57 results about "Gamma knife" patented technology

The present invention is a method and system for developing a dynamic scheme for Gamma Knife radiosurgery based on the concept of “dose-painting” to take advantage of robotic patient positioning systems on the Gamma Knife C and Perfexion units. The spherical high dose volume created by the Gamma Knife unit will be viewed as a 3D spherical “paintbrush”, and treatment planning is reduced to finding the best route of this “paintbrush” to “paint” a 3D tumor volume. Under the dose-painting concept, Gamma Knife radiosurgery becomes dynamic, where the patient is moving continuously under the robotic positioning system.

The invention relates to a gamma knife collimator. The gamma knife collimator mainly comprises a frame and a number of aperture blades which are stacked in the frame. The inner sides of a number of aperture blades form a center through hole with variable diameter together. The frame comprises a fixed base plate, a fixed cover plate and a number of connection rods which are used for fixedly connecting the fixed base plate and the fixed cover plate, wherein the fixed base plate and the fixed cover plate are arranged in parallel. The fixed base plate and the fixed cover plate are provided with through holes, wherein a ray runs through the through holes. The aperture blades are fixed between the fixed base plate and the fixed cover plate. Each aperture blade is provided with a rotary shaft fixed near the outer circumference of the fixed base plate, and a transmission shaft which is slidably connected with a driving plate. The rotatably movably connected driving plate and a number of chutes which slidably match the transmission shafts are arranged on the outer side of the fixed cover plate. The driving plate positively and reversely rotates. The chutes match the transmission shafts to form synchronous rotation of a number of aperture blades to adjust the size of the center through hole composed of a number of aperture blades. The intensity and size of the gamma ray are controlled. The gamma knife collimator has the advantages of high control accuracy and easy operation, is provided with a shielding tungsten alloy trap, and solves the problem of complex and inaccurate operation of a professional gamma knife surgery.

The invention discloses an insulating and adiabatic gamma knife stereotactic positioning frame head nail. The head nail comprises a titanium tail, an insulating and adiabatic body, and a titanium tip. The insulating and adiabatic body is of a cross structure composed of a disk and a central axis. The insulating and adiabatic body is clamped onto the lower end of the titanium tail and the top end of the titanium tip. The central axis of the insulating and adiabatic body extends into the titanium tail and the titanium tip. The head nail has the characteristics of simple structure, low cost, and good heat insulation effect. An interference fit structure is adopted. The product precision is high. A magnetic wire ring does not form eddy current during treatment. Heat or high temperature is not easy to produce. The problem of heat transfer is solved. The precision of products is improved. Effective guarantee is provided for measurement. Thus, the effect of radiotherapy is improved.

The invention discloses a high-precision combined type gamma knife collimator and a machining method thereof. The high-precision combined type gamma knife collimator comprises an upper positioning ring, a middle ring and a lower positioning ring. The middle ring is composed of multiple segmentation bodies. The multiple segmentation bodies are annularly combined and assembled to the annular middle ring. Each segmentation body of middle ring is provided with multiple collimator holes. The multiple collimator holes are annularly arranged in the middle ring. The upper positioning ring is installed on an upper opening of the middle ring. The lower positioning ring is installed on a lower opening of the middle ring. The middle ring is subjected to three-dimensional segmentation to form segmentation bodies, materials are selected according to the sizes of the segmentation bodies, the surface is roughly machined after heat treatment, fine machining is carried out after flaw detection, a base and the collimator holes are machined, and orderly assembly is carried out; surface rust-proof treatment is carried out after it is detected that the collimator is qualified, and the collimator is put in storage. By the adoption of the scheme of the segmentation bodies, the machining difficulty of the collimator body is lowered, the precision of the collimator parts and the collimator holes is greatly improved, the detection error of the product is reduced, and it is ensured that the requirement for focusing degree is met.

The invention relates to the technical field of radiotherapy target area automatic sketching, and particularly relates to a radiotherapy target area automatic sketching system and method based on deeplearning which are used for solving the problems of high qualification requirements on doctors, time consumption and labor consumption in the radiotherapy target area automatic sketching process. Thesystem comprises a management client, a logic server, a forwarding server and a model server, wherein the management client is used for statistics, query and check of DCM data and management of system users and permissions; the logic server is used for defining interaction logic of main data of the front end; the forwarding server is used for providing a DCM data forwarding service between the sketching system and a gamma knife planning system or a local PACS system; and the model server is used for providing model algorithm service for medical data diagnosis, and the model server can generate an RTSS file containing a sketching result for the case data. According to the invention, the qualification requirements of physicians for learning cost and deployment cost are reduced, and time andlabor are saved.

The present invention is a method and system for developing a dynamic scheme for Gamma Knife radiosurgery based on the concept of “dose-painting” to take advantage of robotic patient positioning systems on the Gamma Knife C and Perfexion units. The spherical high dose volume created by the Gamma Knife unit will be viewed as a 3D spherical “paintbrush”, and treatment planning is reduced to finding the best route of this “paintbrush” to “paint” a 3D tumor volume. Under the dose-painting concept, Gamma Knife radiosurgery becomes dynamic, where the patient is moving continuously under the robotic positioning system.

This invention relates to a technique to enhance the clinical efficiency of radiotherapy and readiosurgery using perturbative beaming and tissue specific radiobiology, comprising, Considering the normal steady beam dose rate, then increasing the temporal stochastic fluctuation of the output intensity of the radiation beam from a medical linear accelerator or cobalt gamma knife beam setup, developing a computer-based methodology by considering the tumor specific radiobiology and magnitude of the tailor made dose rate fluctuation using an embedded system device consisting of requisite hardware and software as described herein.

The invention provides traditional Chinese medicine composition for treating gliomas. The traditional Chinese medicine composition comprises more than twenty Chinese herbal medicines including rhizoma amorphophalli, scorpions, leeches and the like. The traditional Chinese medicine composition performs phagocytosis and elimination functions on gliomas, improves microcirculation of the brain, enhances blood and oxygen metabolism, softens and reduces focuses, is suitable for patients who do not have an operation or have part of the gliomas cut off in an operation, patients suffering from gliomas again after an operation and patients who are subjected to X-knife or gamma-knife radiotherapy and chemotherapy, and especially has a more remarkable curative effect on symptoms such as headaches, nausea and vomiting, tinnitus, numbness of limbs, hyperspasmia, mental disorder, blurred or double vision and the like caused by gliomas.

A Gamma Knife heat treatment apparatus and a Gamma Knife treatment system. The Gamma Knife heat treatment apparatus comprises a radiation source (220) and a source carrier body (230). The radiation source (220) is arranged on the source carrier body (230) and is used for emitting multiple beams of gamma rays capable of focusing geometrically and forming a focus point (210). The Gamma Knife heat treatment apparatus also comprises a CBCT imaging module (310). The CBCT imaging module (310) comprises a CBCT ball pipe (240) and a dynamic planar detector (250). The ball pipe (240) is mounted onto the source carrier body (230). The dynamic planar detector (250) is mounted onto the source carrier body (230) and arranged on a side opposite to the CBCT ball pipe (240). A vertical line of connection between the CBCT ball pipe (240) and the dynamic planar detector (250) either passes through the focus point (210), or is positioned at a set distance away from the focus point (210). The Gamma Knife head treatment apparatus and the Gamma Knife treatment system allow for implantation of high precision positioning of a head tumor by means of the CBCT imaging module (310), and for fractionated treatment of the head tumor at small doses, thus protecting as much as possible normal tissues of a patient.

Photon-based radiosurgery is widely used for treating local and regional tumors. The key to improving the quality of radiosurgery is to increase the dose falloff rate from high dose regions inside the tumor to low dose regions of nearby healthy tissues and structures. Dynamic photon painting (DPP) further increases dose falloff rate by treating a target by moving a beam source along a dynamic trajectory, where the speed, direction and even dose rate of the beam source change constantly during irradiation. DPP creates dose gradient that rivals proton Bragg Peak and outperforms Gamma Knife® radiosurgery.

The invention discloses a reductant power supply device of a gamma knife treatment bed collimator drive shaft, comprising a collimator driver mechanism, wherein the collimator driver mechanism is provided with a drive motor which is connected with two independent power supplies respectively via a driver; the driver is connected with a gamma knife treatment bed control bus; any power supply is connected with a power supply state detection circuit connected with the gamma knife treatment bed control bus; and the control bus is connected with an alarm device. The invention adopts a reductant power supply consisting of two power supplies to supply power for a collimator drive shaft, and the other power supply can continue to supply power for the collimator driver mechanism when any one power supply is in failure. The power supply state detection circuit can detect the states of two power supplies in real time, and when any one power supply is in failure, the control bus alarms. The invention can effectively prevent power failure of the collimator drive shaft in the treatment process, and avoid getting out of control of the gamma rays.

The invention provides a radiation treatment system based on a four-dimensional single-source gamma knife. The system includes a radiation treatment planning system, an intelligent tracking system, athree-dimensional numerical control treatment bed, a robot system, a radiation source auxiliary treatment system, an integrated control system, a three-dimensional double-digital X-ray perspective system, the three-dimensional numerical control treatment bed, the robot system, the intelligent tracking system, the three-dimensional double-digital X-ray perspective system, the radiation source and the auxiliary treatment system are all connected with the integrated control system and the radiation treatment planning system; and the radiation treatment system is used for performing instant focustracking on the 360-degree focusing projection by virtue of a collimation intensity modulated gamma ray beam which is emitted by the radiation source at the arm end of the robot system, so that the focal point obtains several times of the radiation dose of the tissues and organs around the focal point, and the dose outside the focal boundary is reduced by a cliff type, the focal tissue cells generate a radiation biological effect to occur necrosis, and a radiation treatment effect similar to surgical resection is generated.

The inventive alignment frame simplifies the task of attaching a fixation frame to a patient's skull prior to radiotherapy treatments. The frame is adjustably attachable to the fixation frame and is equipped with a bite plate that allows a patient to bite down on the bite plate to immobile the alignment-calibration frame and the attached fixation frame. The positional relationships are adjusted to bring the fixation screws into optimal locations on the patient's skull. Needle calibration assemblies placed into the fixation screw holders include clear needle guides through which a hypodermic needle is inserted to inject anesthetic into the future fixation screw location. The needle calibration assemblies are removed and the optimal length fixation screw is tightened into the anesthetized location. After all the fixation screws are in place, the patient releases the bite plate and the entire alignment-calibration frame is removed from the fixation frame.

The present application relates to a stereotaxic radiation fixation device, which is installed on a Gamma Knife frame and is used to fix animals or petri dishes. The two connecting parts can be fixedly connected with the Gamma Knife frame; the fixing device, the fixing device is provided with multiple, and the plurality of the fixing devices are distributed on the fixing platform, and the plurality of the fixing devices A clamping mechanism is provided at one end close to each other, and the clamping mechanism encloses a clamping space, and the animal or culture dish can be placed in the clamping space to be fixed by a plurality of the clamping mechanisms.

The invention discloses an automatic source converter for a gamma knife and a method thereof. The automatic source converter comprises a radioactive source protection plug shifter and a six-degree-of-freedom mechanical hand (15), wherein the protection plug shifter comprises a supporting plate (3) for supporting a radioactive source protection plug, an X-shaft guide rail (7) and a Y-shaft guide rail (4) which are communicated with each other and form a T-shaped guide rail as well as a traction mechanism (1) used for pressing closely, positioning and firmly being connected with the protection plug and then pulling the protection plug out of a mainframe of the gamma knife through the T-shaped guide rail; and the six-degree-of-freedom mechanical hand (15) is used for taking out and replacing radioactive sources. According to the invention, during shifting, the protection plug can be kept being positioned precisely so as to facilitate reinstallation, the source conversion operation is performed automatically, manual intervention can be performed at will, and the problem of radiation injury caused by manual source conversion is solved.