公司
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