154 results about "Fallout exposure" patented technology

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.

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.

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 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 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.

The utility model relates to the technical field of medical instruments, in particular to a guide catheter assembly which comprises a plurality of layers of sleeve parts, the sleeve parts are thinned step by step from the first step to the Nth step and are sequentially nested, each sleeve part comprises a catheter body, the near end of each catheter body is provided with an operation handle used for controlling the corresponding sleeve part, and the operation handle is connected with the corresponding sleeve part. The far end of the catheter body is in a bent shape relative to the catheter body, and the far end of the catheter body from the first step to the Nth step has the same or different preset curvatures; and the interventional instrument can penetrate through the Nth-step sleeve piece so as to reach the target far-end blood vessel under the guidance of the multi-layer sleeve piece. According to the scheme, the defects that in the prior art, due to the fact that a guiding catheter is not matched with a pulmonary artery anatomical structure, the operation difficulty is large, time is long, and radiation exposure is large are overcome, and an interventional access is rapidly built in interventional therapy with complex and bent blood vessels.

A method for mitigating RF radiation exposure in an area of concern proximate to an RF radiation source includes operatively connecting one or more sensors to a processor, operatively connecting the processor to a relay disposed on an electrical path between an electrical input and an electrical output, the relay configured to selectively connect or disconnect the electrical input and the electrical output through the electrical path under control of the processor, operatively connecting the electrical input to a power supply for the RF radiation source, operatively connecting the electrical output to the RF radiation source, detecting, via the one or more sensors, that an object has entered the area of concern, and opening the relay, via the processor, to temporarily interrupt power to the RF radiation source at least in response to detection by the one or more sensors that the object has entered the area of concern.

The invention provides a precise navigation method and system for large trochanter bone scale retardation. The method comprises the following steps: acquiring a bone three-dimensional model of a large trochanter and planning information of a retardation screw; carrying out registration on an entity trochanter and the skeleton three-dimensional model in an operation, and mapping planning information of a blocking screw; and tracking and displaying the poses of the screw placement tool and the solid large trochanter in real time so as to navigate the screw placement action of the retardation screw. In the application, accurate screw placement of epiphyseal block is realized by planning the screw placement scheme of epiphyseal block, tracking the screw placement tool and the distal end of the solid femur in real time, so that accurate screw placement is realized without repeated fluoroscopy, and radiation exposure injury is avoided.

A method for mitigating RF radiation exposure includes operatively connecting one or more sensors to a processor, operatively connecting the processor to a variable reducer disposed on an path between an input and an output, the variable reducer configured to reduce power or an RF signal between the input and the output under control of the processor, operatively connecting the input to at least one of a power supply or an RF signal source, operatively connecting the output to the RF radiation source, detecting, via the one or more sensors, that an object has entered an area of concern, and controlling the variable reducer via the processor, at least in response to detection by the one or more sensors that the object has entered the area of concern, to temporarily reduce the power or the RF signal to the RF radiation source.

The application provides a wireless personal electronic dosimeter based on near field communication assisted positioning and a positioning method, and relates to the technical field of electronic dosimeters. A label deployment module acquires a basic layout for visualizing a staff position; a positioning trajectory generation module acquires a staff motion trajectory; a dose monitoring module collects real-time radiation dose data received by the staff; an information display module aligns the staff motion trajectory with the time sequence of the real-time radiation dose data and performs visual display; and a dose warning module is used for judging whether the radiation dose of the environment in which the staff is located exceeds a safe range, and if so, radiation warning is performed. The absolute position calibration of the near field communication physical label solves the floor misjudgment problem of traditional wireless positioning, improves positioning accuracy, realizes visual display of the staff position through label and map fusion display, and realizes fine management and control of radiation exposure through acquisition of position-dose dual information.

The invention discloses a biological index data processing method and device, a storage medium and computer equipment, relates to the technical field of information processing, and mainly aims to improve the determination efficiency and the determination accuracy of radiation response characteristics of a biological index data set. The method comprises the following steps: acquiring a biological index data set of a skin tissue sample in a non-radiation exposure state; determining the degree of influence of each piece of biological index data in the biological index data set on radiation response characteristic prediction, and screening out core biological index data related to radiation response characteristics from the biological index data set based on the degree of influence; and analyzing the core biological index data by using a preset radiation response characteristic prediction model, and determining radiation response characteristics of the biological index data set based on an analysis result. The method is suitable for processing scenes of the biological index data.

The present disclosure relates to a system for monitoring radiation exposure using an eyeball-attachable apparatus for measuring radiation, the system including an apparatus for measuring radiation configured to be attachable to an eyeball of a person under measurement and to measure the amount of radiation exposure while being attached to the eyeball of the person under measurement; and a monitoring apparatus configured to receive measurement information about the amount of radiation exposure from the apparatus for measuring radiation, and to display information about the amount of radiation exposure of the person under measurement, thereby enabling real-time monitoring of the exposure dose according to the radiation exposure of a person under measurement, and further the remarkable reduction of the risk of explosion compared to existing lithium-based batteries, by applying a perovskite-based battery part, as well as smooth supply of power.

The utility model relates to the technical field of nuclear medical instruments, in particular to a self-adhesive breathable nuclide scar repair patch. The self-adhesive breathable nuclide scar repair patch comprises a waterproof layer, an active layer and an adhesion layer, the adhesion layer is connected to one side of the waterproof layer, and the active layer is arranged in the waterproof layer; a first vent hole is formed in the waterproof layer in the thickness direction of the waterproof layer, and the active layer is arranged away from the first vent hole. The nuclide scar repair paste can be fixed on a human body through the adhesion layer, the application is convenient, the application time and difficulty can be reduced, and the risk of radiation exposure of medical staff is avoided. The active layer is arranged in the waterproof layer, and nuclide leakage in the active layer can be prevented. The first vent holes are formed in the waterproof layer, the breathability of the nuclide scar repair patch can be improved through the first vent holes, the comfort level of the patch is improved, and in order to prevent the active layer from leaking through the first vent holes, the active layer is arranged away from the first vent holes.