115 results about "Fallout exposure" patented technology

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.

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 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 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.

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.

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 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.

An information processing apparatus according to an embodiment of the present disclosure includes at least one memory storing instructions; and at least one processor that, upon execution of the instructions, is configured to operate as: an acquisition unit configured to acquire imaging order information and an optical image related to radiographic imaging, an identification unit configured to identify a radiation exposure field using the imaging order information and the optical image, a detection unit configured to detect a human body part in the optical image, and an analysis unit configured to, when a plurality of human body parts is detected in the optical image, analyze a human body part closest to the radiation exposure field using the optical image.

The present invention relates to a system for predicting and managing radiation dose and, more specifically, to a system for predicting and managing radiation dose, wherein a simulation can be implemented in advance by modeling a work site and a worker and reflecting the work site and the worker in a scenario so that the radiation dose of the worker during radiation work in a nuclear power plant can be predicted before the work is begun.

To enable the acquisition of information regarding pleural adhesions easily and accurately with low radiation exposure. [Solution] According to the control unit of the diagnostic console, a dynamic image of the chest obtained by dynamic radiography is acquired, and information regarding pleural adhesion is generated based on the amount of movement of the region in the lung area that includes at least the region adjacent to the rib cage in the acquired dynamic image, and the generated information regarding pleural adhesion is displayed and output by the display unit.

The utility model relates to a pulmonary nodule body surface positioning device which comprises a fixing plate, a vertical positioning mechanism and an angle positioning mechanism. The vertical positioning mechanism comprises a measuring plate which is vertically arranged on the fixing plate and a horizontal laser which is arranged on the measuring plate and can reciprocate along the height direction of the measuring plate, and the horizontal laser is matched with the measuring plate to vertically position the body surface of the pulmonary nodule. The angle positioning mechanism comprises an angle laser instrument which is arranged on the measuring plate and can rotate along the plane of the measuring plate and a protractor arranged on the measuring plate, and the angle laser instrument and the protractor are matched to perform pulmonary nodule body surface angle positioning. The puncture path is planned through preoperative CT, the intercostal position of the body surface puncture point is positioned by utilizing the vertical positioning mechanism, and the puncture point is finally marked on the body surface by matching with the angle positioning mechanism, so that the positioning step is simplified, the positioning time and the preoperative waiting time are saved, and radiation exposure caused by multiple times of CT is reduced.

To provide a radiopharmaceutical combination agent capable of reducing the dose of a radiopharmaceutical and reducing the exposure dose of a patient by delaying the discharge rate of radioactive atoms from blood to urine.SOLUTION: A radiopharmaceutical combination comprising a hydroxypropylated cyclodextrin, wherein the radiopharmaceutical combination is for intravenous administration.SELECTED DRAWING: Figure 1

An arterial perfusion device for radiation intervention relates to the technical field of medical instruments and comprises a mounting seat, the mounting seat is a rubber seat, the inner side face of the mounting seat is of an arc-shaped structure, a winding drum is fixed to the end of the mounting seat, a guide roller is rotatably connected to an opening of the winding drum, and a winding mechanism is mounted on the inner side of the winding drum. According to the arterial perfusion device for radiation intervention, the situation that blood circulation is affected by too tight constraint or limbs move due to too loose constraint can be avoided, the comfort level and safety of patient treatment are improved, the perfusion angle can be adjusted, wireless remote operation can be achieved, and the arterial perfusion device for radiation intervention is convenient to use. The radiation exposure time of an operator is shortened, the optimal infusion angle can be found, the treatment effect is improved, damage to the infusion tube caused by a traditional fixing mode can be avoided, meanwhile, displacement of the infusion tube is prevented, and accurate conveying of medicine is guaranteed.

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 relates to the technical field of biological medicine, in particular to application of nobiletin in prevention and treatment of ionizing radiation damage. The nobiletin provided by the invention is extracted from plants, is of a natural flavonoid structure, has high compatibility with endogenous metabolites of a human body, and has good biocompatibility. Animal experiments prove that when the medicine is administrated at the optimal effective dose (200mg / kg) and 12 hours before irradiation, no obvious toxic reaction is shown, the immunogenicity is low, the medicine is suitable for long-term or conventional radiation protection application, the common problems of adverse reaction and accumulated toxicity in synthesis of protective medicines are solved, and meanwhile, the medicine can be in the optimal action state when being exposed to radiation, so that the medicine can be applied to radiation protection for a long time. The survival time of irradiated mice is remarkably prolonged, acute radiation injury pathological symptoms such as intestinal edema and villus shortening are effectively improved, intestinal crypt regeneration and stem cell proliferation are promoted, and reliable radiation protection efficiency is shown.

This invention discloses a biomarker composition, product, and application for lung cancer detection or diagnosis, relating to the field of lung cancer diagnostic technology. The biomarker composition provided by this invention has the advantages of high specificity and high sensitivity; 100% specificity means a zero false positive rate, avoiding unnecessary anxiety, unnecessary radiation exposure, and further invasive examinations. Based on the lung cancer detection or diagnostic biomarker composition provided by this invention, lung cancer diagnostic products, such as reagents, kits, chips, hybridization probes, or sequencing libraries, can be further developed. This will help achieve rapid, highly sensitive, and highly specific detection or diagnosis of lung cancer.

The invention relates to a computer-implemented method (M1) for the more accurate provision of 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 parameter (14) associated with the setting data (10); - Receiving data from the setting data (10) associated with an intensity distribution (15) of the radiation (6) at a radiation detector (3) of the imaging system (1); - Applying a trained first function (11) to the setting data (10), the load parameter (14) and the intensity distribution data (15) as first input data of the trained first function (11), whereby the load distribution data (16) are generated as first output data of the trained first function (11); - Providing the load distribution data (16); wherein the intensity distribution data (15) are provided by applying a trained second function (12) to the setting data (10) as the second input data of the trained second function (12), generating the intensity distribution data (15) as the second output data of the trained second function (12). The invention further relates to a data processing device (2), a computer-implemented training method (M2), and an imaging system (1).

In one aspect, the invention provides a method for wound healing. The method comprises exposing the wound to a first electromagnetic radiation, and then exposing the wound to a second electromagnetic radiation. The order of exposure may be reversed, or the exposure can be done simultaneously. The power of the first electromagnetic radiation is such that it achieves penetration to the deeper layers of the wound, all the way to the wound bed. Useful power range in the invention is about 1 Watts to about 1000 Watts, and an energy density for a given treatment session ranges from about 1 mJ / cm2 to about 1000 J / cm2. The invention also provides a device for wound healing that comprises a first and a second electromagnetic radiation source. The method and device of the invention may involve use of a third and / or more electromagnetic radiation also.

The present invention relates to a heat transfer expansion plate processing and extraction system, and more specifically, by removing and extracting a heat transfer expansion plate installed inside the piping of the Reactor Coolant System (RCS) on the primary side of a nuclear power plant, the heat transfer expansion plate can be removed by remotely operating an electrical discharge machining (EDM) device and a gripper device installed on the equipment after installing equipment inside the reactor; by processing the heat transfer expansion plate remotely in a high-radiation zone, radiation exposure to workers can be reduced; by precisely processing the heat transfer expansion plate using an EDM device, damage inside the reactor can be prevented; by processing cutting grooves and cutting holes using an EDM device, processing time can be shortened and foreign materials generated during cutting can be minimized; by processing a gripper hole inside the heat transfer expansion plate and inserting a gripper, the heat transfer expansion plate can be stably grasped and pulled; and by processing the position of the gripper hole in the heat transfer expansion plate at a desired location, It has the effect of being able to adjust the gripper shape and overall size of the extraction device.

This application relates to the field of medical device technology and discloses a method for multi-mode communication adaptive switching and remote control of a high-pressure injector. The system includes a master controller and a slave controller. The master controller is directly connected to the injector head and maintains a first hierarchical state machine. The slave controller maintains a corresponding second hierarchical state machine and only receives state synchronization data sent by the master controller. The method is executed by the master controller, including initializing its own and the slave controller's hierarchical state machines, acquiring state change data from the first hierarchical state machine and sending it unidirectionally to the slave controller. When communication is interrupted, it continues to operate independently and stores state change data. After communication is restored, the stored data is resent according to a preset priority order. When local manual operation is detected, the physical operation is performed first, and then the latest state is synchronized. This method can avoid misoperation caused by asynchrony between the master and slave devices, improve the reliability of remote control of the high-pressure injector, and reduce the operator's occupational radiation exposure risk.

The invention provides a multi-stage treatment tank for radioactive sewage of a chemical plant, which belongs to the technical field of sewage treatment and comprises a pre-sedimentation regulation tank, a first-stage chelation tank, a second-stage adsorption interception tank, a third-stage deep purification tank and a terminal detection tank which are communicated in sequence. The preliminary sedimentation tank is provided with a rotary mud scraping and pH adjusting assembly; an S-shaped baffling channel and a vortex stirrer are arranged in the primary tank, and a chelating agent is added; the secondary tank contains water distribution, a modified adsorption filter material and an ultrafiltration membrane; the third-stage tank is provided with an ion exchange resin column; the terminal pool is provided with online detection, and unqualified water automatically flows back. Through a multi-stage series connection process integrating automatic mud scraping and mixing, vortex enhanced chelation, gradient adsorption interception and modular ion exchange, and in cooperation with terminal online detection and intelligent backflow control, efficient deep purification of radioactive sewage of a chemical plant, full-process automatic operation and zero radiation exposure risk of operators are achieved.

The invention discloses a pelvic channel screw positioning system with a digital navigation interface, and belongs to the technical field of medical instruments, the pelvic channel screw positioning system comprises an arc-shaped positioner main body, a guide sleeve slidably connected to an adjusting device through a sliding block and a locking mechanism, and the digital navigation interface is rigidly fixed to the side portion of the guide sleeve. The digital tracing interface is used for installing an optical or electromagnetic space tracing element, and when the guide sleeve slides in the second sliding groove along with the sliding block, the digital tracing interface synchronously collects vector displacement data and converts the vector displacement data into needle passage axis coordinates through a mapping matrix. The problem that repeated X-ray perspective positioning is needed in a traditional pelvic surgery is solved, real-time needle insertion deviation feedback is achieved through a digital interface, the accuracy of screw implantation is remarkably improved, and the risk of radiation exposure of doctors and patients is reduced.