14 results about "Digital subtraction angiography" patented technology

The invention discloses a PCI (Peripheral Component Interconnect) drug balloon postoperative effect prediction method, device and equipment based on a multi-modal image and a storage medium. The method comprises the following steps: firstly, collecting historical preoperative digital subtraction angiography (DSA) images of a plurality of patients, corresponding intracavitary image data and postoperative effect label data; further extracting vascular morphological parameters of a target lesion segment from the DSA image, extracting plaque microstructure features from the intracavity image, combining the vascular morphological parameters, the plaque microstructure features, clinical data of a patient and parameters of a drug balloon instrument into an input feature vector, and taking postoperative effect label data as a regression target; training an ensemble learning regression model; and finally, for a to-be-evaluated patient, acquiring a preoperative DSA image and an intracavity image, extracting features in the same way, inputting the features into the trained model, and outputting an immediate and / or long-term vasodilation gain prediction value of the patient after the PCI drug balloon operation so as to improve objectivity and reliability of a DCB preoperative decision.

The utility model relates to DSA equipment. The DSA equipment comprises a C-shaped arm, an X-ray tube, an inverter box and a high-pressure oil tank. The high-pressure oil tank is connected with the inverter box through a first cable; the high-voltage oil tank and the X-ray tube are both arranged on the C-shaped arm, the inverter box is used for providing high-frequency alternating current for the high-voltage oil tank, and the high-voltage oil tank is used for converting the high-frequency alternating current into high-voltage direct current so as to provide a high-voltage direct-current electric field for the X-ray tube, so that X-rays are generated in the X-ray tube. The high-voltage oil tank and the X-ray tube are arranged on the C-shaped arm, so that the distance between the high-voltage oil tank and the X-ray tube is greatly shortened, a high-voltage cable between the high-voltage oil tank and the X-ray tube is shortened or canceled, and the situation that when the system works in a kV pulse mode, a large number of invalid rays are generated when voltage drops is avoided; therefore, the radiation dose of doctors and patients is reduced. And meanwhile, the second cable is short, so that the difficulty and the cost of cable laying can be reduced.

An electrophysiological medical device includes a catheter, a magnetic positioning system, and a processing unit. The catheter is inserted into the human body. The magnetic positioning system includes a magnetic field generator and a magnetic sensor. The magnetic field generator generates a magnetic field, and the magnetic sensor moves with the catheter to detect first magnetic field information indicating the catheter's position within the body. The processing unit acquires the first magnetic field information from the magnetic positioning system and generates the catheter's original position information based on this information. The processing unit also acquires relevant information from a digital subtraction angiography (DSA) device that causes magnetic interference to the magnetic positioning system, corrects the catheter's original position information based on this information, and obtains and outputs the corrected position information of the catheter. This electrophysiological medical device can specifically address the impact of DSA equipment on the positioning accuracy of the magnetic positioning system, thereby improving positioning accuracy, avoiding the impact of low positioning accuracy on diagnosis and operation, and ultimately improving medical outcomes.

This application provides a target detection method, device, electronic device, and medium based on DSA images. The method includes acquiring a digital subtraction angiography (DSA) image, inputting the DSA image into a pre-trained target recognition model, obtaining a target recognition result including a reference DSA image. The reference DSA image carries a microguidewire prediction frame and a catheter prediction frame. The microguidewire prediction frame corresponds to first identification information, and the catheter prediction frame corresponds to second identification information. The positional relationship between the microguidewire and the catheter is determined based on the reference DSA image, the first identification information, and the second identification information. According to the solution provided in this application, the positional relationship between the microguidewire and the catheter is detected by replacing manual detection with a force-tactile module using a pre-set target recognition model. This effectively improves the efficiency of real-time target detection and positioning of the catheter and guidewire, thereby reducing the response time of interventional operations by vascular interventional surgery robots.

1. Name of the product in this design: X-ray computed tomography equipment (Haorui). 2. Application of this design: for X-ray imaging, as well as static 2D imaging, dynamic 2D imaging, digital subtraction angiography and 3D X-ray imaging of animals. 3. The key design features of this product are its overall shape. 4. The picture or photo that best illustrates the key design points: Design 1 3D diagram 1. 5. Design 1 is designated as the basic design.

The application discloses a kind of coronary angiography calcification identification method, system and storage medium based on deep learning, it is related to medical cardiovascular image processing technical field.The present application comprises the following steps: the comprehensive evaluation of different blood vessel angiography projection position of the to-be-tested coronary artery;According to the CT angiography, mark the calcification lesion on the original digital subtraction angiography image independently;Using U-net neural network combined with focal loss function learning and identifying the marked calcification lesion;The U-net neural network output result is input into the LSTM network to calculate the calcification score.The present application improves the accuracy of coronary artery calcification detection and improves the prediction performance of machine learning algorithm.

1. Name of the designed product: medical image equipment rack. 2. Use of the designed product: used as medical equipment, for digital subtraction angiography, etc. 3. Design points of the designed product: in shape. 4. Pictures or photos that best show the design points: design 1 perspective view 1. 5. The top of the designed product is not easily visible or not visible during use, and the design top view is omitted. 6. Design 1 is designated as the basic design.

This invention provides a femoral artery compressor after DSA (Digital Subtraction Angiography) in neurosurgery, belonging to the field of medical device technology. The femoral artery compressor includes a support plate, a support frame fixedly mounted on the upper end of one side of the support plate, a fixing frame mounted on the upper end of the support frame, and a clamping component on the lower side of the fixing frame. A cavity is formed inside the support plate, and a driving component is installed within the cavity. In this design, the driving component, in conjunction with a first piston plate, effectively avoids the risks associated with excessive compression pressure. When excessive compression pressure causes a drop in the patient's lower leg temperature, the thermally expanding liquid in the cavity contracts. The driving component then drives the threaded rod and the first piston plate, introducing some air from the airbag into the piston cavity, reducing the pressure of the compression plate on the rupture site and preventing discomfort such as coldness, numbness, and pain in the lower limbs. Simultaneously, the pressure adjustment process requires no manual intervention, responds promptly, reduces the operational burden on medical staff, and ensures the safety of compression hemostasis.

The application provides a renal artery image registration method and device, electronic equipment and storage medium, and relates to the technical field of image processing. The method comprises: processing a magnetic resonance T2 weighted coronal sequence to determine a key frame image containing a spine structure; splicing at least two frames of images in a digital subtraction angiography sequence to generate a reference image containing a spine panorama; back-projecting head-to-foot direction coordinates of a target slice center in a patient coordinate system in magnetic resonance angiography to a corresponding pixel row in the key frame image to obtain first pixel coordinates; calculating a physical displacement corresponding to the first pixel coordinates from a starting pixel coordinate; calculating a pixel displacement corresponding to the physical displacement in the reference image, and determining a positioning result of a renal artery entrance in the reference image based on the pixel displacement and a mapping point of the starting pixel coordinate in the reference image. Through the method provided by the application, the amount of contrast agent and related risks are effectively reduced.

The invention provides a blood vessel three-dimensional reconstruction method and system based on digital subtraction angiography, and relates to the technical field of medical image processing and three-dimensional reconstruction. The method comprises the following steps: performing frame-by-frame registration, subtraction processing and uniform sampling on a collected two-dimensional digital subtraction angiography DSA image sequence to obtain a frame sparse view; constructing and training a vessel three-dimensional reconstruction network based on the sparse view angle dynamic DSA, inputting the frame sparse view into the trained vessel three-dimensional reconstruction network based on the sparse view angle dynamic DSA, and generating geometric parameters and center attenuation values of all Gaussian kernels; calculating three-dimensional blood vessel volumes under all timestamps and performing voxelization averaging on the three-dimensional blood vessel volumes under all timestamps on the basis of the geometric parameters and the center attenuation values of all Gaussian kernels, and generating a static three-dimensional blood vessel model; and meanwhile, all Gaussian kernels are rendered to generate a synthesized DSA image under a new view angle. The invention aims to improve the integrity and the time sequence consistency of the micro blood vessel reconstruction under the sparse view angle.

This invention belongs to the field of medical image processing and analysis technology, specifically a three-dimensional vascular registration method for digital subtraction angiography (DSA) and magnetic resonance angiography (MRA). The invention includes: preprocessing DSA and MRA images to initially align the skull and eliminate intensity differences between images; segmenting blood vessels in the DSA and MRA images to remove skull and other brain tissue from the original images; initializing a three-dimensional vascular map by converting the blood vessels in the original images into a vascular map model; performing rigid registration of the blood vessels to initially align the vascular structures in physical space; and performing non-rigid registration of the blood vessels to correct vascular deformation. This invention can achieve high-precision alignment of DSA and MRA in three-dimensional space, ensuring the consistency of vascular structures and providing more accurate image support for the diagnosis, preoperative planning, and postoperative evaluation of clinical vascular diseases.

The invention provides a method and device for realizing double-image collaboration in an operating room, and the method comprises the steps: obtaining operation type information, selecting a target DSA mode from a plurality of digital subtraction angiography DSA modes based on the operation type information, and after the target DSA mode is determined to be a double-plate collaboration mode, performing double-plate collaboration on the target DSA mode, the suspension type DSA sub-device is controlled to be arranged at a main scanning position above the operating bed, and meanwhile the movable type DSA sub-device is controlled to move to an auxiliary scanning position on the side of the operating bed through the driving base to enter a cooperative positioning state; in the cooperative positioning state, the suspended DSA sub-device and the mobile DSA sub-device are controlled to synchronously collect image data of an operation area, and main view image data and auxiliary view image data are obtained; and performing image display based on the main view image data and the auxiliary view image data. The embodiment of the invention can support switching between a double-plate cooperation mode and a single-plate mode, and is suitable for different operation scenes.

The invention discloses a transcranial Doppler probe total transmission fixing system compatible with a digital subtraction angiography environment. The system comprises: a base module for stably anchoring the system to an operating bed; the connecting arm module is composed of a connecting rod and a joint which can be transmitted by X-rays and is used for providing large-range coarse positioning; and a probe clamping and fine adjusting module. The core of the device is that a probe clamping-holding and fine adjustment module adopts an integrated design, a spherical hinge mechanism used for large-angle attitude adjustment and an XYZ three-axis fine adjustment mechanism used for precise translation are integrated in a single unit made of a total-transmission material, and mechanical decoupling of a coarse adjustment locking force and a fine adjustment mechanism is realized. According to the system provided by the invention, X-ray artifacts can be avoided, the interference risk with the C-shaped arm is reduced, stable, accurate and repeatable positioning is provided for the TCD probe, and continuous and stable monitoring signals are ensured.

Provided in the present description are a vascular projection visualization method and apparatus, and a storage medium and an electronic device. The method comprises: acquiring a first image of a target region by computed tomography angiography and a second image of the target region by digital subtraction angiography; determining a vascular path and a plaque region in the first image, and constructing a mesh structure of the vascular path; on the basis of a positional relationship between the mesh structure and the plaque region in the first image, obtaining an occlusion relationship between the mesh structure and the plaque region; and on the basis of the occlusion relationship, rendering a mesh structure and the plaque region in the second image, so as to obtain a fused image. A mesh structure of a vascular path is constructed, and on the basis of an occlusion relationship between the mesh structure and a plaque region, the mesh structure and the plaque region are rendered in a second image to obtain a fused image, such that a positional relationship between the mesh structure and the plaque region in a mapping direction of the second image is intuitively reflected while the degree of vascular stenosis, the degree of vascular dilation, and the location of a plaque are displayed.