46 results about "Fluoroscopic imaging" patented technology

The invention discloses an IC (integrated circuit) chip packaging detection method for realizing system-in-package and 3D (three-dimensional) packaging, which relates to the technical field of chip packaging detection, and comprises the following steps: vertically stacking a plurality of DRAM (dynamic random access memory) core particles on a basic logic core particle with a micro-bump array on the surface through silicon through holes, and activating a self-detection circuit to obtain a suspicious area coordinate list; dividing regional risk levels through a targeted scanning scheduling algorithm, and generating a differentiated scanning parameter set; for each suspicious area, controlling an external X-ray source to collect multispectral projection data according to the differential scanning parameter set; performing three-dimensional reconstruction on the multiple groups of multispectral projection data by using an enhanced reconstruction model embedded with physical priori knowledge to obtain enhanced three-dimensional body data; and performing automatic defect identification on the enhanced three-dimensional body data, and outputting the identified defect as a detection result. The invention aims to solve the problems of difficulty in perspective imaging and insufficient resolution of internal defects of the high-density 3D stacked chip.

The gas-phase welding equipment comprises a liquid storage tank, a preheating device, a heating cavity and a perspective imaging system, the liquid storage tank is used for storing gas-phase liquid, the preheating device is connected to the liquid storage tank and heats the gas-phase liquid to a first temperature, and the heating cavity is connected to the preheating device and heats the gas-phase liquid to a second temperature. The perspective imaging system is used for heating the gas-phase liquid until the gas-phase liquid is evaporated so as to heat a workpiece, the perspective imaging system comprises a ray imaging assembly, a servo driving mechanism and a digital imaging device, the ray imaging assembly is arranged above the heating cavity through the servo driving mechanism, and the ray imaging assembly can be located in the heating cavity through the servo driving mechanism to carry out horizontal moving scanning; the digital imaging device is arranged below the heating cavity and used for receiving rays of the ray imaging assembly to form a perspective image, and specific defect factors can be analyzed according to the perspective image of a workpiece welding spot, so that the specific defect factors are fed back to gas-phase welding equipment to adjust corresponding working parameters such as pressure, temperature, constant-temperature time and cooling slope.

The invention relates to an inter-hole electromagnetic wave perspective imaging inversion method based on a particle swarm optimization algorithm, and belongs to the field of inter-hole electromagnetic wave perspective attenuation coefficient imaging. Comprising the following steps: initializing an attenuation coefficient, a particle swarm number, a position, an individual optimal position, a group optimal position and a fitness threshold of each grid divided by a perspective stratigraphic interval; calculating the updating speed of the attenuation coefficient of each grid in each particle; calculating the terminal field intensity of each ray according to the ray tomography theory, and calculating the fitness of each current particle by combining the actually measured field intensity; comparing the fitness of each particle with the fitness calculated by the particle individual optimal position of each particle and the swarm optimal position of the particle swarm to obtain a new particle individual optimal position and a new swarm optimal position of the particle swarm; repeating the steps until the fitness meets the requirement; the attenuation coefficient of each grid obtained at the moment is the optimal attenuation coefficient. According to the method, the number of iterations can be effectively reduced, and the inversion calculation accuracy is improved.

Example systems and techniques are disclosed that may determine a three-dimensional (3D) model of a coronary vasculature of a patient. An example system may include memory configured to store the 3D model and processing circuitry communicatively coupled to the memory. The processing circuitry may be configured to obtain first fluoroscopy imaging data from a first viewing angle and obtain second fluoroscopy imaging data from a second viewing angle. The processing circuitry may be configured to determine the 3D model of the coronary vasculature of the patient based on the first fluoroscopy imaging data and the second fluoroscopy imaging data. The processing circuitry is configured to obtain additional imaging data from one or more imagers other than a fluoroscopy imager and update the 3D model based on the additional imaging data. The processing circuitry may be configured to output for display a representation of the 3D model.

The present invention discloses a vascular guidewire tracking method based on Res-Unet and a hidden Markov model, comprising the following steps: S1, training a preoperative neural network model; S2, 2D / 3D alignment; S3, construction and introduction of an HMM probability model; the tip tracking and roadmap used in the present invention can be performed continuously using fluoroscopic imaging, reducing the use of X-ray imaging and contrast agents when obtaining position information, and reducing the radiation dose received by doctors and patients; the present invention provides a 3D roadmap next to the 2D roadmap, which will provide more information for doctors with difficult cases. The present invention constructs an HMM model to track the guidewire tip, and the nature of the tracking method provides temporal consistency of the tracking results, thereby being robust to changes in the field of view, etc.

A system and method for navigation of a luminal network including receiving a computed tomography (CT) image data set, generating a three-dimensional (3D) model, displaying the 3D model in a user-interface on a display operatively connected to the computing device, and receiving an indication of a location of a tumor in the CT image data set. The system and method further including displaying the location of the tumor in the 3D model, receiving an indication of a margin around the tumor to achieve a desired therapy, generating a pathway to the tumor for navigation of a catheter, receiving a location of a sensor associated with a navigation catheter and registering the CT image data set with a luminal network of a patient, displaying the location of the sensor within the 3D model that substantially corresponds to the location of the sensor within the luminal network of the patient.

The X-ray fluoroscopic imaging device (100) comprises a photographing unit (1), an X-ray image acquiring unit (20) for acquiring an X-ray image (10), an object distribution learning and recognizing unit (21) for outputting the distribution of an object captured in the X-ray image using a learning model (7), an image quality improving processing unit (22), and a display unit (3), wherein the image quality improving processing unit is configured to be able to switch between a first image processing mode and a second image processing mode, wherein in the first image processing mode, image quality improving processing is performed on the X-ray image using a learning and recognition result (7a) of the object distribution learning and recognizing unit, and in the second image processing mode, image quality improving processing is performed on the X-ray image without using the learning and recognition result.

The invention provides an arm structure which can arrange a monitor on the side opposite to a machine base through an X-ray generator, is light in weight and does not affect the internal structure of the machine base. According to the arm structure, an upper surface guide rail is fixed to the upper surface of a base, and a back guide rail is fixed to the upper portion of the back of the base. An arm base part is clamped on the sliding guide rail, and an arm supporting column part is mounted on the arm base part. The arm part is of a structure for fixing the vertical rod to the horizontal rod. An end portion of the horizontal rod is connected to the arm strut portion. The horizontal rod is rotatable with respect to the central axis of the arm support column portion. A monitor bracket for holding a monitor is attached to the lower end of the vertical rod.

The embodiment of the invention provides an intelligent medical insurance fund dynamic supervision method and system. The intelligent medical insurance fund dynamic supervision method and system can solve the problems of data vulnerabilities and low efficiency in supervision. The method comprises the following steps: acquiring medicine identification information of a medicine corresponding to a target prescription, and searching first contour feature information corresponding to the medicine in a preset medicine information base according to the medicine identification information; a perspective imaging device is controlled to collect first particle accumulation image information of the medicine outer package in the first state; a perspective imaging device is controlled to collect second particle accumulation image information of the medicine outer package in a second state; calculating according to the first particle accumulation image information and the second particle accumulation image information to obtain second outline feature information of the medicine; and comparing the first contour feature information with the second contour feature information, and generating alarm information when the first contour feature information is not matched with the second contour feature information.

A surgical implant planning computer for intra-operative CT workflow, pre-operative CT imaging workflow, and fluoroscopic imaging workflow. A network interface is connectable to a CT image scanner and a robot surgical platform having a robot base coupled to a robot arm that is movable by motors. A CT image of a bone is received from the CT image scanner and displayed. A user's selection is received of a surgical screw from among a set of defined surgical screws. A graphical screw representing the selected surgical screw is displayed as an overlay on the CT image of the bone. Angular orientation and location of the displayed graphical screw relative to the bone in the CT image is controlled responsive to receipt of user inputs. An indication of the selected surgical screw and an angular orientation and a location of the displayed graphical screw are stored in a surgical plan data structure.

To display, in real time, a fluoroscopic image subjected to super-resolution processing without requiring recognition or designation of a range of a subject image.SOLUTION: An X-ray image is generated from an output of an X-ray detector, and a field-of-view region corresponding to an irradiation region within the X-ray image is determined on the basis of a position of diaphragm blades of a movable diaphragm or the X-ray image. A magnification factor for enlarging the field-of-view region to a display image having a predetermined size is calculated. When the magnification factor is greater than a predetermined value, the X-ray image of the field-of-view region is enlarged to the size of the display image at the magnification factor while being subjected to high-resolution processing by first high-resolution processing. When the magnification factor is equal to or less than the predetermined value, the X-ray image of the field-of-view region is enlarged to the size of the display image at the magnification factor while being subjected to high-resolution processing by second high-resolution processing having a shorter processing time than the first high-resolution processing.SELECTED DRAWING: Figure 2

An X-ray fluoroscopic imaging apparatus includes: a C-arm 17 that is rotatable, and supports an X-ray tube 13 and an X-ray detector 15 such that the X-ray tube 13 and the X-ray detector 15 are opposite to each other; an image generator 43 that generates X-ray images L using detection signals of the X-ray detector 15; and an image display device 11 that displays the X-ray images L. The image display device 11 includes: an image display unit 49 that can display information display images D in a row and a column in a matrix; an input unit 51 that inputs an instruction to change a position at which image information K is displayed in each of the information display images D such that at least two of the X-ray images L are displayed adjacently in the respective information display images D; and an image display control unit 57 that causes the image display unit 49 to display the X-ray images L adjacently based on a content of the instruction.

The application discloses an IC chip package detection method for realizing system-level package and 3D package, and relates to the technical field of chip package detection, and comprises the following steps: vertically stacking a plurality of DRAM core particles on a basic logic core particle provided with a micro-bump array on a surface through a through silicon via, and activating a self-detection circuit to obtain a suspicious area coordinate list; dividing area risk levels and generating a differentiated scanning parameter set through a targeted scanning scheduling algorithm; controlling an external X-ray source to collect multi-spectral projection data according to the differentiated scanning parameter set for each suspicious area; performing three-dimensional reconstruction on a plurality of sets of multi-spectral projection data by using an enhanced reconstruction model embedded with physical prior knowledge to obtain enhanced three-dimensional body data; and performing automatic defect identification on the enhanced three-dimensional body data, and outputting the identified defects as detection results. The application aims to solve the problems of perspective imaging difficulty and insufficient resolution of internal defects of high-density 3D stacked chips.

To provide a target site selection, entry and update with automatic remote image annotation.SOLUTION: Fluoroscopic imaging of a patient's heart is performed by positioning a patient in a sterile field and imaging the heart using an x-ray fluoroscopy system within the sterile field to produce a two-dimensional image. The two-dimensional image is simultaneously displayed on an operative display within or adjacent the sterile field and on a display of a remote image processor outside the operative field. The two-dimensional image of the remote display is manually marked or annotated to show anatomical or treatment information which is simultaneously shown on the operative display. Alternatively, a patient's heart is imaged using a catheter to produce a real time image. The image is presented on a screen and sent to an image processor. Treatment parameters are input to the image processor, and the image processor calculates locations of a plurality of target treatment sites which are displayed on the screen.SELECTED DRAWING: None

The invention relates to the technical field of industrial CT (Computed Tomography), in particular to a conformal track generation method for CT scanning of a flat object, which comprises the following steps of: for the flat object to be scanned, respectively carrying out perspective imaging on the main plane and the side surface of the flat object, and calculating to obtain the space size of the object; frame-selecting a to-be-scanned region of interest on a computer interface through user interaction, and calculating the spatial size of the region of interest by using an image geometrical relationship; on the basis of the space size of the object and the space size of the region of interest, generating a conformal track suitable for CT scanning through a space geometric constraint relation; the spatial geometric constraint relationship includes that the scanned object cannot collide with the radiation source and the detector, and the region of interest is always kept in the projection image in the rotation process and cannot be cut off. According to the method, the spatial sizes of the flat object and the region of interest are accurately obtained, the conformal trajectory is automatically generated through the spatial geometric constraint relation, and the scanning efficiency and the reconstruction precision are remarkably improved.

The invention relates to the technical field of vehicle-mounted electronic equipment calibration, in particular to an AR-HUD high-precision calibration method and system, a storage medium and a product, and the method comprises the steps: building a head-up display calibration environment, and installing a camera; lightening the vehicle-mounted head-up display; acquiring the position of a feature light spot in the head-up display in a vehicle coordinate system; solving a geometric perspective projection relation of the head-up display; verifying the calibration result of the vehicle-mounted head-up display; the method comprises the following steps: completing calibration of the vehicle-mounted head-up display, focusing on establishing a geometric perspective projection relationship between two-dimensional optical pixel points and three-dimensional projection imaging points under a vehicle coordinate system, establishing a multi-point perspective imaging model of the vehicle-mounted head-up display, and realizing high-precision calibration of the vehicle-mounted head-up display. The vehicle-mounted head-up display realizes a self-closed loop through a multi-point perspective imaging model, provides a conversion interface of three-dimensional points and two-dimensional optical pixel points, and shares data information with other sensors to realize combined control; and the industrial camera assists in realizing automatic calibration of the vehicle-mounted head-up display, so that the efficiency of the calibration process is improved.

An X-ray CT device of an embodiment includes processing circuitry. The processing circuitry acquires data corresponding to energy when X-rays radiated by an X-ray tube are transmitted through a subject. The processing circuitry adjusts conditions including first and second conditions for the data when the data is acquired. The processing circuitry switches the condition between the first condition and the second condition during a fluoroscopic imaging manipulation performed by radiating the X-rays to the subject. The processing circuitry bundles the data discriminated into some of a plurality of energy bins.

Example systems, devices, and techniques are described for lesion characterization. An example medical system includes one or more memories configured to store one or more memories configured to store fluoroscopy imaging data of a patient and processing circuitry communicatively coupled to the memory. The processing circuitry is configured to obtain the fluoroscopy imaging data, the fluoroscopy imaging data including imaging data of one or more calibration artifacts. The processing circuitry is configured to execute one or more machine learning models to determine, based on the imaging data of the one or more calibration artifacts, a calibration factor. The processing circuitry is configured to apply the calibration factor to the fluoroscopy imaging data and output a representation of the fluoroscopy imaging data based on the application of the calibration factor to the fluoroscopy imaging data.

An X-ray fluoroscopic imaging apparatus (100) includes a table (2), a table operation unit (51), and a controller (31). The controller is configured or programmed to move the table based on an operation input to the table operation unit in a first control performed when movement of the table is not prohibited, and move a center (42a) of an X-ray irradiation field (42) of an X-ray image (41) on a display (40) without moving the table based on the operation input to the table operation unit in a second control performed when the movement of the table is prohibited.

A mobile radiolucent table system configurable for medical imaging includes a table pedestal comprising a table base portion and a table support mounted to the table base portion; a platform supported by the table support; a frame translatably mounted to the platform and configured for positioning a patient; and an actuator configured to linearly translate the frame relative to the platform between a fully extended configuration and a fully retracted configuration, wherein in the fully extended configuration, a front edge of the frame projects from the platform at least 1 meter past a front edge of the platform and a front edge of the table base portion, wherein the fully extended configuration is configured for medical imaging.

This invention relates to an artificial valve delivery device and system. The device includes a balloon catheter, a bend-controlled outer tube, and a proximal handle. The balloon catheter includes a balloon body, a first stop, and at least two alignment imaging elements. The first stop is located at the distal end of the balloon body and is used to limit the compression of the artificial valve. The alignment imaging elements are located on the first stop, and multiple alignment imaging elements are distributed circumferentially. At least some of the alignment imaging elements differ in at least one of axial length, shape, or circumferential position, for forming orientation identification features under fluoroscopic imaging. The proximal end of the balloon catheter is provided with an external marker including multiple circumferentially distributed alignment marks, which correspond to the alignment imaging elements. The bend-controlled outer tube is sleeved outside the balloon catheter and includes a bendable adjustment section. The proximal handle is connected to the proximal ends of the balloon catheter and the bend-controlled outer tube and includes a bending control mechanism and a position adjustment mechanism.

The embodiment of the invention discloses a probe testing device and a probe testing method. The probe testing device comprises a bottom plate on which a first testing surface is formed; the base is mounted on the top surface of the bottom plate; the sliding block is arranged on the base in a sliding mode in the vertical direction, the bottom face of the sliding block is provided with a connecting part used for being connected with a probe card, the bottom face of the sliding block is provided with a second testing face opposite to the first testing face in the vertical direction, and the second testing face is used for abutting against the probe tail of the probe card; the adjusting part is mounted on the base; provided is a perspective imaging device. According to the embodiment of the invention, through the cooperation of the adjusting part and the locking structure, the position of the sliding block can be fixed after the sliding block is adjusted to the set height, and at the moment, image acquisition of perspective imaging equipment is matched, so that a real-time deformation image of the probe compressed to a set state can be obtained; the material and the structure of the probe are analyzed and optimized by recording the deformation image, so that the method is more reliable and effective.

A radiopaque structure, a stent and a thrombectomy system are disclosed. The radiopaque structure includes: at least one protrusion each for securing, supporting and connecting a radiopaque sleeve (2); at least one radiopaque sleeve (2) disposed over the respective at least one protrusion; and at least one filler (3) filled in a gap between the radiopaque sleeve (2) and the protrusion. Compared with the prior art, the radiopaque mechanism can enhance fluoroscopic visibility of radiopaque dots disposed at a distal end of a laser-cut thrombectomy device and solves the problem that not all metal struts in the laser-cut thrombectomy device can be seen under fluoroscopic imaging. The radiopaque structure can be used in any types of stent and is not limited to being used in a thrombectomy device.

An example medical system includes one or more memories configured to store fluoroscopy imaging data of a patient of a plurality of vessel locations. For each of the plurality of vessel locations, the fluoroscopy imaging data includes at least three images. Each of the at least three images are captured from an angle different from a capture angle of each other of the at least three images. The system includes processing circuitry configured to obtain the fluoroscopy imaging data. The processing circuitry is configured to execute one or more machine learning models to determine, based on the fluoroscopy imaging data, a three-dimensional (3D) characteristic of a lesion, a 3D lesion volume, and 3D spatial information. The processing circuitry is configured to output a 3D visualization of the plurality of vessel locations including a visualization of the lesion.

Imaging systems and methods estimate poses of a fluoroscopic imaging device, which may be used to reconstruct 3D volumetric data of a target area, based on a sequence of fluoroscopic images of a medical device or points, e.g., radiopaque markers, on the medical device captured by performing a fluoroscopic sweep. The systems and methods may identify and track the points along a length of the medical device appearing in the captured fluoroscopic images. The 3D coordinates of the points may be obtained, for example, from electromagnetic sensors or by performing a structure from motion method on the captured fluoroscopic images. In other aspects, a 3D shape of the catheter is determined, then the angle at which the 3D catheter projects onto the 2D catheter in each captured fluoroscopic image is found.

A computer-assisted medical system comprises a fluoroscopic imager having a full scan range in a surgical coordinate space. The system further comprises one or more processors configured to perform a method. The method includes receiving a first fluoroscopic image data set of a patient anatomy. The first fluoroscopic image data set is obtained from the full scan range of the fluoroscopic imager. The method further includes receiving at least one additional fluoroscopic image data set of the patient anatomy from the fluoroscopic imager operating in a constrained range substantially smaller than the full scan range. The method further includes constructing a first planar tomographic image from the first and at least one additional fluoroscopic image data sets.

A system and method for performing a dual energy subtraction imaging process on a fixed or mobile fluoroscopy imaging system for pulmonary imaging applications is provided. The dual energy subtraction image processing system includes a processor configured to operate a radiation source of a fluoroscopy imaging system in a pulsed manner to obtain a number of high energy (HE) frames, to form an HE image from the number of HE frames, to operate the radiation source of the fluoroscopy imaging system in a continuous manner to obtain a number of low energy (LE) frames, to form an LE image from the LE frames, and to employ the HE image and the LE image in a dual energy subtraction imaging process to output a number of enhanced contrast images. The processor is also configured to operate the detector in continuous manner to obtain the HE frames and the LE frames.

The invention provides a nuclear power plant vehicle channel integrated security check method which can be applied to the technical field of security check. The method comprises the following steps: performing permission verification on license plate information and driver information of a target vehicle, and starting a security check program for the target vehicle under the condition that a permission verification result represents that the license plate information and the driver information pass; performing real-time nuclear radiation detection on the target vehicle, and starting a scanning operation on the target vehicle under the condition that a nuclear radiation detection value is represented in a safety value range; in response to the scanning operation, scanning the whole chassis of the target vehicle to obtain a vehicle bottom scanning image; performing multi-dimensional perspective imaging and back scattering imaging on the target vehicle to obtain a perspective image and a back scattering image; and carrying out abnormal object entrainment analysis on the target vehicle based on the vehicle bottom scanning image, the perspective image and the back scattering image, and ending a safety inspection program of the target vehicle under the condition that an analysis result represents that the target vehicle does not entrain an abnormal object. The invention also provides an integrated security check system of the nuclear power plant.

A handheld target visual coordinate measurement method, system and medium based on phase characteristics, the measurement method is: based on three frequency superimposed phase target feature points, three-step phase shift images are obtained by acquiring RGB three-channel images with a binocular camera, and a calibrated phase-height model is combined to realize three-dimensional reconstruction of a single area array feature circular / elliptical cone, since feature imaging is a one-to-one mapping relationship, the image feature set can be effectively avoided in the binocular camera perspective imaging process, the application also includes a system for executing the method, and a medium for storing the method; the method can improve the measurement efficiency, reduce the feature point extraction error, increase the measurement field of view, solve the influence of the imaging system defocus on the target feature point extraction, and realize the online high-precision measurement of the handheld target system.