86 results about "Radiation risk" patented technology

The invention relates to the technical field of medical image processing, in particular to an artificial intelligence assisted intraoperative imaging method, which comprises the following steps: S1, preprocessing a multi-modal medical image, segmenting and recognizing an anatomical structure by a deep learning model according to the preprocessed image, measuring anatomical parameters based on a segmentation and recognition result, and generating an operation planning path by artificial intelligence according to the anatomical parameters; s2, collecting a C-shaped arm perspective image stream in real time, dynamically tracking space coordinates of a surgical instrument, comparing the position of the instrument with a surgical planned path, calculating offset, and when the offset is greater than an offset threshold, outputting correction guidance through an AR superposition layer; and S3, monitoring an image quality index in real time, dynamically adjusting exposure parameters through a reinforcement learning model, and when a metal implant is detected, switching a dual-energy-spectrum mode and executing an artifact suppression algorithm. According to the method, preoperative precise planning and intraoperative assistance are realized through artificial intelligence, the problems of poor image quality and high radiation risk are solved through technical optimization, and the method has important clinical application value.

The invention provides a scoliosis screening method and system, and relates to the technical field of medical artificial intelligence, human body image data on a low-light detection garment worn by a patient is collected, the human body image data is preprocessed and sent to an SSD module, the SSD module is used for predicting the position of a low-light light source, and a scoliosis detection result is obtained. The key point detection module is used for detecting human body scoliosis, high-precision detection frame information in the detection result is used as a basis, a human body posture result predicted by the key point detection module is restrained and corrected, then human body scoliosis grading is performed, a human body scoliosis detection result is displayed and fed back to a patient, high-precision detection of scoliosis is achieved, and the system has the advantages of high efficiency, non-invasiveness and light weight; the scoliosis early detection rate and grading intervention precision can be remarkably improved, and the problems that traditional medical diagnosis is low in efficiency, large in radiation risk, insufficient in precision and difficult to operate on embedded equipment with limited resources are solved.

The invention provides an off-site full-range radiation risk evaluation method and system under a severe accident of a nuclear power plant, and the method comprises the steps: S1, building a radioactive accident risk evaluation basic model architecture, adapting to a model demand, and building a corresponding basic database; s2, constructing radioactive smoke plume characteristics after the accident; s3, calculating accident site space gridding and smoke plume transmission discretization; s4, sampling meteorological conditions, and simulating smoke plume transmission; s5, calculating the radiation dose in the early stage of the grid domain, and carrying out risk assessment; s6, performing risk assessment on the health effect in the early stage of the grid domain; s7, calculating the medium-and-long-term stage radiation dose in the grid domain, and performing dose risk assessment; and S8, performing health effect risk assessment and accident consequence assessment in the medium-and-long-term stage. According to the method, the whole transportation process of the radioactive smoke plume under a serious accident is simulated, loss effects such as dry and wet settlement and radioactive decay of the smoke plume are considered, and the activity of the radionuclide deposited on the ground and retained in the air in the off-site space range is determined.

The invention discloses a visual classification and intelligent analysis integrated radioactive source automatic verification system and method. The system is characterized by comprising a master control system, a grabbing device for automatically clamping and carrying a source box, automatic verification equipment for automatically verifying the source box, a carrying device for automatically conveying and storing the verified source box, and a lifting platform for driving the source box to lift. The mechanical arm drives the carrying device to replace manual work to clamp the source box on a truck to the automatic verification equipment, the automatic verification equipment automatically verifies the source box, after verification is completed, the mechanical arm drives the carrying device to clamp the source box to the material frame, and the carrying device carries and stores the source box on the material frame to the corresponding stock bin. And automatic verification and storage are realized, so that the identification accuracy and the storage operation efficiency of the radioactive source are improved, and the radiation risk and the labor intensity of personnel are reduced.

The invention discloses a real-time meteorological risk assessment method for low-altitude flight safety, and relates to the technical field of flight safety and meteorological information processing, and the method comprises the following steps: constructing a solar radiation sensitive factor prediction model, and inverting a sun vector according to latitude and longitude information and attitude parameters obtained by an aircraft in real time, and generating a radiation risk mapping field covering the flight track area based on the sun vector. According to the method, radiation risk mapping based on sun vector inversion is constructed, look-ahead identification of a thermal disturbance area is realized, and imaging window scheduling and flight attitude cooperative control are carried out in combination with a thermal disturbance potential index. Through signal-to-noise ratio driven multi-channel imaging control, frequency hopping sampling and Hadamard exposure modulation, solar radiation interference is effectively suppressed, and the image quality is improved. And the imaging residual error is fed back to the model to realize closed-loop updating, so that the safety and sensing reliability of low-altitude flight are comprehensively enhanced.

The invention discloses a hip joint surgical robot grinding and rubbing detection system and a detection tool thereof, and relates to the technical field of medical instruments. The device comprises a bottom plate and a grinding and rubbing assembly, a hip model assembly is fixedly connected to one side of the top of the bottom plate, an acetabular fossa model assembly is fixedly connected to the other side of the top of the bottom plate, and a tracer support is fixedly connected to the position, located at the rear end of the acetabular fossa model assembly, of the top of the bottom plate. The grinding and rubbing precision can be monitored in real time in the operation process, immediate feedback is provided, an operation team can find and correct errors in the grinding and rubbing process in time, the success rate of the operation is increased, tiny grinding and rubbing errors can be detected by accurately measuring the ball center position of the grinding and rubbing contour, it is ensured that the surgical robot achieves high-precision grinding and rubbing operation, and the working efficiency is improved. Multiple times of X-ray or CT scanning needed by traditional postoperative imaging evaluation are avoided, the radiation risk of a patient is reduced, the grinding and rubbing precision detection process is simplified, the operation time is shortened, and the operation complexity is reduced.

The invention provides a deep learning-based intelligent monitoring system and method for reservoir bank collapse risk, and relates to the technical field of bank monitoring, and the method comprises the steps: obtaining and preprocessing all monitoring point data of a reservoir bank monitoring network, and constructing a total monitoring point set; screening key base points and quantifying the inherent risk characterization quantity of the key base points; a dynamic association network of the common monitoring points and the key base points is established, and the final clustering association degree of the common monitoring points relative to the key base points is obtained; calculating a radiation risk value of each key base point to the associated common monitoring points in combination with the inherent risk characterization quantity and the final clustering association degree; fusing the radiation risk values of all the key base points to obtain a comprehensive risk value of the common monitoring point; constructing a directed weighted graph by taking the key base point as a source point, and dividing risk communities by adopting a graph neural network community discovery algorithm; and based on the community comprehensive risk value statistical distribution and the highest risk level of the contained key base points, assigning a unified risk level to each monitoring point and outputting the risk level.

The invention relates to the technical field of puncture auxiliary devices, in particular to a lung puncture laser guiding device based on a CT image and a control method. A set of complete puncture guiding and feedback mechanism is constructed through the reference positioner, the precise positioner and the visual feedback system, and the reference positioner forms a clear needle inserting mark on the body surface of a patient by emitting positioning laser. The precise positioner realizes precise projection and visual guidance of a theoretical needle inserting angle through cooperative movement of a first sliding rail, a second sliding rail and a braking sliding seat on the first sliding rail and the precise laser position indicator, and the visual feedback system captures and analyzes an actual operation image of a doctor in real time, calculates deviation between the actual needle inserting angle and a theoretical value, and displays the actual needle inserting angle and the theoretical value. Repeated puncture times are reduced, and the operation success rate and the patient safety are improved; the technical problems that in the puncture operation process, due to the fact that the angle is not easy to grasp, the puncture frequency of a patient is increased, pain of the patient is increased, and radiation risks of doctors and the patient are increased are solved.

The invention discloses a Riemannian manifold-based path planning method in a radiation environment, and belongs to the technical field of robot path planning in a nuclear environment, and the method comprises the following steps: S1, modeling an environment in which a robot moves, and establishing a Riemannian manifold influenced by environmental factors; s2, performing path search on the Riemannian manifold through an RRT * algorithm to generate an initial optimal path; and S3, performing path smooth optimization on the initial optimal path through collision-free constraint and non-incremental radiation constraint to generate a final smooth path. By introducing Riemannian measurement, the influence of environmental factors such as radiation risk on path selection is reflected more truly, efficient and safe path planning of the robot in a complex nuclear environment is effectively achieved, and the problem that an existing method depends on Euclidean distance as heuristic measurement, and the path selection accuracy is poor is solved. And the influence of environmental factors such as radiation risk on path selection cannot be truly reflected, so that path generation is unsafe.

The invention discloses a multi-channel radioactive source implantation system with a needle withdrawing driving function, which comprises a push rod output channel, a push rod, a push rod driving mechanism, a first connecting part, a first motion platform and a needle withdrawing driving mechanism, and is characterized in that the push rod pushes a radioactive source arranged in front of the push rod to be output along the push rod output channel; the first connecting part and one end of the push rod output channel are arranged on the two sides of the first moving platform respectively, the needle pulling driving mechanism and one end of the push rod output channel are arranged side by side, and the first moving platform drives one end of the push rod output channel and the needle pulling driving mechanism to move relative to the first connecting part. The push rod output channel is butted with different hole sites through the relative movement of the push rod output channel and the first connecting part, so that multi-channel implantation of radioactive particles is realized; the puncture needle is automatically pulled out through the needle pulling driving mechanism, the implantation precision and the implantation effect are improved, full-automatic operation is achieved, the radiation risk is avoided, the operation time is short, the structure is simple and reasonable, and driving is convenient and fast.

The invention discloses an intelligent preparation and precise implantation method for a pedicle screw path based on attitude perception. The method comprises the following steps: generating an attitude monitoring module representing real-time attitude angle data of a surgical instrument; the adaptive fixing mechanism is connected with the posture monitoring module and enables the measuring reference axis of the posture monitoring module to be consistent with the working direction of the instrument; when it is judged that the real-time posture angle is matched with the ideal nail path angle, a prompt signal is generated and output, an expensive robot platform is not needed, and real-time monitoring and intelligent prompt of the angle in the operation can be achieved by adapting the micro posture monitoring module to a common abrasive drill and other instruments; the robot-level implantation precision can be achieved by doctors in traditional manual operation, the three industrial pain points of insufficient judgment precision depending on experience, high cost and complex operation of a robot navigation system and radiation risk caused by repeated perspective in an operation in the prior art are effectively solved, and the operation safety and universality are remarkably improved with extremely low cost.

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 application discloses an acoustic intervention diagnosis and treatment integrated platform. The platform comprises a panoramic extracorporeal acoustic imaging system module, a panoramic intracorporeal acoustic imaging system module, a digital twin human-computer interaction module and a signal processing reconstruction and platform control module. The extracorporeal acoustic sensor and the intracorporeal acoustic imaging catheter respectively apply transducers to detect a to-be-detected region of a target object, and generate detection signals; the signal processing reconstruction and platform control module processes and visually reconstructs the detection signals to generate panoramic multi-scale acoustic imaging data of the to-be-detected region of the target object; and the digital twin human-computer interaction module is used for visually displaying the panoramic multi-scale acoustic imaging data. The scheme has no radiation risk and is safer, can be used in various clinical application scenarios, has a smaller occupied space compared with a DSA device, can be flexibly applied to various medical sites, and can timely and efficiently perform diagnosis and treatment.

The utility model relates to engineering detection technical field, discloses a kind of quick detection device of dry density specifically, to solve the problems such as traditional detection method operation cumbersome, low efficiency, existing radiation risk. Device core includes standard container, weighing sensor, signal conditioning circuit, single-chip microcontroller, hardware proportioning calculator, stable judging module, display screen and ventilation / heating module. Through RFID, container volume V is automatically read, weighing sensor measures soil sample mass m, proportioning calculator calculates dry density ρ=m / V in real time, and the result is output through display screen;Ventilation / heating module accelerates moisture evaporation, shortens detection time. The device has the advantages of real-time display, simple operation, avoids artificial error, no radiation risk, and is suitable for fine-grained soil, coarse-grained soil and frozen soil detection dry density requirements, etc., and is suitable for water conservancy engineering, such as earth dam filling and embankment engineering, building engineering and other fields of soil compaction quality rapid detection.

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 invention discloses a portable bedside magnetic resonance monitoring device and a use method, and belongs to the technical field of medical instruments. The device is composed of a transducer module, a magnet system, a master control and data processing module, a spectrometer system and a three-dimensional motion platform, the transducer module outputs ultrasonic signals, the magnet system is used for generating magnetic resonance signals, and the spectrometer system collects the magnetic resonance signals of brain tissue of a patient and carries out digital processing; the main control and data processing module carries out image reconstruction and display on the processed magnetic resonance signals, and the three-dimensional motion platform realizes position adjustment of the transducer module. The device can be moved to the bedside of a patient for detection, the timeliness and convenience of detection are greatly improved, the device works based on the magnetic resonance imaging principle, radiation risks do not exist, safety is high, the blood brain barrier opening effect of the patient can be dynamically monitored conveniently, and a quantitative basis can be provided for adjustment of a clinical treatment scheme.

This application discloses an intelligent monitoring system for use in radiation environments such as nuclear power plants, including data acquisition equipment, network transmission equipment, and control equipment. The network transmission equipment receives data collected by the acquisition equipment and transmits the data to the control equipment. The acquisition equipment includes fixed acquisition units and mobile acquisition units. The fixed acquisition units are installed in defined radiation risk areas within the radiation environment, while the mobile acquisition units are installed in potential radiation risk areas within the radiation environment. The network transmission equipment includes multiple network switching units and wireless network switching units, with the multiple network switching units connected to the fixed acquisition units and the control equipment. The control equipment includes control units and access control units. The intelligent monitoring system provided by this invention can provide comprehensive coverage of area monitoring and can utilize intelligent image processing technology to achieve automatic analysis, judgment, and response functions.

The invention discloses a bone surgery steel plate fixing auxiliary device, and relates to the field of medical instruments, the bone surgery steel plate fixing auxiliary device comprises a fixing seat and an adjusting mechanism movably arranged at the bottom end of the fixing seat and used for adjusting the clamping distance, clamping mechanisms used for clamping bones are symmetrically arranged at the bottom end of the fixing seat in a sliding mode, and an opening and closing mechanism is fixedly arranged on one side of each clamping mechanism; fixing mechanisms for fixing a steel plate are symmetrically and movably arranged on one side of the opening and closing mechanism, and a centering sleeve rod for centering the steel plate is fixedly arranged in the middle of the bottom end of the adjusting mechanism; the centering sleeve rod penetrates through the center of the steel plate, so that the center of the steel plate is aligned with the center of a skeleton; the clamping plate is driven by the third spring to provide reverse clamping force, and the steel plate is stably and centrally clamped by combining the silica gel pad; the steel plate slides down to the bone surface and is attached to the bone surface in cooperation with opening and closing of the check blocks, the problems that in a traditional operation, the steel plate is prone to deviating from the center and attaching is inaccurate are solved, the repeated adjustment and X-ray perspective times in the operation are reduced, and the radiation risk is reduced.

This invention relates to the field of radiation early warning technology, specifically to an early warning system for the radiation impact on the environment surrounding a proton therapy system. The system includes a radiation monitoring data acquisition module, a radiation spatial distribution generation module, a radiation risk level determination module, a radiation leakage analysis module, a dynamic risk information notification module, and a treatment optimization suggestion module. In this invention, by real-time monitoring and data integration of the radiation monitoring environment, the response speed and accuracy of radiation safety early warning are improved. By utilizing spatial data and radiation intensity information, a detailed radiation distribution map can be constructed, making risk assessment more intuitive and easier to understand. Accurate assessment of radiation risk allows for specific and targeted protective measures, and potential leakage points are classified according to radiation level deviations. Dynamic notification of risk information ensures that treatment personnel receive critical safety alerts in a timely manner, optimizing the treatment process and reducing the radiation risk to patients.

The invention discloses an X-ray guided minimally invasive intervention rapid positioning puncture system, and relates to the technical field of medical instruments. According to the main structural design, a rigid positioning support is manufactured through an integrated forming process and comprises a fixed arm and an adjustable movable arm which are connected through a transmission mechanism, and a three-dimensional metal scaling point set is integrated on the top of the rigid positioning support; the puncture guide module is detachably connected with the adjustable movable arm and is provided with a universal guide structure adaptive to puncture needles of various specifications; the real-time compensation module is used for capturing human body surface displacement data and transmitting the data to the control host in real time; the control host is used for receiving the X-ray image signal and the human body surface displacement data, calculating and outputting a puncture angle correction instruction, dynamically optimizing an X-ray scanning mode and being provided with a man-machine interaction interface for parameter checking and adjusting. Based on the design, the comprehensive beneficial effects that the puncture positioning precision is improved, the clinical operation convenience is optimized, the doctor-patient radiation risk is reduced, and the equipment use economy is enhanced can be achieved.

The utility model relates to the technical field of nuclide protection, and provides a nuclear medicine split medicine injection fuming cupboard which comprises a split charging instrument, an activity meter, an injector and a shielding fuming cupboard. The shielding fuming cupboard is provided with an operation window and an injection window, the split charging instrument, the activity meter and the injector are all installed in the shielding fuming cupboard, and the split charging instrument is configured to split charging medicine and conduct activity detection through the activity meter, so that the dosage of the medicine is the target dosage, and the target dosage of the medicine is conveyed to the injector. The split charging instrument configures a target dose of medicine according to user requirements and delivers the prepared medicine to the injector, at the moment, an operator can stretch the hand into the shielding fuming cupboard through the operation window to pick up the injector, and meanwhile, the hand of a patient is placed close to the injection window, so that the patient can take the medicine out of the injection window. Therefore, an operator can inject the medicine in the injector into the body of a patient. In this way, the unnecessary radiation risk in the process is avoided while the split charging precision and efficiency are improved.

The embodiment of the invention relates to the technical field of radioactive substance sorting, in particular to a method for sorting samples in a hot cell, the samples have high radioactivity, and the method comprises the steps that feature images of simulation samples without radioactivity are obtained, the feature image of the simulation sample without radioactivity is similar to the feature image of the sample with high radioactivity; dispersing the mixed samples; obtaining an image of the dispersed sample; according to the obtained feature image, identifying an image with a predetermined feature from the obtained image of the sample; a sample corresponding to the image of the predetermined feature is picked up and placed at a predetermined position. By means of the method, multiple kinds of high-radioactivity samples can be accurately recognized and sorted in the high-radioactivity environment in the hot chamber, compared with an existing sorting mode, the accuracy and efficiency are higher, the radiation risk existing in manual operation can be avoided, and the sorting efficiency is improved. And the sorting safety is effectively improved.

The invention discloses a mobile CT intelligent scheduling and full-automatic navigation scanning system and a control method thereof, and belongs to the technical field of medical imaging equipment, and the control method comprises the following steps: S1, an intelligent scheduling module calculates a scanning priority based on a dynamic sorting algorithm of a patient criticality grade coefficient and a time penalty factor; s2, a multi-modal fusion navigation module realizes real-time positioning and path planning through cooperation of a digital twin map, a laser radar SLAM, a visual SLAM and a millimeter wave radar; all-directional movement is realized by cooperating with Mecanum wheels, and path optimization is realized; s3, dynamically triggering preheating by the bulb tube preheating control system in combination with the thermal capacity prediction model and the navigation path time; and S4, a full-automatic scanning module automatically generates a scanning protocol based on the physical sign of the patient, automatically detects the limb position, positions the scanning part, and realizes accurate movement of the Mecanum wheel through PID control. According to the invention, through intelligent scheduling, high-precision navigation and adaptive scanning, the problems of tedious operation, low efficiency, high radiation risk and the like of traditional mobile CT are solved.

The application provides a method and system for evaluating the whole range of radiation risk outside a nuclear power plant in a severe accident, and the method comprises the following steps: S1, a basic model architecture for evaluating the risk of radioactive accidents is built, the model requirements are adapted, and a corresponding basic database is established; S2, the characteristics of the radioactive plume after the accident are constructed; S3, the spatial gridding of the accident site and the discretization of the plume transmission are calculated; S4, the sampling meteorological conditions are obtained, and the plume transmission is simulated; S5, the radiation dose in the early stage of the grid domain is calculated, and the risk is evaluated; S6, the health effects in the early stage of the grid domain are evaluated; S7, the radiation dose in the medium and long term stage of the grid domain is calculated, and the dose risk is evaluated; S8, the health effect risk in the medium and long term stage is evaluated, and the consequences of the accident in the medium and long term stage are evaluated. The application simulates the whole transport process of the radioactive plume in a severe accident, considers the dry and wet deposition of the plume and the loss effects such as radioactive decay, and determines the activity of the radionuclide deposited on the ground and retained in the air within the spatial range outside the scene.

The application provides a signal processing method for a radioactivity detection device and the radioactivity detection device. The signal processing method for the radioactivity detection device comprises the following steps: analyzing a collected nuclear pulse signal to obtain pulse amplitude information; performing spectrum stabilization according to the pulse amplitude information to obtain a stabilized spectrum; and determining a nuclide identification result and a dose rate calculation result based on the stabilized spectrum. The technical scheme of the embodiment of the application can determine the current environmental dose rate level, ensure that the radiation dose received by the staff is within the safety limit, thereby reducing the radiation risk and protecting the health and safety of the staff. In addition, the specific radioactive nuclide can be identified, thereby helping to determine the pollution source.

The present application relates to a real-time monitoring method and system for radiation dose of a room where a staff member of a nuclear power plant works, comprising: after the staff member enters a control area of the nuclear power plant, a portable dosimeter acquires real-time radiation information of the staff member and real-time position information of the staff member; the portable dosimeter sends the real-time radiation information and the real-time position information to a background server; the background server receives the real-time radiation information and the real-time position information and triggers a calculation task; after triggering the calculation task, the background server calculates radiation data of the staff member in a current room according to the real-time radiation information and the real-time position information. The present application can refine the radiation condition of the staff member to a room level, provide more accurate and comprehensive dose information for radiation protection management, be more conducive to analyzing the radiation risk of the room, provide more powerful data support for formulating protection measures, and improve the safety of the staff member.

The utility model discloses a high-frequency shielding cover lifting structure, which relates to the technical field of high-frequency equipment and comprises an equipment cabinet, an equipment cavity and a processing bin are respectively arranged in the equipment cabinet, a lead screw lifting device is fixedly mounted in the equipment cavity, and a driving end of the lead screw lifting device is connected with a shielding cover. The opening is used for driving the shielding cover to lift to block or open the processing bin. According to the high-frequency shielding cover lifting structure, the mechanical lead screw lifting device is adopted to automatically control lifting of the shielding cover, a traditional manual operation mode is effectively replaced, and therefore the safety and the automation level of the high-frequency pressing process are greatly improved. By means of the improvement, the possibility that operators are exposed to the risk of high-frequency radiation is remarkably reduced, the overall efficiency and stability of the pressing process are effectively improved, and a solid foundation is laid for continuous optimization of product quality and reasonable control of production cost.

The invention discloses a pulmonary embolism identification and evaluation method based on electrical impedance tomography of a pulsation method, and belongs to the technical field of medical treatment. The method comprises the following steps: acquiring an electrical impedance signal through an electrode array surrounding the chest, separating a ventilation signal from a perfusion signal by using a preset algorithm, calculating a matching index, an image matching degree, a perfusion deficiency index and a ventilation deficiency index, judging a pulmonary embolism risk level by combining a blood flow to ventilation volume ratio, and generating a visual report; the method further comprises the steps of dynamic treatment effect monitoring, data processing, bedside monitoring, preparation before signal acquisition and the like. Noninvasive bedside identification of pulmonary embolism is achieved, the invasiveness, radiation risk and transfer limitation of traditional examination are avoided, the treatment effect can be evaluated in real time to assist scheme adjustment, diagnosis and treatment convenience and universality are improved, and reasonable allocation of medical resources and diagnosis and treatment standardization are assisted.

The invention discloses a radioactive dust waste collection and temporary storage automatic integration system and method, and the system comprises a handheld dust collection terminal which is provided with a dust collection port and a dust outlet; the fixed collection base station is detachably connected with the dust outlet of the handheld dust collection terminal, and the fixed collection base station automatically transfers the radioactive dust in the handheld dust collection terminal into the handheld dust collection terminal through negative pressure airflow; and the fixed collection base station is provided with a coagulation fixing unit for spraying a coagulation fixing agent to fix the loose radioactive dust. Through cooperation of the handheld dust collection terminal and the fixed collection base station, efficient collection of dust pollution in a complex operation space, automatic discharging and transferring of pollutants and preliminary fixation and safe temporary storage of the dust pollution can be achieved; the problems of difficulty in decontamination operation in complex scenes, radiation risk caused by manual filter bag replacement operation of personnel and temporary storage of dust pollutants are effectively solved.