100 results about "Electrical impedance imaging" patented technology

The invention relates to an electrical impedance detection method and device, an electronic device and a storage medium, which are applied to the field of electrical impedance imaging, and the electrical impedance detection method comprises the following steps: obtaining an electrode signal of a target electrode in a measurement area; a plurality of preset electrodes are attached to the measurement area; the target electrode comprises any one of a plurality of preset electrodes; the electrode signal carries excitation electrode data and measurement electrode data generated by the target electrode; determining a fluctuation value of the target electrode according to the excitation electrode data and the measurement electrode data; when the fluctuation value is within a preset fluctuation threshold range, based on a preset electrode measurement method, electrode contact impedance of the measurement area is obtained; and generating an electrode adjustment result based on the electrode contact impedance and sending the electrode adjustment result to the client. According to the method and the device, the problem that the efficiency of electrical impedance measurement is relatively low due to the fact that whether the electrode falls off or is in poor contact cannot be quickly judged during bioelectrical impedance imaging is solved.

The invention relates to a visual airway clearance device with an intelligent airway internal and external oscillation control function. The visual airway clearance device comprises an electrical impedance imaging device, a controller, an airway internal oscillation device and an airway external oscillation device. The electrical impedance imaging device is used for evaluating the lung ventilation function condition of a patient and transmitting measured lung ventilation function index parameters of the patient to the controller; the controller receives the pulmonary ventilation function index parameters of the electrical impedance imaging device, processes the pulmonary ventilation function index parameters and outputs a control signal; and after receiving the control signal, the air passage internal and external oscillation devices adjust the operation modes and parameters of the air passage internal and external oscillation devices in real time. The system has the advantages that a four-dimensional integrated structure of electrical impedance imaging visual evaluation, intelligent mode selection, double-oscillation cooperation and closed-loop feedback is created for the first time, the problem that the traditional technology cannot dynamically adapt to the heterogeneity of patients is solved, and personalized airway clearance modes and optimal adjustment parameters are provided for different patients; and the effect of removing airway deposited secretions is obvious.

The invention relates to a petroleum polluted soil polycyclic aromatic hydrocarbon migration path simulation experiment system, which comprises a main reaction cabin, a mechanical arm collaborative operation module, a multi-mode sensing module, a whole natural environment regulation and control module and an edge intelligent decision-making platform, an annular magnetic suspension track is arranged at the top of the main reaction cabin, and a soil sample chamber is arranged at the bottom of the main reaction cabin; the multi-modal sensing module comprises an EIT (electrical impedance tomography) module, an LIBS (laser-induced breakdown spectroscopy) module and a terahertz time-domain spectroscopy module and is used for measuring global conductivity distribution of soil in a soil sample chamber, inverting the porosity of the soil sample and a pollutant concentration field in pore water, analyzing the concentration of carbon, hydrogen and oxygen elements of pollutants and specifically detecting polycyclic aromatic hydrocarbon molecules; the edge intelligent decision-making platform interacts with the multi-mode sensing module, the full-natural-environment regulation and control module and the mechanical arm collaborative operation module to actively adjust system parameters, and repair intervention is carried out on soil body degradation. And automatic preparation of the polluted soil can be realized, and migration monitoring under different practical engineering application working conditions can be realized.

The invention discloses a reverse osmosis membrane concentration polarization layer thickness prediction method and device based on electrical impedance tomography, and relates to the technical field of membrane process nondestructive monitoring, and the method comprises the following steps: constructing a simulation model based on an electrode array membrane filtration sensor; virtual media with different conductivities are arranged on the surface of the membrane, a simulation conductivity image is reconstructed through a conjugate gradient least square algorithm and a sensitivity matrix, and a neural network is improved through known conductivity training; and reconstructing an actually measured conductivity image by an actually measured boundary voltage data set, predicting a membrane surface conductivity estimated value by using the trained improved neural network, and performing concentration polarization layer thickness mapping. A conductivity image with a conductivity label is generated through numerical simulation, so that the problem that the thickness of the concentration polarization layer is difficult to calibrate is solved, then a neural network is improved through training so that the truth value of the conductivity can be predicted according to the conductivity image, and interpretable mapping of the thickness of the concentration polarization layer is carried out in combination with a membrane mass transfer theory. The thickness of the concentration polarization layer can be subjected to online lossless quantitative detection.

The invention relates to the technical field of intelligent nursing, in particular to an electrical impedance tomography-based pressure sore risk perception and prevention control system, which comprises an EIT signal acquisition module, an impedance trend grading module, a risk area judgment module, a bed body intervention control module and an intervention feedback regulation module. According to the invention, through an electrical impedance imaging principle, fine distinguishing of body surface and superficial tissue physiological states of a patient is realized, multi-region impedance signals are continuously collected and dynamically integrated, local tissue perfusion changes and abnormal stress trends are accurately mapped, high-risk regions are automatically identified and classified, bed body action intervention is triggered in real time, and an intervention effect is dynamically tracked; according to the method, intervention parameters are cooperatively adjusted, the response logic and the intervention rhythm of each region are gradually improved, intelligent risk judgment and closed-loop adaptive intervention are completed, individuation, initialization and process data traceability in a nursing scene are promoted, and adaptive response aiming at complex illness conditions and variable nursing requirements is supported.

The invention discloses a motion posture recognition detection method based on transfer learning, belongs to the field of biomedical signal processing and machine learning, and aims at improving the robustness of a model under the condition of electrode position change by constructing an adversarial training mechanism and aligning data distribution before and after electrode offset in a feature space. The problem of data distortion caused by electrode displacement in the electrical impedance tomography EIT technology is solved, and the accuracy of posture recognition is improved.

The invention discloses an electrical impedance tomography method, which integrates a physical model and deep learning to construct a deep learning framework with physical constraints so as to improve physical consistency and reconstruction precision. According to the method, a neural network based on an encoder-decoder structure is adopted, and measured boundary voltage is used as input to predict conductivity distribution of a target object; in order to improve the performance of the neural network, a physical Jacobian matrix is introduced, and the sensitivity of boundary voltage to conductivity is described; and constructing a physical regularization loss function, comparing a physically calculated Jacobi matrix with a neural network predicted Jacobi matrix, and combining a final total loss function with data error loss and physical consistency loss. According to the method, data driving model training is guided through physical constraints, combination of physical information and deep learning is achieved, the precision of electrical impedance reconstruction and the generalization ability of the model are remarkably improved, and a new solution thought is provided for the fields of medicine, flexible electronics, environment monitoring and the like.

The invention discloses a thoracic cavity three-dimensional electrical impedance tomography method and thoracic cavity three-dimensional electrical impedance tomography equipment. The method comprises the following steps: acquiring a three-dimensional point cloud of the appearance of a chest area of a testee to establish a three-dimensional chest model; carrying out equipment self-inspection and checking the bonding condition of the electrode; generating a determined excitation signal and injecting the excitation signal into the testee; acquiring a voltage signal of each electrode; separating EIT and ECG signals and filtering the EIT and ECG signals; according to a three-dimensional thoracic cavity model of the testee, performing positive problem calculation on the voltage signal to obtain the potential of each electrode of the three-dimensional thoracic cavity model; and performing three-dimensional reconstruction by adopting a single-step Gaussian Newton method to obtain a lung ventilation change electrical impedance imaging graph. According to the method, the three-dimensional thoracic cavity model of the testee is constructed, the positive problem solution is performed on the voltage signal, and the image reconstruction is further performed, so that the real-time high-precision three-dimensional dynamic imaging of the thoracic cavity of the testee can be completed, and the imaging accuracy is high.

The invention relates to an electrical impedance tomography data processing method and device and a storage medium. The impedance imaging data processing method comprises the following steps: acquiring a plurality of channel data of a plurality of electrodes in a measurement area; calculating a signal disturbance comprehensive index based on the channel data; under the condition that the data state is determined to be an abnormal state based on the signal disturbance comprehensive index, filtering and baseline correction are carried out on the channel data based on the signal disturbance comprehensive index to obtain optimized data; obtaining tissue transmission impedance based on the channel data; on the basis of tissue transmission impedance, respiratory impedance physiological characteristic indexes are obtained; determining a mutation frame in the optimization data based on the respiratory impedance physiological characteristic index; and obtaining valid data based on the mutation frame. According to the invention, the problem of low data validity in the electrical impedance imaging system is solved.

The present application relates to a kind of electrode belt and electrode assembly for electrical impedance imaging, it is related to biomedical electrical impedance imaging technical field.The electrode belt for electrical impedance imaging of the present application, including band body, the band body includes multiple electrode segments arranged along length, and elastic segment between adjacent electrode segments, the electrode segment can be used to set electrode assembly, the thickness of the electrode segment is greater than the thickness of the elastic segment, so that the elastic segment is more likely to occur elastic deformation compared with the electrode segment.Band body can be more conveniently fixed around the body of the object to be measured, and the fixing mode is simple, can make electrode and the surface of the object to be measured always keep good contact.

The invention discloses an extensible three-dimensional electrical impedance imaging electrode array device, and belongs to the technical field of biomedical measurement. The device comprises a two-dimensional electrode interface module which is connected with original two-dimensional equipment through a series input and expansion interface; the three-dimensional common electrode array comprises a plurality of groups of electrodes at different horizontal layers; the input end of the three-dimensional electrode control module is connected to the two-dimensional electrode interface module, and the output end of the three-dimensional electrode control module is connected to the three-dimensional common electrode array. The control module comprises an electrode array control connector which is connected in parallel and an isolation type analog switch unit of a multi-stage series analog switch structure. By sending a control signal to the control connector, all electrode channels on a certain layer in the three-dimensional electrode array are uniformly gated, and original two-dimensional measurement is mapped to a three-dimensional space. According to the invention, three-dimensional measurement can be realized without changing the original equipment, the number of vertical layers expanded by serial connection of interfaces is supported, the number of horizontal electrodes expanded by parallel connection is controlled, and high compatibility, high expansibility and excellent signal isolation capability are realized.

The application discloses an electrode ring and an electrical impedance imaging system for electrical impedance imaging. The electrode ring comprises a metal ring, a filler, an elastic fabric, a plurality of electrodes and a plurality of electrode lines, wherein the metal ring can adjust its diameter in a circular structure; the filler is arranged between the metal ring and the elastic fabric; the elastic fabric covers the metal ring, the filler and the plurality of electrodes; the plurality of electrode lines are wrapped between the filler and are led out as an electrode belt after being gathered together and are connected with an external electrical impedance imaging system; the plurality of electrodes are fixed on the surface of the elastic fabric in an equidistance manner, each electrode is connected by a corresponding electrode line, and the electrodes are not connected with each other. The electrode ring designed in the application can freely stretch and shrink in different limb diameter ranges, solves the problem of unfixed electrode spacing in the existing electrical impedance tomography electrode technology, and improves the wearing comfort and the stability of signal acquisition.

The application discloses a brain injury identification method and an identification system. The identification system identifies the injury of a patient according to the identification method. The identification method comprises the following steps: firstly, the electrical impedance tomography (EIT) of the brain of the patient is performed to obtain the EIT image of the brain of the patient; then, the region with abnormal resistivity distribution in the EIT image of the brain is taken as a reference for scanning of a near-infrared spectrometer, and a scanning path of the near-infrared spectrometer is planned; finally, the near-infrared spectrometer is scanned along the scanning path, and the lesion range and the lesion type are determined according to the obtained near-infrared spectral data. The electrodes need not be arranged on the whole head of the patient, and the automatic and rapid identification of the lesion range and the nature of the brain injury is realized.

The invention relates to the technical field of focused ultrasound treatment, in particular to a real-time feedback phased array focused ultrasound treatment system, which comprises the following steps of: 1, fixing integrated equipment of ultrasonic transducers and EIT electrodes which are alternately and annularly arranged on a head, acquiring a three-dimensional image of the head by using imaging technologies such as CT or MRI and the like, and marking the spatial positions of the electrode, the ultrasonic array and the treatment target spot on the image. According to the invention, brain region real-time three-dimensional electrical impedance imaging is used as feedback, the excitation time sequence, intensity and phase of the ultrasonic array are adaptively adjusted, the influence of skull structure difference on ultrasonic focusing can be effectively overcome, the system calculates the phase shift of the ultrasonic array in real time, it is ensured that an ultrasonic beam is accurately focused at a treatment target, and the treatment accuracy is improved. The device is particularly suitable for a patient with a complex skull structure, the treatment accuracy is improved, it is ensured that ultrasonic energy accurately acts on a lesion area, and damage to surrounding healthy tissue is avoided.

The present application relates to the technical field of image processing, and more particularly to a method and system for evaluating electrical impedance state by fusing CT features. The method comprises the following steps: CT scanning of a subject to obtain CT scan data; generating an anatomical mask according to the CT scan data to obtain anatomical mask data; collecting three-dimensional impedance data by an electrical impedance scanning device; extracting multi-scale decomposition features according to the three-dimensional impedance data to obtain decomposition feature data; mapping an elastic harmonics network according to the decomposition feature data and the anatomical mask data to obtain a shape-calibrated impedance map data; extracting regional impedance features from the shape-calibrated impedance map data according to the anatomical mask data to obtain regional impedance feature data; and obtaining regional anomaly probability value data according to the regional impedance feature data. The present application fuses CT anatomical information and multi-scale electrical impedance features, realizes shape accurate alignment and regional anomaly recognition, and improves the spatial resolution of electrical impedance imaging.

The invention provides an EIT-based lung strain detection method and system and a continuous detection method and system, and relates to the technical field of electrical impedance tomography, and the EIT-based lung strain detection method comprises the steps: obtaining absolute impedance data of the lung of a target object at the end of expiration and absolute impedance data of the lung at the end of inspiration; and determining the lung strain of the target object based on the absolute impedance data of the lung of the target object at the end-expiratory moment and the absolute impedance data of the lung at the end-inspiratory moment. The EIT-based lung strain detection method provided by the invention not only can realize accurate detection of lung strain, but also has the advantages of no radiation, no invasiveness, no requirement for a special working environment, no need for patient cooperation, low equipment cost, convenience in operation and the like.

The invention discloses an electrical impedance tomography method based on parameter optimization and boundary clustering, which combines penalty functions of two regularization algorithms Tikhonov and TV for application, proposes that a particle swarm algorithm is used for regularization parameter optimization of the combined penalty functions, and takes an image quality index (AL) as a fitness value of the particle swarm algorithm, so as to determine an optimal regularization parameter, and finally to obtain the electrical impedance tomography based on the parameter optimization and boundary clustering. The conductivity is obtained through a Newton iteration method, in order to further remove the artifacts, a boundary object B (artifacts) of the target is obtained through a Niblack algorithm, deep retrieval is conducted on the boundary object B of the target through a boundary clustering algorithm, all background pixels A are obtained, and the final conductivity distribution can be obtained. Simulation and actual measurement results show that the image reconstructed by the paper method can more accurately reflect the position information of the target object in the electric field, artifacts are effectively inhibited, and the reconstruction effect is improved.

The invention discloses an EIT reconstruction method and system based on cross-domain learning and physical guidance. The method comprises the following steps: setting conditions; collecting voltage measurement data, and constructing a two-dimensional voltage data matrix; defining source domain data and target domain data; performing feature coding on the data of the two domains, and introducing physical bias based on a lead field similarity matrix in the coding process; and inputting the coded data into the same decoder to perform conductivity image reconstruction, and performing cross-domain consistency learning in combination with a loss function. The system comprises a condition definition module, a data preprocessing module and a model training module. By using the method and the device, the problems of reconstruction resolution reduction and structure distortion caused by insufficient measurement information can be effectively relieved, so that the image reconstruction quality under a low-electrode condition is remarkably improved. The method can be widely applied to the field of electrical impedance images.

The embodiment of the invention provides a dynamic tissue deformation-oriented real-time electrical impedance tomography optimization method and system. The method comprises the following steps of: obtaining dynamic deformation characteristics of a target tissue; based on the dynamic deformation characteristics, determining and adjusting a data sampling frequency; acquiring electrical impedance data by using the adjusted data sampling frequency; and performing real-time image reconstruction based on the electrical impedance data. Through the scheme of the embodiment of the invention, the problem of how to regulate and control the data sampling frequency according to the dynamic tissue deformation characteristics so as to solve the problem of insufficient real-time performance of image reconstruction can be solved.

This invention discloses a method for measuring cranial thickness based on bioelectrical impedance analysis (BIA), comprising: dividing the target region into subdivisions using the finite element method (FEM) to establish a finite element model; acquiring surface voltage signals of the skull using a four-electrode method on a brain electrical impedance imaging platform; obtaining the conductivity distribution of each node of the triangular element by solving the inverse voltage problem; inputting the conductivity distribution into the finite element model and calculating the distance between the node with the largest resistivity change and the corresponding boundary voltage node by solving the forward problem, thus obtaining the skull width at a set of signal locations; measuring the node voltages and calculating the corresponding skull thickness using a sixteen-electrode cyclic excitation method; and finally, assembling all node voltages and skull thicknesses into a plane to obtain the overall skull thickness. This invention designs a method for measuring cranial thickness based on bioelectrical impedance analysis (BIA), providing an accurate method for calculating cranial thickness.

The present application relates to the field of biotechnology, and more specifically, to a device for monitoring and intervening in electric fields for cells, which, to a certain extent, can overcome the technical challenges of existing cell monitoring and electric field intervention devices, and solve the problems of insufficient spatial resolution of traditional impedance spectroscopy in cell culture monitoring and low flexibility in electric field intervention spatial settings. The device includes a main control unit, an electric field intervention unit, an electrical impedance scanning unit, a temperature monitoring and adjustment unit, an energy supply unit, a communication unit, and an integrated monitoring and intervention electrode; by multiplexing the electrical impedance measurement electrode with the electric field intervention electrode, the accuracy of three-dimensional electrical impedance imaging of cells can be improved, and at the same time, a flexible electric field intervention mode setting is provided. The device also integrates cell electrical impedance monitoring, electric field intervention function, and temperature monitoring and control function, which can monitor and adjust the growth state of cells under electric field intervention and the temperature change of the device in real time to ensure safety.

The application discloses a knee joint imaging method and device, a server and a storage medium. The method is executed by the server, the server is wirelessly connected with an electrical impedance imaging device and a terminal device, and the method comprises the following steps: receiving electrical impedance imaging data collected by the electrical impedance imaging device on a knee joint region of a target object; performing image reconstruction on the electrical impedance imaging data collected by the electrical impedance imaging device on the knee joint region of the target object to obtain a knee joint effusion detection image; and sending the knee joint effusion detection image to the terminal device, and displaying the knee joint effusion detection image on the terminal device through a graphical user interface. According to the technical scheme, the electrical impedance imaging data collected by the server on the knee joint region of the target object is subjected to image reconstruction, cloud imaging is realized, compared with the existing local imaging scheme, the image reconstruction speed is improved, and a high-performance computer does not need to be installed locally, so that the knee joint effusion detection is more convenient.

The invention belongs to the technical field of medical rehabilitation assessment, and provides a urinary surgery postoperative wound rehabilitation assessment method based on artificial intelligence, electronic equipment and a storage medium. The method comprises the steps of multi-source data acquisition, data preprocessing, spatial alignment, normalization processing, three-branch network feature extraction, feature integration, feature compression, feature mapping and wound rehabilitation grade matching. Through three-mode objective data of microwave imaging, electrical impedance imaging and bioelectrical impedance, the whole data acquisition process is free of invasion and interference, and errors caused by individual differences are reduced; through a three-branch feature extraction network and a deep fusion process, different types of data characteristics are adapted, cross-modal information complementation is realized, and wound rehabilitation multi-dimensional key signals are captured.

The invention provides a method and system for evaluating local lung strain, and relates to the technical field of electrical impedance tomography. The method for evaluating the local lung strain comprises the following steps: determining an absolute impedance total value of a region of interest of a lung of a target object at the end of inspiration and an absolute impedance total value of the region of interest at the end of expiration, wherein the region of interest comprises at least one lung pixel of the lung of the target object; the strain of the region of interest is determined based on the total absolute impedance value of the region of interest at the end of inspiration and the total absolute impedance value at the end of expiration. By means of the method and system for evaluating the local lung strain, local strain detection of the lung of the patient can be achieved, and individualized respiratory support can be achieved.

The invention discloses a knee joint imaging method and device, a server and a storage medium. The method is executed by a server, the server is in wireless communication connection with electrical impedance imaging equipment and terminal equipment, and the method comprises the following steps: receiving electrical impedance imaging data collected by the electrical impedance imaging equipment for a knee joint area of a target object; performing image reconstruction on the basis of electrical impedance imaging data acquired from the knee joint area of the target object through an electrical impedance imaging device to obtain a knee joint effusion detection image; the knee joint effusion detection image is sent to terminal equipment, and the terminal equipment displays the knee joint effusion detection image through a graphical user interface. According to the technical scheme, the electrical impedance imaging data collected by the knee joint area of the target object is subjected to image reconstruction through the server, cloud imaging is achieved, compared with an existing local imaging scheme, the image reconstruction speed is increased, a high-performance computer does not need to be installed locally, and knee joint effusion detection is more convenient.

The invention relates to an electrode anomaly detection method and device and computer equipment. The method is applied to the electrical impedance imaging system, the electrical impedance imaging system comprises a plurality of electrodes, and the method comprises the following steps: determining a plurality of groups of excitation electrodes and response electrodes in the plurality of electrodes according to a preset rule; acquiring a plurality of response signals based on each group of excitation electrodes and response electrodes; dividing the plurality of response signals into a plurality of response signal groups according to each group of excitation electrodes and response electrodes; constructing a corresponding first fitting image according to each response signal group; and according to the plurality of first fitting images, determining a target abnormal electrode, thereby realizing rapid positioning of the abnormal electrode.

The invention discloses a skin tumor three-dimensional electrical impedance tomography method and device and a storage medium. The method comprises the following steps: acquiring a skin surface boundary voltage signal by using a planar electrode, and generating a space virtual electrode equivalent voltage through nonlinear mapping from a planar electrode domain to a space virtual electrode domain; mapping the voltage into a two-dimensional voltage feature map through bilinear interpolation, inputting the feature as prior information into a three-dimensional electrical impedance imaging reconstruction network, and performing depth matching inversion on the body area conductivity distribution based on a sliding window SwinUNet network to obtain a three-dimensional conductivity image; constructing a skin tissue finite element model, and generating a simulation data set; and training nonlinear mapping by adopting the simulation data set and verifying the depth matching inversion performance. The method can still keep stable reconstruction quality under uncertain conditions such as poor electrode contact, channel loss and skin structure change, has high robustness and adaptability, and has good clinical application value.

The application discloses a muscle imaging method based on a conditional diffusion model and electrical impedance, a medium and equipment, and belongs to the technical field of image processing. The method comprises the following steps: for a measured target, collecting physical electrical impedance data by using an electrical impedance equipment to obtain boundary electrical impedance values; and inputting the boundary electrical impedance values into an image reconstruction model to obtain an electrical impedance imaging result. The image reconstruction model is obtained according to the following steps: constructing a data set reflecting the corresponding relationship between electrical impedance data and a standard image; adding noise to the standard image step by step through conditional diffusion to obtain a noise image, and processing the electrical impedance data into an edge electrical impedance feature mapping diagram; inputting the noise image and the edge electrical impedance feature mapping diagram into a denoising network for training to learn the mapping relationship between boundary electrical impedance data and a real image; and taking the trained denoising network as the image reconstruction model. The application improves the image reconstruction effect and generalization ability.

The present invention discloses a device and method for monitoring cerebral stroke based on non-contact electrical impedance imaging and current focusing. The device is composed of a non-contact current focusing sensor, an electrode switching module, a data acquisition module and an image reconstruction host computer. The non-contact current focusing sensor includes a focusing electrode layer, a detection electrode layer and two insulating layers. Among them, the focusing electrode is used to achieve a current focusing effect, thereby improving the detection depth and sensitivity of the signal; the detection electrode is responsible for obtaining the detection current containing brain electrical impedance information. The image reconstruction host computer is used to achieve image reconstruction and obtain real-time images and quantitative parameters of cerebral stroke. The present invention has the advantages of being non-contact, wearable, safe and friendly, highly sensitive, low cost, and having a fast imaging speed. It is suitable for scenarios such as homes, clinics, ambulances, etc. that require rapid diagnosis or real-time monitoring and are not covered by equipment such as CT / MRI, and avoids the measurement requirements of existing electrical impedance imaging equipment where patients need to shave their heads or implant electrodes.

The invention relates to the technical field of electrical impedance imaging, and discloses a high-frame-rate electrical impedance imaging method and system based on sparse representation. The method comprises the steps of collecting original electrical impedance data, and performing preprocessing to obtain a training sample matrix; carrying out dictionary learning algorithm training by utilizing the training sample matrix to obtain an optimized dictionary matrix; setting a mask matrix for electrical impedance data acquisition, and performing sparse sampling on the original electrical impedance data according to the mask matrix to obtain incomplete data frames; and carrying out sparse representation on the incomplete data frame by using the optimized dictionary matrix, solving a corresponding sparse vector, and recovering the original electrical impedance data by using the dictionary matrix and the sparse vector. The method can effectively improve the system frame rate, is suitable for different electrical impedance imaging platforms, and does not depend on specific hardware.