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50 results about "Coronary stenosis" patented technology
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Coronary Stenosis. Coronary Stenosis is that situation in which a coronary artery got lessened and backed up in the company of materials like cholesterol or fat. Coronary artery is a blood container situated in the heart. The providing of blood to the heart is done by the coronary artery.
System and methods for performing endovascular procedures
InactiveUS20060058775A1Procedure is complicatedEasy to controlStentsGuide needlesExtracorporeal circulationAtherectomy
A system for inducing cardioplegic arrest and performing an endovascular procedure within the heart or blood vessels of a patient. An endoaortic partitioning catheter has an inflatable balloon which occludes the ascending aorta when inflated. Cardioplegic fluid may be infused through a lumen of the endoaortic partitioning catheter to stop the heart while the patient's circulatory system is supported on cardiopulmonary bypass. One or more endovascular devices are introduced through an internal lumen of the endoaortic partitioning catheter to perform a diagnostic or therapeutic endovascular procedure within the heart or blood vessels of the patient. Surgical procedures such as coronary artery bypass surgery or heart valve replacement may be performed in conjunction with the endovascular procedure while the heart is stopped. Embodiments of the system are described for performing: fiberoptic angioscopy of structures within the heart and its blood vessels, valvuloplasty for correction of valvular stenosis in the aortic or mitral valve of the heart, angioplasty for therapeutic dilatation of coronary artery stenoses, coronary stenting for dilatation and stenting of coronary artery stenoses, atherectomy or endarterectomy for removal of atheromatous material from within coronary artery stenoses, intravascular ultrasonic imaging for observation of structures and diagnosis of disease conditions within the heart and its associated blood vessels, fiberoptic laser angioplasty for removal of atheromatous material from within coronary artery stenoses, transmyocardial revascularization using a side-firing fiberoptic laser catheter from within the chambers of the heart, and electrophysiological mapping and ablation for diagnosing and treating electrophysiological conditions of the heart.
Owner:EDWARDS LIFESCIENCES LLC
Method and System for Automatic Detection and Classification of Coronary Stenoses in Cardiac CT Volumes
A method and system for providing detecting and classifying coronary stenoses in 3D CT image data is disclosed. Centerlines of coronary vessels are extracted from the CT image data. Non-vessel regions are detected and removed from the coronary vessel centerlines. The cross-section area of the lumen is estimated based on the coronary vessel centerlines using a trained regression function. Stenosis candidates are detected in the coronary vessels based on the estimated lumen cross-section area, and the significant stenosis candidates are automatically classified as calcified, non-calcified, or mixed.
Owner:SIEMENS HEALTHCARE GMBH
Valve designs for left ventricular conduits
InactiveUS20060111660A1Prevent backflowPrevent the backflow of bloodStentsHeart valvesCoronary arteriesHeart chamber
Owner:WILK PATENT DEVMENT +1
Method and system for automatic detection and classification of coronary stenoses in cardiac CT volumes
A method and system for providing detecting and classifying coronary stenoses in 3D CT image data is disclosed. Centerlines of coronary vessels are extracted from the CT image data. Non-vessel regions are detected and removed from the coronary vessel centerlines. The cross-section area of the lumen is estimated based on the coronary vessel centerlines using a trained regression function. Stenosis candidates are detected in the coronary vessels based on the estimated lumen cross-section area, and the significant stenosis candidates are automatically classified as calcified, non-calcified, or mixed.
Owner:SIEMENS HEALTHCARE GMBH
Method and System for Automatic Detection of Coronary Stenosis in Cardiac Computed Tomography Data
A method and system for automatic coronary stenosis detection in computed tomography (CT) data is disclosed. Coronary artery centerlines are obtained in an input cardiac CT volume. A trained classifier, such as a probabilistic boosting tree (PBT) classifier, is used to detect stenosis regions along the centerlines in the input cardiac CT volume. The classifier classifies each of the control points that define the coronary artery centerlines as a stenosis point or a non-stenosis point.
Owner:SIEMENS HEALTHCARE GMBH
Treatment of Coronary Stenosis
The invention describes includes a device and method for dilating a coronary arterial stenosis and for creating a transection in the myocardium. The transection creates a new artery composed partially of the old artery and partially of the normal healing tissue and myocardium. Several dilating means are described, as well as several cutting means and alignment means by which the cutting means may be located and properly oriented. In operation, the dilating means, cutting means and alignment means are advanced in the distal end of a catheter, which may be guided into position by a guidewire.
Owner:LARY RES & DEV
Method and system for automatic detection of coronary stenosis in cardiac computed tomography data
A method and system for automatic coronary stenosis detection in computed tomography (CT) data is disclosed. Coronary artery centerlines are obtained in an input cardiac CT volume. A trained classifier, such as a probabilistic boosting tree (PBT) classifier, is used to detect stenosis regions along the centerlines in the input cardiac CT volume. The classifier classifies each of the control points that define the coronary artery centerlines as a stenosis point or a non-stenosis point.
Owner:SIEMENS HEALTHCARE GMBH
Detecting coronary stenosis through spatio-temporal tracking
Embodiments relate to detecting coronary stenosis through spatio-temporal tracking. Aspects include extracting a coronary artery tree from each of a sequence of angiogram images, creating a mean artery tree from the extracted coronary artery trees, and projecting the mean artery tree back onto each of the sequence of angiogram images to recover a complete coronary artery tree for each of the sequence of angiogram images. Aspects also include extracting one or more tubular sections from each of the sequence of angiogram images, estimating an arterial width for each of the one or more tubular sections from each of the sequence of angiogram images, and creating a spatio-temporal surface from the arterial widths of the one or more tubular sections over a time spanned by the sequence of angiogram images. Aspects further include detecting a minimum in the spatio-temporal surface and determining if the minimum is indicative of stenosis.
Owner:IBM CORP
Systems and apparatus for indicating risk of coronary stenosis
ActiveUS20140134654A1Increased riskHealth-index calculationMicrobiological testing/measurementAge and genderMass Spectrometry-Mass Spectrometry
A computer-based method for determining a prediction of risk and / or an indication of extent of coronary stenosis in a human subject, comprises the steps of: (a) inputting the level of at least one cholesteryl ester measured in a blood sample collected from said subject; and then (b) inputting the age and gender of said subject; and then (c) generating in said computer from said cholesteryl ester level input, said age input and said gender input a prediction of risk and / or an indication of extent of coronary stenosis blood sample by mass spectrometry.
Owner:WAKE FOREST UNIV HEALTH SCI INC
Cobalt-chromium alloy artery stent with full-biodegradation medicine coating, stent system and preparation method thereof
ActiveCN101745153AImprove flexibilityShorten repair timeStentsSurgeryPercent Diameter StenosisCvd risk
The invention provides a cobalt-chromium alloy artery stent with full-biodegradation medicine coating; the full-biodegradation coating of the stent has good stent flexibility, pathological change permeability and radial bearing force; the invention further provides a preparation method of the stent; multi-level coating applying technology, metallic support surface inert gas processing process and the like are adopted, the firmness of the stent surface coating, the toughness and tensile strength thereof are greatly improved, thereby being beneficial to keeping the integrity of the coating; in addition, the invention provides a cobalt-chromium alloy artery stent with full-biodegradation medicine coating, which is prepared by radial grading squeezing process, the damage of the coating can be avoided to the greatest extent, the retention force between the stent and a conveying system is greatly improved, the possibility that the stent is migrated in the conveying process is avoided, the clinical using risk is reduced, and the problems of coronary artery stenosis and restenosis are effectively solved.
Owner:万瑞飞鸿(北京)医疗器材有限公司
Device for detecting coronary artery stenosis
The invention discloses a device for detecting the coronary artery stenosis of a human body, wherein, the device can detect parameters relative to the coronary artery stenosis in a noninvasive and nondestructive manner. The device adopts the method that five heart sound signal sensors are arranged at five different parts of an anterior chest wall so as to monitor heart sound signals, an electrocardiosignal detection electrode is arranged on a wrist of the right hand and the lower parts of ankles of two feet or is arranged on the wrists of two hands and the lower part of the ankle of a right foot so as to detect electrocardiosignals, a controller is used for controlled so as to lead a multi-channel synchronous A / D (Analog to Digital) conversion module to convert five heart sound signals that are acquired synchronously and the electrocardiosignals, converted signals are sent to a data processing module for data processing module, and the parameters relative to the coronary artery stenosis are obtained.
Owner:济南汇医融工科技有限公司
Treatment of coronary stenosis
The invention describes includes a device and method for dilating a coronary arterial stenosis and for creating a transection in the myocardium. The transection creates a new artery composed partially of the old artery and partially of the normal healing tissue and myocardium. Several dilating means are described, as well as several cutting means and alignment means by which the cutting means may be located and properly oriented. In operation, the dilating means, cutting means and alignment means are advanced in the distal end of a catheter, which may be guided into position by a guidewire.
Owner:LARY RES & DEV
Method and device for establishing coronary artery physiological index relationship, and method and device for applying a coronary artery physiological index relationship
ActiveCN109036551AImprove accuracyImprove reliabilityMedical simulationCatheterCoronary arteriesCoronary physiology
The invention discloses a method and device for establishing a coronary artery physiological index relationship, and a method and device for applying a coronary artery physiological index relationship. The method for establishing the coronary artery physiological index relationship comprises obtaining a plurality of human body parameters in a unit of human; determining the coronary artery physiological index of each person in a unit of human; establishing a first corresponding relationship between the plurality of human body parameters and the coronary artery physiological indexes of each person in a unit of human; establishing optimization fusion according to the first corresponding relationship to determine a second corresponding relationship between various physiological parameters andvarious coronary artery physiological indexes; acquiring a plurality of human body parameters of a patient; and determining the coronary artery physiological indexes corresponding to various physiological parameters according to the second corresponding relationship. The optimization fusion method of the invention can evaluate the physiological severity of coronary stenosis more accurately and reliably than a method just using geometric measurement.
Owner:北京心世纪医疗科技有限公司
CT imaging quality detection body model simulating cardiovascular system movement, control method and quality detecting method
ActiveCN109528224ADifferent degrees of stenosisRadiation diagnostics testing/calibrationComputerised tomographsImaging qualityEngineering
Owner:THE SECOND AFFILIATED HOSPITAL ARMY MEDICAL UNIV
Controlled drug release composition and drug releasing medical device
InactiveCN101309706AFacilitated releaseAdjust timingSurgeryCatheterGlycerolSarpogrelate Hydrochloride
A drug releasing medical device of the invention is provided with a controlled drug release composition containing 100 parts by weight of an organic polymeric material which is soluble in an organic solvent and insoluble in water, 5 to 60 parts by weight of a release auxiliary agent which is lipid-soluble and low in molecular weight and a 1 to 70 parts by weight of a drug. When the composition is applied to a stent, a catheter, an organ replacement medical device, an artificial organ or the like in the form of coating or the like, a drug releasing function is given to the medical device. From a surface of a stent for treating coronary stenosis, which is a preferred embodiment, argatroban, sarpogrelate hydrochloride or both of them are released gradually. In order to express a controlled release property in a desired period of time, the drug to be released gradually is carried in a polymeric material coated on a metal surface constituting the stent or in a porous stent substrate. It is preferred that the polymeric material is noncrystalline and further biodegradable and contains a tartaric acid ester, a malic acid ester or a monoester or diester of glycerine as the release auxiliary agent.
Owner:TOKAI UNIV +1
Genetic polymorphisms associated with coronary stenosis, methods of detection and uses thereof
The present invention is based on the discovery of genetic polymorphisms that are associated with coronary stenosis. In particular, the present invention relates to nucleic acid molecules containing the polymorphisms, variant proteins encoded by such nucleic acid molecules, reagents for detecting the polymorphic nucleic acid molecules and proteins, and methods of using the nucleic acids and proteins as well as methods of using reagents for their detection.
Owner:APPL BIOSYSTEMS INC
Method and System for Non-Invasive Functional Assessment of Coronary Artery Stenosis Using Flow Computations in Diseased and Hypothetical Normal Anatomical Models
A method and system for non-invasive assessment of coronary artery stenosis is disclosed. A patient-specific real anatomical model of a diseased coronary artery of a patient is generated from medical image data of the patient. A hypothetical normal anatomical model is generated for the diseased coronary artery of the patient. Blood flow is simulated in each of the patient-specific real anatomical model of the diseased coronary and the hypothetical normal anatomical model for the diseased coronary artery. A hemodynamic index is calculated using simulated blood flow rates in the patient-specific real anatomical model of the diseased coronary and the hypothetical normal anatomical model for the diseased coronary artery. In particular, fractional flow reserve (FFR) for the diseased coronary artery is calculated as the ratio of the simulated blood flow rate in the patient-specific real anatomical model of the diseased coronary artery and the simulated blood flow rate in the hypothetical normal anatomical model for the diseased coronary artery.
Owner:SIEMENS HEATHCARE GMBH
Blood vessel three-dimensional modeling method, device and system with narrow lesion interval
The invention provides a method, a device and a system for acquiring a vascular stenosis lesion interval and performing three-dimensional synthesis. A blood vessel center line is extracted from coronary artery two-dimensional contrast images of the at least two body positions in the direction from the coronary artery inlet to the coronary artery tail end; A straightened blood vessel image is acquired according to the coronary artery two-dimensional contrast image and a blood vessel center line; a straightened blood vessel contour line is acquired according to the straightened blood vessel center line and the straightened blood vessel image; geometric information of the straightened blood vessel is acquired. Three-dimensional modeling is carried out according to the geometric information, the center line and the contour line to obtain a three-dimensional blood vessel model with a narrow lesion interval. The stenosis lesion interval is stereoscopically displayed to a patient and a doctorin a three-dimensional blood vessel model mode, the stenosis lesion interval is more vivid, all angles of the stenosis lesion can be displayed, the influence of the shooting angle of the two-dimensional radiography image on the judgment result of coronary artery stenosis is reduced, and the stenosis lesion area of the blood vessel can be accurately judged.
Owner:SUZHOU RAINMED MEDICAL TECH CO LTD
Method for measuring vascular diameter in coronary angiography image based on depth learning
InactiveCN109222980AAvoid methodAvoid differencesImage analysisDiagnostic recording/measuringPattern recognitionData stream
The invention discloses a method for measuring the vascular diameter in a coronary angiography image based on depth learning. The method for measuring the vascular diameter in a coronary angiography image based on depth learning comprises the following steps: a DSA image processing module converts real-time acquired DSA image data into a data stream which can be processed by a subsequent module, and stores the data stream in a memory and sends the data stream to a depth network segmentation module. The depth network segmentation module segments the acquired DSA image data to distinguish the blood vessel pixel from the background pixel. The centerline extracting module extracts the blood vessel centerline from the blood vessel pixel image. The diameter calculation module calculates the measured diameter, the reference diameter and the stenosis rate of the blood vessel based on the segmented image and the blood vessel centerline. Compared with the PVA method, the invention has more objective results and avoids the differences between different doctors and different hospitals due to different interpretation methods. This method does not need manual intervention and is easy to operate.It can be used by doctors in coronary angiography and can provide objective reference for doctors to determine the degree of coronary stenosis.
Owner:北京红云智胜科技有限公司 +1
Coronary artery stenosis estimation method, system and device
PendingCN111833343AEfficient use ofEasy to captureImage enhancementImage analysisCoronary arteriesDICOM
The invention discloses a coronary artery stenosis estimation method, system and device. The method comprises the steps: carrying out the preprocessing of an obtained medical digital imaging and communication DICOM image, and obtaining a DICOM image meeting the requirements; inputting the preprocessed DICOM image into a pre-trained neural network, and outputting a calcified area and a coronary artery area through the neural network; determining a calcified area where the plaque with the maximum diameter is located and a corresponding coronary artery area; calculating the maximum diameter of the calcified area and the corresponding coronary artery diameter, calculating the coronary artery stenosis degree according to the maximum diameter of the calcified area and the corresponding coronaryartery diameter, obtaining the lesion level corresponding to the coronary artery stenosis degree, and outputting the lesion level and the coronary artery stenosis degree.
Owner:北京小白世纪网络科技有限公司
Auxiliary device for pulsatile coronary artery bypass
An auxiliary device for safely and surely performing off-pump coronary artery anastomosis and low-invasive coronary artery bypass. This device consists of a means for elevating the heart to enable an operator to see the anastomosed part directly in the face and, at the same time, achieving the static state of the anastomosed part; a means for perfusing the blood in the peripheral side of the coronary artery during the anastomosis of a blood vessel for bypass; and a means for fastening the coronary artery in the central side and in the peripheral side of the anastomosed part of the coronary artery to thereby block the blood flow, thus maintaining the anastomosed part in a blood-free state.
Owner:SUMITOMO BAKELITE CO LTD
Sustained release preparation for therapy of coronary stenosis or obstruction
InactiveUS20060148691A1Prominent effectIncrease blood flowPeptide/protein ingredientsGenetic material ingredientsCoronary arteriesAngiogenesis Factor
A pharmaceutical composition for therapy of coronary artery narrowing or blockage, which comprises a sustained release preparation containing an angiogenesis factor or a gene encoding the same and a gelatin hydrogel is disclosed. Examples of the angiogenesis factor which may be used include e.g., bFGF and other FGFs, VEGF, HGF, PDGF, TGF, angiopoietin, HIF, cytokine, chemokine, adrenomeduline and the like.
Owner:MEDGEL CORP
Detecting coronary stenosis through spatio-temporal tracking
Embodiments relate to detecting coronary stenosis through spatio-temporal tracking. Aspects include extracting a coronary artery tree from each of a sequence of angiogram images, creating a mean artery tree from the extracted coronary artery trees, and projecting the mean artery tree back onto each of the sequence of angiogram images to recover a complete coronary artery tree for each of the sequence of angiogram images. Aspects also include extracting one or more tubular sections from each of the sequence of angiogram images, estimating an arterial width for each of the one or more tubular sections from each of the sequence of angiogram images, and creating a spatio-temporal surface from the arterial widths of the one or more tubular sections over a time spanned by the sequence of angiogram images. Aspects further include detecting a minimum in the spatio-temporal surface and determining if the minimum is indicative of stenosis.
Owner:INT BUSINESS MASCH CORP
Method for diagnosing and positioning coronary artery stenosis by using computer
InactiveCN114359140AAdd depthImprove accuracyImage enhancementImage analysisCoronary arteriesComputer vision
The invention relates to a method for diagnosing and positioning coronary artery stenosis by using a computer, which comprises the following steps of: processing a first multi-dimensional coronary artery matrix depth information image through calculation, and calculating and processing a first stenosis area blood vessel part Kt in the first multi-dimensional coronary artery matrix depth information image through a first calculation unit to obtain a first image A; and performing first image instance segmentation Go on the first image A to obtain a segmented second coronary artery blood vessel image.
Owner:JILIN UNIV
Method of noninvasively calculating personalized coronary artery branch blood flow reserve capacity
InactiveCN110731771AClearly definedEasy to understandDiagnostic signal processingSensorsCoronary arteriesEngineering
The invention provides a method of noninvasively calculating personalized coronary artery branch blood flow reserve capacity, and belongs to the field of biomedical engineering. The method includes the steps: cardiac ultrasound data is adopted to obtain the flow of a coronary artery at a resting state; on the basis of coronary artery CT image files, a coronary artery three-dimensional model is rebuilt, and the length, volume and opening cross-section area of a coronary artery branch are measured; then, according to coronary artery fractal coefficients and allometry laws, a flow distribution method based on the opening cross-section area of the coronary artery branch is built, in combination with resistance mathematical models corresponding to coronary artery stenosis segments and coronaryartery non-stenosis segments, the pressure of a coronary artery distal outlet is obtained, and through hydrodynamics, coronary artery distal outlet flow taking stenosis effects into account is calculated; and finally, according to the relationship that the flow of the coronary artery at a maximum congestion state is 3 times that of the coronary artery at the resting state, coronary artery distal outlet flow at the maximum congestion state is obtained, and by comparing a threshold value of 3 with the ratio of the coronary artery blood flow at the maximum congestion state and the coronary arteryblood flow at the resting state, the coronary artery branch blood flow reserve capacity is determined.
Owner:BEIJING UNIV OF TECH
Coronary artery stenosis quantification method and device
ActiveCN111340794AMitigating the effects of stenosis quantificationImage enhancementImage analysisCoronary arteriesArterial stenosis
The invention provides a coronary artery stenosis quantification method and device, and the method comprises the steps: building the corresponding relation between the multi-view image features of a coronary artery multi-view medical image and the morphological parameters of coronary artery stenosis through the self-learning capability of an artificial neural network; obtaining current multi-viewimage features of the current coronary artery multi-view medical image of the patient; determining morphological parameters of the current coronary artery stenosis corresponding to the current multi-view image features through the corresponding relationship; specifically, determining the morphological parameters of the current coronary artery stenosis corresponding to the multi-view image features, which includes that the morphological parameters of the coronary artery stenosis corresponding to the multi-view image features identical to the current multi-view image features in the corresponding relation are determined as the morphological parameters of the current coronary artery stenosis. The morphological parameters of coronary artery stenosis are predicted based on multiple perspectives, and the influence of stenosis overlapping with other blood vessels on stenosis quantification is relieved.
Owner:SUN YAT SEN UNIV
Cobalt-chromium alloy arterial stent system with full biodegrade medical coating
ActiveCN103212117AImprove mechanical propertiesGood biocompatibilityStentsSurgeryCoronary arteriesTransport system
The invention provides a cobalt-chromium alloy arterial stent system with a full biodegrade medical coating. The system comprises a transport system and a cobalt-chromium alloy arterial stent which has a full biodegrade medical coating and is sleeved on the transport system. The transport system comprises a push rod, a sacculus and a jacket respectively fixedly connected to both ends of the push rod, and a handle with a Luer joint. A cone-shaped hardened guide wire is arranged at the sacculus end of the push rod. The cobalt-chromium alloy arterial stent with the full biodegrade medical coating is sleeved on the sacculus. The system can avoid damage of the coating to the maximum extent, improve the retaining force between the bracket and the transport system greatly, prevent the probability that the bracket is out of load in the transport process, and reduce the clinical use risk, so that the problems of coronary artery stenosis and restenosis are effectively solved.
Owner:万瑞飞鸿(北京)医疗器材有限公司
Coronary artery stenosis visualization quantification method and device based on multi-channel heart sound
ActiveCN112494000AImprove forecast accuracyIntuitively reflect the health statusCatheterDiagnostic recording/measuringCoronary arteriesHistogram
The invention discloses a coronary artery stenosis visualization quantification method and device based on multi-channel heart sound, and is suitable for the field of analysis of cardiophonogram electrocardiograms. The method comprises the steps of synchronously collecting and recording electrocardiosignals and multi-channel heart sound signals, and storing the electrocardiosignals and the multi-channel heart sound signals as audio files; segmenting heartbeat cycle signal data into S1, a systolic period, S2 and a diastolic period by using R waves and heart sound characteristics; respectively calculating characteristic values of each section of the heartbeat cycle and the total heartbeat cycle; performing stenosis degree risk prediction by adopting multi-model prediction and decision rules;and representing the coronary artery stenosis risk degree by adopting columnar graphs with different colors and heights. According to the method, various characteristics are extracted, heartbeat cycle characteristics are reflected in all directions, and the model prediction accuracy is improved through the multi-machine learning model and the use of decision rules. The health condition of the coronary artery is visually reflected in the forms of the energy spectrogram and the histogram.
Owner:河北德睿健康科技有限公司
A method based on the principle of ffr to quickly determine the size model of vascular stenosis resistance and microcirculation resistance
The invention relates to a method for establishing a model for rapidly judging blood vessel stenosis resistance and microcirculation resistance based on the FFR principle, belonging to the field of model establishment. It is a method based on the principle of FFR to quickly judge whether coronary stenosis causes myocardial ischemia. Obtain the systolic blood pressure, diastolic blood pressure, cardiac output, and CT images of the patient; then based on the CT images of the patient, reconstruct the three-dimensional model of the coronary artery, measure and record the diameter of each branch vessel; and then distribute the blood flow. Based on the data collected from multiple groups of systolic blood pressure, diastolic blood pressure, blood flow and stenosis rate, a logistic regression equation was established. Then, the above parameters were substituted into the established logistic regression model to judge the vascular stenosis resistance and microcirculation resistance, and then preliminarily judge whether coronary stenosis caused myocardial ischemia. This method is computationally fast.
Owner:BEIJING UNIV OF TECH
Coronary artery stenosis lesion degree identification method based on multi-classifier fusion
PendingCN113408603AImprove applicabilityImprove diagnostic efficiencyCharacter and pattern recognitionICT adaptationCoronary arteriesStenotic lesion
The invention discloses a coronary artery stenosis lesion degree identification method based on multi-classifier fusion. The method comprises the following steps: firstly, constructing an image sample library; preprocessing a CT original sequence diagram extracted by a heart CTA, and then performing feature extraction to extract three types of features including interested texture features, gray features and geometric features; dividing the samples into a training group and a test group, calculating the correlation between each feature and a prediction result, and removing the features with small correlation; establishing a multi-classifier fusion prediction model, fusing results of the single classifiers to predict the coronary artery stenosis lesion degree, meanwhile, determining the weights of the three single classifiers in the fusion classifier through a weighting method, and when the stenosis degree is lower than 50%, judging that the sample a normal sample, and when the stenosis degree is larger than 50%, judging that the sample is a lesion sample. According to the method, automatic classification and pre-judgment on the aspect of judging the stenosis degree are realized, and the injury to a patient caused by an invasive operation is avoided.
Owner:西安华企众信科技发展有限公司
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