244 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.

A system of shields designed to provide substantially greater protection, head to toe, against radiation exposure to health care workers in a hospital room during procedures which require real-time imaging. The shields are placed around the patient and the x-ray table and provide protection even when the x-ray tube is moved to various angles around the patient.

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.

Systems, methods, and apparatus are described herein for real-time tracking and monitoring of arrays and bones during a surgical procedure. For example, a tracking array (e.g., a surveillance marker) may be affixed to an implant to be inserted in a patient. The implant may be, for example, a pedicle screw or a cage. Affixing the tracking array to the implant may allow the surgeon to monitor the patient array location without an additional incision and / or a second imaging (e.g., additional patient radiation exposure).

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 discloses a universal medical image auxiliary diagnosis system which comprises an ultra-low radioactivity imaging module which adopts a 3D CycleGAN network as a basic skeleton for PET image reconstruction; the epilepsy focus positioning analysis module is based on a self-adaptive medical image segmentation framework in deep learning; the user interface is used for providing a graphical operation interface and supporting multiple interaction modes so as to meet using habits of different doctors; and the data storage and management module is responsible for storage, backup and management of all medical image data and related information in the system, has data retrieval and query functions, and supports remote access and sharing. According to the universal medical image auxiliary diagnosis system, radiation exposure of a patient can be remarkably reduced, the accuracy and reliability of focus positioning can be improved, and powerful technical support is provided for diagnosis and treatment of nervous system diseases such as epilepsy.

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.

A UE, communicating with a network node by using TDD, determines a downlink / uplink configuration between the UE and the network node, and a maximum uplink duty cycle for candidate uplink transmit beam(s). The UE compares the maximum uplink duty cycle with an uplink duty cycle of the determined downlink / uplink configuration, and provides to the network node information associated with the comparison. The network node receives the information associated with the comparison and determines whether to modify the downlink / uplink configuration between the user equipment and the network node based on the information associated with the comparison. The network node indicates, in response to a determination the downlink / uplink configuration should be modified, a modified downlink / uplink configuration to the user equipment.

To provide a radiation dosimetry method that can obtain a measurement value high in reproducibility of a surface dose or air dose within a measurement object area, while suppressing radiation exposure of a measurement worker.SOLUTION: A radiation dosimetry method comprises: a dose measurement step in which a robot 1 loading a radiation sensor 3a moves within a measurement object area A, and adjusts a height from a ground surface G of the radiation sensor 3a, and a radiation dose at a measurement point P within the measurement object area A is measured by the radiation sensor 3a; a sensor position information acquisition step in which sensor position information on a three-dimensional position of the radiation sensor 3a is acquired that includes information on a height from the ground surface of the radiation sensor 3a at a time of measuring the radiation dose in the dose measurement step; and a measurement value recording step in which information on the measurement value of the radiation dose obtained in the dose measurement step is recorded in association with the sensor position information obtained in the sensor position information acquisition step.SELECTED DRAWING: Figure 1

The standing type CT scanning control method, device and equipment and the medium are applied to a CT scanning system, the CT scanning system comprises a scanning module, a supporting module and a first driving module, and the method comprises the steps that a scanning positioning image of a target object is obtained; determining center position information of the region of interest according to the scanning positioning image; outputting a first control instruction to a first driving module according to a relationship between the central position information of the region of interest and preset central position information of a scanning module, so as to drive a supporting module to move through the first driving module, therefore, the central position information of the region of interest of the target object standing on the supporting module is the same as the preset central position information of the scanning module. It is guaranteed that the interested area of the target object is located in the scanning sector angle range of the scanning module, the accuracy of scanning data collected by the detector is guaranteed, the image quality of the interested area is improved, and the radiation exposure of other areas of the target object is reduced.

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 provides a sensor-enhanced microcatheter positioning system which aims to reduce radiation exposure of a patient and accurately position the tip of a microcatheter in real time. The system comprises a micro catheter, a sensor enhancing guide wire, external measuring equipment, a microcontroller and data processing software. The microcatheter is designed for interventional surgery and used in cooperation with a sensor enhanced guide wire, and an electromagnetic sensor is arranged in the sensor enhanced guide wire to track the position of the sensor enhanced guide wire in a blood vessel. An external measurement device measures linear displacement of the catheter relative to the guidewire based on the rotary encoder. The microcontroller reads measurement data and converts the measurement data into digital information, and the data processing software is realized by adopting MATLAB, converts the data into three-dimensional position information, and displays the three-dimensional position information on a graphical user interface for a doctor to check. The system predicts the guide wire path through an energy minimization algorithm, provides immediate feedback and assists surgical navigation.

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.

A support assembly for use during a medical or surgical procedure. The support assembly includes a base structure and a support structure removably connectable to the support structure through attachment features. In illustrated embodiments, the support structure is attached to the base structure in an upright orientation to form a sideboard or guard and attached to the base structure in a horizontal orientation to form an arm support platform. In illustrated embodiment one or both of the base structure or base board and support structure include attachment features to removably connect a radiation shield for protection against radiation exposure.

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.