184 results about "Fallout exposure" patented technology

The invention relates to the technical field of nuclear power robots, discloses a nuclear power robot accurate positioning and path planning method, and aims to construct a three-dimensional environment model for a complex and changeable environment in a nuclear power station, and express the environment as a grid map containing environment characteristic information. According to the method, a comprehensive state space is defined, the three-dimensional position, obstacle distribution, radiation intensity and energy state of the nuclear power robot are covered, and real-time updating of dynamic obstacles is considered. The action space defines all possible moving actions of the robot so as to ensure the planning flexibility. By defining a comprehensive cost function, the length of a path, radiation exposure, energy consumption and collision risk are evaluated, and a strategy is formulated with the purpose of minimizing accumulated cost. According to the method, the heuristic search algorithm is combined with the reinforcement learning strategy to carry out path planning, so that the planning precision and adaptability are improved.

An RF infrastructure sentry system includes one or more sensors configured to detect that an object has entered an area of concern proximate to an RF radiation source and an RF mitigation system operatively connected to the one or more sensors. The RF mitigation system includes an electrical input operatively connected to a power supply for the RF radiation source; an electrical output operatively connected to the RF radiation source; a relay disposed on an electrical path between the electrical input and the electrical output and configured to selectively connect or disconnect the electrical input and the electrical output through the electrical path; and a processor operatively connected to the relay and configured, at least in response to detection by the one or more sensors that the object has entered the area of concern, to open the relay to temporarily interrupt power to the RF radiation source.

The invention discloses a stomach tube tail end three-dimensional positioning method based on a high-precision permanent magnet mark and a flexible TMR array. The method comprises the following steps: disinfecting a stomach tube and a permanent magnet marker; the miniaturized permanent magnet marker is firmly installed at the front end of the stomach tube; reserving a mounting position at the front end of the stomach tube, and inserting the stomach tube into the esophagus of a patient through a nasal cavity or an oral cavity until the stomach tube reaches a preset position; flexible TMR sensor arrays in double-sided distribution are arranged in the chest area and the back area of the patient; according to magnetic field data detected by a TMR sensor array, coordinates of a permanent magnet marker in a sensor coordinate system are solved through magnetic dipole modeling and nonlinear optimization, a thoracic coordinate system transformation matrix is established, and three-dimensional position coordinates of the permanent magnet marker in a world coordinate system are determined; a magnetic dipole reverse solution positioning method is adopted, and meanwhile, the zero radiation exposure risk is ensured; spatial registration with an ultrasonic image is supported, and the positioning precision and the anti-interference capability are improved.

An RF infrastructure sentry system includes one or more sensors configured to detect that an object has entered an area of concern proximate to an RF radiation source and an RF mitigation system operatively connected to the one or more sensors, the RF mitigation system including a communication interface operatively connected via a network to an RF signal source, the RF signal source including an application programming interface (API) for controlling a power of, or interrupting, an RF signal produced by the RF signal source, and a processor operatively connected to the communication interface and configured, at least in response to detection by the one or more sensors that the object has entered the area of concern, to send a first command via the communication interface to the API, the first command configured to temporarily reduce or interrupt the RF signal produced by the RF signal source.

The invention relates to the field of medical instruments, in particular to a pace-making surgical robot based on a telescopic rotation and magnetic drive guide sheath tube. By combining the three-dimensional moving mechanical arm and the precise magnetic field control technology, precise control over the catheter and the pace-making wire is achieved. Compared with a traditional operation mode, shaking and instability in the operation process of a doctor can be effectively reduced, and risks such as wire perforation and inaccurate positioning in the catheter delivery process are reduced. In addition, by means of a non-contact operation mode controlled by a magnetic field, wounds to a patient are reduced, and operation precision and safety are improved. Meanwhile, an automatic control system and a non-radiation surgical operation mode are adopted, so that the radiation exposure risk of doctors is reduced, the cognitive burden is relieved, and the surgical efficiency is remarkably improved. The whole operation process is safer and more efficient, and improvement of the treatment effect of the cardiac pacing operation is facilitated.

A radiation safety apparatus for a semiconductor processing system has a safety fence with a support frame and radiation shields defining containment regions associated with load ports of the semiconductor processing system. The containment regions are associated with radioactive sources that emit radioactive radiation, where radiation shields attenuate the radiation to a region external to the containment regions. The radiation shields have access doors movably coupled to the support frame to provide access to the containment regions. Interlocks are provided with the access doors to selectively lock the access doors in a closed position to control the access to the containment regions from the external region through the access doors. A controller controls the interlocks based on a radiation decay associated with each of the radioactive sources and a predetermined safe radiation exposure level.

In emission imaging, one, two, or a few topograms without a full CT scan are used to localize, such as through triangulation, and / or generate an attenuation map, such as based on model fitting. A limited radiation exposure, rather than a longer, larger full CT exposure, is needed to localize and / or provide attenuation correction for emission imaging, such as cardiac SPECT imaging.

The invention relates to the technical field of medical diagnosis, in particular to an in-vitro esophageal cancer detection system, comprising: a data acquisition module for performing data acquisition on a patient through CT scanning; the data processing module is used for carrying out image processing analysis and feature extraction on the CT scanning data acquired in the data acquisition module; the model construction module is used for generating a three-dimensional model of the esophagus and surrounding tissues thereof; the simulation detection module is used for simulating an X-ray barium meal detection process on the three-dimensional model and predicting a barium meal radiography effect in actual examination so as to predict a detection result of the esophageal cancer; and the result verification module is used for formulating an X-ray barium meal detection scheme according to the data extracted from the data processing module, and verifying the prediction result of the simulation detection module through actual X-ray barium meal examination. According to the invention, accurate detection of esophageal cancer is realized, the examination pain and radiation exposure risk of a patient are reduced, and the accuracy and repeatability of detection are also improved.

Apparatus and associated methods relate to dynamically monitoring radiation exposure of sensitive objects. In an illustrative example, a dynamic hazard visualization system may provide real time radiation exposure monitoring for medical personnel in an operation room. A dynamic hazard visualization system (e.g., DHVS), for example, may include a data store comprising a plurality of predetermined radiation intensity models. For example, the DHVS may receive at least one image received from a camera installed in the operation room. Based on the received image and one or more predetermined radiation intensity models, the DHVS may generate an inter-object properties data structure (e.g., IOPD) of the operation room. The DHVS may use the IOPS to generate, in real time, an instantaneous radiation intensity profile based on a dynamic geometry generated based on updated images received from the camera. Various embodiments may advantageously monitor radiation exposure of the medical personnel in real time.

A method of protecting animal tissue particularly skin, from damage caused by radiation exposure, by contacting the tissue with a ketone ester, a method of protecting skin, reducing the deterioration of skin or maintaining or improving the properties of skin by applying topically to the skin a ketone body comprising (R)-3-hydroxybutyrate moieties is disclosed. A ketone body comprising (R)-3-hydroxybutyrate moieties, especially enantiomerically enriched R-1,3-hydroxybutyl-(R)-3-hydroxybutyrate, for such uses is also provided.

The invention belongs to the technical field of radioactive metal isotope ion chromatographic separation, and discloses a medical radioactive isotope purification multichannel ion liquid chromatography system. The system comprises an automatic sample injection system, a parallel sampling and leaching channel, a parallel multi-column chromatographic structure, an online radiation dose monitoring module, a multi-channel tail end detection system, a recycling structure and a central control system. By adopting a full-automatic sample injection and multi-channel parallel chromatography structure, parallel separation, real-time radiation monitoring, multi-mode online detection and closed-loop recovery are realized, and the problems of insufficient nuclear purity, low separation efficiency, low target recovery rate and high radiation exposure of a traditional method are solved.

The invention relates to a spine detection method and device based on a multi-modal image, equipment and a storage medium. Visible light image features and X-ray image spine key point features are obtained through a multi-modal model; calculating a similarity measurement matrix of the two to determine similar pixel points of each X-ray image spine key point on the visible light image, outputting and determining all spine key point prediction coordinates on the visible light image, determining a loss function based on the spine key point prediction coordinates and the corresponding spine key point real coordinates, and determining the loss function according to the loss function. The reverse iteration module is used for carrying out reverse iteration on the spine key point prediction coordinates to obtain an optimized multi-modal model; inputting any marked X-ray image and a to-be-predicted visible light image into the optimized multi-modal model, outputting and calculating a Cobb angle based on the spine key point of the to-be-predicted visible light image; compared with the prior art, the spine key point is determined based on the visible light image, the risk of radiation exposure can be reduced, and the spine detection efficiency is improved.

Provided herein are methods and kits for the rapid testing of biomarkers in human skin that are upregulated within 24 hours, across a range of dosages, to identify patients who have been exposed to radiation.

An RF infrastructure sentry system includes one or more sensors configured to detect that an object has entered an area of concern proximate to an RF radiation source and an RF mitigation system operatively connected to the one or more sensors, the RF mitigation system including a communication interface operatively connected via a network to an RF signal source, the RF signal source including an application programming interface (API) for controlling a power of, or interrupting, an RF signal produced by the RF signal source, and a processor operatively connected to the communication interface and configured, at least in response to detection by the one or more sensors that the object has entered the area of concern, to send a first command via the communication interface to the API, the first command configured to temporarily reduce or interrupt the RF signal produced by the RF signal source.

Methods and kits for mitigating lung injury in a subject treated with a targeted radiation therapy or otherwise exposed to radiation are described. In particular, an effective amount of a thrombopoietin mimetic, such as RWJ-800088 or romiplostim, is used to mitigate the radiation-induced lung injury.

The invention discloses a biomarker for rapidly evaluating the radiation exposure dose of a human body and application of the biomarker. The biomarker is zinc finger matrix protein type protein 3 (ZMAT3). Compared with an existing biological dose estimation method, the method has the advantages of being simple, convenient, rapid, accurate and high in throughput, and is particularly suitable for radiation biological dose estimation of large population samples under nuclear and radiation accidents.

The invention belongs to the technical field of cancer immunotherapy, and particularly relates to iterative radiation-resistant tumor cell debris, a preparation method thereof and an application thereof in tumor resistance. The anti-radiation tumor cells generated by repeated radiation exposure show higher TMB (Tetramethylbenzidine) and induce stronger immunoreaction, so that a personalized vaccine is developed based on the method, and the frozen fragment vaccine is obtained by freeze thawing and inactivation of the radiation-resistant tumor cells. The RR-FDV exhibits enhanced immunogenicity as compared to a conventional radiosensitive counterpart. In the present disclosure, RR-FDV exhibits superior activation of antigen presenting cells, while in vivo, it recruits more dendritic cells to the vaccination site, promotes DC-mediated antigen presentation, and induces stronger antigen-specific T cell toxicity.

The invention relates to a computer-implemented method (M1) for more accurately providing data of a load distribution (16) of a radiation (6) from a radiation source (4) of an imaging system (1), comprising the steps: - receiving setting data (10) of the imaging system (1); - receiving a radiation exposure characteristic (14) associated with the setting data (10); - receiving data of an intensity distribution (15) of the radiation (6) associated with the setting data (10) at a radiation detector (3) of the imaging system (1); - applying a trained first function (11) to the setting data (10), the load characteristic (14) and the intensity distribution data (15) as first input data of the trained first function (11), wherein the load distribution data (16) are generated as first output data of the trained first function (11); - Providing load distribution data (16). The invention further relates to a data processing device (2), a computer-implemented training method (M2), a computer program product (8) and an imaging system (1).

The present invention relates to a pulsed beam control system for treating degenerative brain diseases and, to a technique for precisely controlling irradiation intensity, pulse width, period, irradiation angle and the like of radiation in order to provide patient-customized radiation therapy. More specifically, the present invention includes the system which concentrates radiation at a lesion site and which can minimize radiation exposure to adjacent normal tissue through real-time dose monitoring and distance measurement.

The present invention discloses an X-ray indicator and a preparation method thereof. The preparation method of the X-ray indicator comprises preparing a plurality of scintillator materials, wherein the plurality of scintillator materials have different X-ray radiation luminescence intensities; depositing the plurality of scintillator materials on a substrate to obtain scintillator sheets with different X-ray radiation luminescence intensities; and encapsulating the scintillator sheets to obtain an X-ray indicator. The preparation method of the present invention has the advantages of a simple preparation process, easy operation, batch production, and low cost. The X-ray indicator of the present invention can achieve a visible indication effect of X-ray intensity, can know the radiation intensity in real time, has the advantages of flexible and changeable structural components, easy large-scale preparation, low cost, convenient carrying, simple operation, and strong stability, and is suitable for places with radiation exposure hazards such as X-ray protection and nuclear power plant protection.

The application discloses a real-time path planning method fusing improved locust-dynamic window method, and comprises the following steps: S1, generating an initial path according to an improved A* algorithm, performing global path planning on the path in a radiation environment through an improved locust optimization algorithm, and determining the path from the starting point to the ending point; S2, performing local path planning according to the path through an improved DWA algorithm, and generating a planning path. Through the introduction of a position updating strategy considering radiation distribution information and an improved adaptive comfort zone coefficient, the influence of the radiation risk on path selection is more truly reflected, and the position updating process of the GOA is optimized. This enables the algorithm to effectively guide the locust population to avoid high radiation areas in a nuclear environment, and significantly reduces the radiation exposure risk. Through the combination of the global optimization capability of the improved A* algorithm, the initial population distribution of the locust optimization algorithm is improved, and then the convergence speed of the locust optimization algorithm is improved.

The invention belongs to the technical field of medical apparatus and instruments, and discloses an angle-adjustable carbon fiber support convenient for intraoperative fluoroscopy, the angle-adjustable carbon fiber support convenient for intraoperative fluoroscopy comprises a supporting seat and a placing plate, an adjusting structure is arranged in the supporting seat, and a clamping structure is arranged on one side of the placing plate. By means of the adjusting structure, angle adjustment can be accurate and flexible, and multi-angle adjustment such as normal position 90 degrees and internal rotation 15 degrees can be accurately achieved through cooperation of the gear and the tooth groove in combination with the pointer and the scale groove. No matter the requirements of conventional normal position perspective, internal rotation and external rotation at special angles and the like are met, rapid adaptation can be achieved, image collection in an operation is more accurate, a doctor is assisted to clearly observe structural details such as bones and joints, diagnosis, study and judgment time is shortened, operation efficiency is improved, the supporting base and the placing plate made of crystal carbon fibers are free of perspective blocking, imaging is clear, and the operation efficiency is improved. Image blurring caused by material interference is avoided, repeated perspective operation is reduced, the radiation exposure risk of a patient is reduced, an operation team can obtain effective image information more efficiently, and actual application and operation are facilitated.

The invention provides novel compositions and methods for the treatment of Radiation-Induced Bystander Effects (RIBE), resulting from radiation exposure. In one preferred embodiment the inventions includes novel therapeutic agents, including but not limited to quercetin and quercetin analogs, as well as E64, CA074, CA074Me, that interfere with the activity of Cathepsin B.

The invention discloses a real-time path planning method fusing an improved locust-dynamic window method, and the method comprises the following steps: S1, generating an initial path according to an improved A * algorithm, carrying out the global path planning of a path in a radiation environment through introducing an improved locust optimization algorithm, and determining a path from a starting point to an end point; and S2, performing local path planning according to the path through an improved DWA algorithm, and generating a planned path. By introducing a position updating strategy considering radiation distribution information and an improved adaptive comfort zone coefficient, the influence of radiation risk on path selection is reflected more truly, and the GOA position updating process is optimized. The algorithm can effectively guide the locust population to avoid a high-radiation area in a nuclear environment, and the radiation exposure risk is remarkably reduced. The initial population distribution of the locust optimization algorithm is improved by combining and improving the global optimization capability of the A * algorithm, so that the convergence speed of the locust optimization algorithm is improved.

The utility model discloses an iron ore value analysis device which comprises a grade analyzer which comprises a gun head and a handle, and the gun head is fixed at the upper end of the handle; the first protection assembly comprises first fixing plates, a first connecting shaft, a first torsional spring, a first protection plate and a limiting column, the first fixing plates are fixed to the middle of the lower surface of the gun head and located on the side edge of the top of the handle, the first connecting shaft is fixed between the first fixing plates, and the first torsional spring is connected to the first connecting shaft in a sleeving mode; one end of the limiting column is fixed to the lower end of the side edge of the first protection plate, and the other end of the limiting column is attached to the handle. The utility model relates to an iron ore grade analyzer, and aims to solve the problem that when the iron ore grade analyzer is used, an operator holds a handle, presses a button and starts an X-ray, and the X-ray is a radiation source, so that the risk of radiation exposure to the operator and the surrounding environment is possibly caused if the X-ray is emitted due to misoperation.

Systems and methods for a good x-ray quality with as low a radiation exposure for a patient as possible. The method provides control settings for recording a series of x-ray images by an x-ray device during a flow of contrast agent through a liquid-filled hollow organ of a patient. The method includes the following steps: selecting a frame rate f, which, with respect to the x-ray device used, contributes to at least 90% of the maximum adjustable frame rate, determining a contrast agent infusion rate R for the hollow organ, which generates a fill level of at least 75% in the hollow organ, using a vessel diameter d of the hollow organ and a flow speed v of the liquid of the hollow organ, determining an infusion duration t which represents a contrast agent bolus length as a function of the selected frame rate f, which infusion duration t generates an overlap of at most 25% between two consecutive x-ray images using the selected frame rate f, providing a first control setting in respect of the selected frame rate f for the x-ray device for recording the series of x-ray images and providing a second control setting in respect of the determined contrast agent infusion rate R and the determined infusion duration t.

The application discloses a mechanical arm for installing a radioactive source of a radioactive logging instrument, and relates to the technical field of low-carbon oil exploitation. The mechanical arm comprises a positioning base plate and a mechanical arm body fixed to the positioning base plate. An installation frame is rotationally connected to the mechanical arm body. The installation frame is provided with circumferentially distributed outlets. Part of the outlets are sealed by sealing blocks. The other part of the outlets is threadedly connected with installation rods. The installation rods are slidably connected with connecting rods. The installation frame, the installation rods and the connecting rods are all provided with cavities in communication. The outer ends of part of the connecting rods are provided with slip type grippers. The mechanical arm can automatically complete all processes from loosening a hexagonal nut, opening a can cover, clamping a neutron source, placing the neutron source into a storage body, closing a storage cover and tightening the nut, without manual intervention, frequent replacement or adjustment of tools, so that operation complexity is reduced, work efficiency is remarkably improved, and radiation exposure risk is reduced.

The invention provides a sorting mechanism applied to a sealed seed source, and relates to the technical field of seed source sorting, the sorting mechanism comprises a shielding box body and a control system, the shielding box body is internally provided with a material injection execution module; the container processing module comprises a container bearing assembly, a plurality of independently-isolated container stations are arranged in the circumferential direction of the container bearing assembly, a set of elastic clamps are correspondingly arranged in each container station, and a collecting container is fixed to each set of elastic clamps in a releasable mode; the container supply assembly is used for automatically supplying empty collection containers to empty container stations; the cap screwing assembly comprises a bottle cap conveying guide rail and a cap screwing driving mechanism which is vertically arranged; and the finished product discharging unit is linked with the cap screwing assembly. By integrating the cap screwing assembly, the finished product discharging unit and the container supplying assembly, continuous operation without human intervention in the whole process of subpackaging, cap screwing, bottle arranging and bottle supplementing is achieved, and the risk of radiation exposure caused by opening of a bottle opening in the bottle taking, cap screwing and bottle supplementing processes is thoroughly eliminated.

The present application relates to the technical field of medicine, and discloses application of gastrodin in preparation of medicine for preventing and treating radioactive liver injury, wherein the radioactive liver injury is liver injury caused by ionizing radiation exposure. It is found that the gastrodin can effectively intervene in specific mechanism of the radioactive liver injury, significantly reduce the mortality of the radioactive liver injury mice, reverse the hepatic veno-occlusive disease and the core pathological features of liver fibrosis of the radioactive liver injury, and more specifically treat the radioactive liver injury. On the other hand, the gastrodin can be used before radiation exposure to prevent serious radioactive liver injury after radiation exposure.

An artificial structure for preventing or treating lymphedema and a construction method therefor. The artificial structure includes a first sheet and a second sheet arranged on the first sheet and including at least two channels. Each channel includes an inlet, an outlet, a one-way channel structure configured to maintain a one-way flow of lymph from the inlet toward the outlet, and a pattern on a surface facing the first sheet. The artificial structure is configured to maintain a normal flow of lymph despite the effects of lymphadenectomy and radiation exposure. The artificial structure has the effect of not only preventing the onset of lymphedema but also effectively being useful for treating diseases caused by interruption of lymph flow.