73 results about "Ct scanners" patented technology

The invention discloses a copper wire tinning method for tinned copper stranded wire production, which relates to the technical field of metal surface treatment, and comprises the following steps: releasing a copper wire to an ionic liquid electrophoresis tank, applying an electric field to strip surface oxides, and then carrying out three-stage countercurrent rinsing to generate a clean copper wire; putting the clean copper wire into a composite plating tank, monitoring the tin liquid viscosity and the copper wire linear speed in real time, calculating the magnetic field gradient, and controlling tin crystal oriented growth according to the magnetic field gradient to generate an oriented crystallization tinned copper wire; the surface temperature of the directionally crystallized tinned copper wire is monitored in real time and compared with a preset temperature threshold value, a temperature permission trigger signal is generated, the annular array spray gun is triggered to work according to the temperature permission trigger signal, and a densified tinned copper wire is generated; and the densified tinned copper wire is scanned through a micro-focus CT scanner, a gap three-dimensional point cloud picture is generated, the gap size and the normal angle of the gap three-dimensional point cloud picture are analyzed, the optimal spraying parameters are recognized, and the passivation film tinned copper wire is generated.

The utility model discloses a CT (computed tomography) device capable of adjusting irradiation measurement according to local weight distribution. The CT device comprises a scanning bed and a scanning device. The scanning bed comprises a bed frame and a bed board, and the bed board is slidably connected to the bed frame and can go deep into and out of the scanning cavity of the scanning device in the Z direction. The bed frame is designed to be of a supporting, lifting and telescopic structure for the bed board. The bed plate comprises a supporting plate and a sensor layer, and the supporting plate is designed to be of a supporting structure of the bed plate and is slidably connected with the bed frame. The sensor layer comprises a base layer, a plurality of pressure sensors and a sensor interface, the base layer is designed as a supporting and insulating structure of the pressure sensors, the plurality of pressure sensors are distributed on the base layer in an array shape, each pressure sensor is connected to the sensor interface through a flat cable, and the flat cable is arranged along the base layer. According to the CT equipment provided by the utility model, the pressure distribution data of the scanned object on the scanning bed is obtained through the pressure sensor arranged on the scanning bed, and the irradiation dose of each scanned fault is optimized according to the weight distribution characteristics.

The computed tomography (CT) scanner gantry rotates relative to the fixed substrate of the CT scanner. During gantry rotation, digital data is transmitted from a data source via a modulator, transmission channel, and demodulator to a data receiver between the gantry and the substrate. A predistortion device located upstream of the transmission channel predistorts the transmitted signal generated by the modulator from the data source through modulation according to a predistortion rule. Only the predistorted transmitted signal is transmitted to the transmission channel. Alternatively or additionally, a postdistortion device located downstream of the transmission channel postdistorts the signal transmitted via the transmission channel according to a postdistortion rule, and only the postdistorted signal is transmitted to the demodulator. The predistortion rule and / or postdistortion rule are repeatedly reset by a setting device during gantry rotation.

The present invention relates to an image processing apparatus, method, and program that reduce the difference in image quality between high-absorbent regions and adjacent regions in a tomographic image. [Solution] The system includes a processor, which identifies high-absorbent regions in a projection image obtained by imaging a subject containing high-absorbent materials using a CT scanner, and derives a corrected projection image by performing a correction on the high-absorbent regions in the projection image to suppress the image quality difference between the high-absorbent regions and other regions other than the high-absorbent regions.

This invention relates to a bone mineral density measurement system and method. The system includes a CT scanner with a quantitative computed tomography (QCT) module, an independent single-calibration phantom, and a QCT data image processing program. The devices can exchange data via network or mobile storage. The data receiving module of the QCT data image processing program receives medical digital images from the CT scanner and measures the patient's bone mineral density through the bone mineral density analysis module. This invention combines a CT scanner, QCT, and a single-calibration phantom, employing an asynchronous scanning method that separates the phantom and the patient. This results in higher measurement accuracy, greater convenience, and improved patient comfort.

1. Name of the product in this design: Cone-beam CT scanner (SAXG1010A). 2. Intended use of this design: for dental medical applications. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The utility model provides a structure of a CT scanning device, and relates to the technical field of CT scanning, the structure comprises a CT scanner and a multi-axis mechanical arm connected with the CT scanner, the CT scanner is driven by the multi-axis mechanical arm to move so as to adjust a scanning path according to the body type of a patient, the structure further comprises a supporting mechanism, the supporting mechanism is used for supporting the patient, and the supporting mechanism is used for supporting the patient. And a fan is mounted on the CT scanner. Through the arrangement of the CT scanner and the multi-axis mechanical arm, the CT scanner is driven by the multi-axis mechanical arm to move, so that the CT scanner can adjust the scanning path according to the body type of the patient, the scanning effect on the patient is improved, and the scanning flexibility and adaptability are greatly improved; and the conditions of image distortion or key information omission caused by improper scanning paths are reduced.

The application discloses a CT dose self-adaptive optimization system and method thereof, and belongs to the technical field of medical images, which comprises a CT scanner, an image data processing workstation, a high-risk population analysis device, a dose parameter self-adaptive optimization device, a dose parameter automatic adjustment device and an intelligent learning unit, and based on the theory of information geometry, the dose parameter optimization problem is promoted from the Euclidean space to the Riemannian manifold space, the dose parameter manifold and the image quality manifold are constructed, the geodesic line is calculated on the manifold through the Fisher information matrix as the Riemannian metric, and the optimal dose path is found. The system adopts a double-manifold collaborative optimization mechanism, establishes a mapping relationship between the two manifolds, and realizes accurate optimization of parameters in combination with a geometric-guided genetic algorithm, and through pre-scanning, high-risk population analysis, information geometry optimization and automatic parameter adjustment, individualized dose control is realized, the radiation dose is additionally reduced by 30-45% compared with a traditional method, the image quality is maintained or improved, and the safety of CT examination is remarkably improved.

The invention discloses a method for measuring the position degree of a pocket of a plastic retainer based on a CT (Computed Tomography) sensor, relates to the technical field of measurement of the pocket of the plastic retainer, and aims to solve the problems that a traditional measurement means is limited by the characteristics of a non-metal material and is easy to deform after being clamped in a three-coordinate measurement process, so that the measurement is inaccurate, and nondestructive accurate detection is difficult to realize. The method comprises the following steps that 1, a plastic retainer is placed in polystyrene foam to be fixed, and a fixing base material and the plastic retainer are placed in the center of a rotary table of a CT scanner; 2, a filter disc is placed on a collimation partition plate filter disc support at the front end of rays of the CT scanner, and the filter disc is a copper filter disc; and step 3, setting the voltage of the CT scanner to be 150-210 KV, the current to be 290-380 [mu] A, the exposure time to be 420-570 ms and the gain to be 8.0. The method is used for measuring the position degree of the pocket of the plastic retainer.

To improve image quality.SOLUTION: An X-ray CT device according to the embodiment includes: an X-ray irradiation unit; a photon count detector; an acquisition unit; an estimation unit; and a calculation unit. The X-ray irradiation unit executes a first scan and a second scan. The photon count detector detects a signal related to the first scan and the second scan. The acquisition unit acquires a count of an energy bin detected by the photon count detector. The estimation unit estimates an energy bin response function which depends on the energy based on the count of the first scan, and estimates a pileup correction term per current intensity of the second scan based on the count of the second scan and the energy bin response function. The calculation unit performs a substance discrimination.SELECTED DRAWING: Figure 1

In an X-ray CT scanner capable of imaging subjects in both supine and standing positions, the calculated output dose should be adjusted to a value appropriate to the condition of the stand. [Solution] The information processing device according to this embodiment comprises a specification unit, a determination unit, and a calculation unit. The specification unit identifies a stand state information that represents the state of the stand, which includes at least one of posture information that represents the posture of the stand having an opening and object information that represents objects other than the subject present in the opening. The determination unit determines dose parameters to be used to calculate the output dose based on the identified stand state information and parameter information that stores dose parameters for calculating the output dose output by the device in association with the stand state information. The calculation unit calculates the output dose using the determined dose parameters.

This specification provides a multi-contrast agent combined scanning control system and method, relating to the field of medical device technology. The method includes: after delivering a current contrast agent from a syringe based on a current delivery command, monitoring the contrast agent concentration at a preset monitoring layer to obtain the current CT value; if the current CT value meets a preset trigger condition, generating a next delivery command and sending the next delivery command to the syringe; using the next delivery command as a new current delivery command, and using the next contrast agent to be delivered as a new current contrast agent, repeating the above steps; if the CT value of the target site corresponding to the last delivered contrast agent meets the trigger condition, generating a scanning command to initiate a diagnostic scan, thereby controlling the CT scanner to perform a diagnostic scan and acquire scanning data from multiple target sites. In this way, the amount of diagnostic image information can be increased while reducing the amount of contrast agent used and minimizing radiation.

To raise awareness of the risk of interference between the camera bed and the mount when changing shooting modes. [Solution] The X-ray CT apparatus according to the embodiment comprises a stand, a patient table, a moving mechanism, and a control unit. The stand has a scanner and a stand. The moving mechanism moves at least one of the stand and the patient table along the direction of movement. The control unit performs one of the following: a first control that tilts the scanner and controls the moving mechanism so that the stand and the patient table move apart, based on a first signal that transitions from a first positional relationship of the stand and the patient table when performing a first imaging using the patient table to a second positional relationship of the stand and the patient table when performing a second imaging without the patient table; and a second control that tilts the scanner and controls the moving mechanism so that the stand and the patient table move closer together, based on receiving a second signal that transitions from the second positional relationship to the first positional relationship.

This invention discloses a radial permanent magnet levitation bearing system for a high-speed direct-drive CT scanner, belonging to the field of magnetic levitation bearing technology. The bearing system comprises an inner ring system and an outer ring system similar to rolling bearings, consisting of a stator permanent magnet double semi-ring, a rotor permanent magnet ring, left and right auxiliary mechanical control and protection bearings, and multiple integrated bases. The stator permanent magnet double semi-ring is specially cut and rotated, and is concentrically fitted with the rotor permanent magnet ring with a clearance fit. The auxiliary bearings form a preloaded protection system. Stable levitation by permanent magnet force is achieved through mechanical control, eliminating the need for an electronic control system. The CT scanner motor rotor and stator are fixedly connected to the inner and outer ring systems of the radial permanent magnet levitation bearing, respectively, serving as magnetic levitation support for the CT scanner motor rotor. This bearing system ensures high-speed and stable operation of the CT scanner, increases its operating speed and service life, reduces operating noise, shortens CT examination time, and is suitable for medical and health environments, laying a theoretical foundation for the development of magnetic levitation CT scanners.

To provide a resource allocation system and method for managing the use of local and remote resources for medical image processing tasks.SOLUTION: A simplified medical imaging ecosystem 100 including various networked medical facilities includes a first medical facility 102 and a second medical facility 103 that are operated as part of a medical system 106. The medical facility 102 includes a CT scanner 110, which includes a LCI112 used to process acquired projections to reconstruct CT images, and an MR scanner 120, which includes a LCI122 and processes acquired projections to reconstruct MR images. Medical facility 103 includes a computed tomography (CT) scanner 130 that includes a LCI132 used to process acquired projections to reconstruct CT images and a positron emission tomography (PET) scanner 140 that includes a LCI142 used to process acquired projections to reconstruct PET images.SELECTED DRAWING: Figure 1

The invention discloses a tungsten-rhenium alloy preparation method for controlling the size of a second phase, and belongs to the technical field of medical CT machine anode target material preparation. W-10wt% Re-x Al2O3 precursor powder is synthesized by adopting a wet chemical method, wherein the content of Al2O3 is realized by regulating and controlling the addition amount of aluminum nitrate pentahydrate in the precursor. And the precursor powder is subjected to reduction treatment through a tubular furnace, and alloy powder is obtained. And then, powder densification is achieved through SPS sintering, and then the overall performance of the block is improved through rolling. According to the method, the influence of the content of the second phase (Al2O3) on the alloy performance and the influence of different processes on the size of the second phase are explored, and the purpose is to determine the optimal content interval so as to meet the strict working condition requirement of the medical CT machine target material. According to the method, an effective way for preparing the high-performance W-10wt% Re alloy by combining SPS and second phase introduction is determined through experiments, and the way has the advantages of process simplification and microscopic structure regulation and control.

To efficiently recover abrasion powder.SOLUTION: A wear debris collection device according to the present embodiment includes a dust collection device and an airflow passage. The dust collector has a dust collecting box provided in the vicinity of a brush base plate which is provided in a frame fixing part of the CT apparatus and supports a brush column, and a dust collecting fan communicating with the inside of the dust collecting box. The airflow passage is disposed on the brush base plate such that one end of the airflow passage is connected to the dust collector and the other end of the airflow passage is located near at least one of the brush post and the pin. When the dust collection fan operates, an airflow flowing from the vicinity of at least one of the brush post and the pin into the dust collection box is formed in the airflow passage. According to the present embodiment, by the operation of the dust collection fan, an air flow for moving the abrasion powder from the surface of the brush board into the dust collection box is formed in the vicinity of at least one of the brush column and the pin, and the abrasion powder accumulated in the vicinity of at least one of the brush column and the pin is reduced, so that the risk of short circuit between the W-phase, the V-phase, and the U-phase can be reduced.SELECTED DRAWING: Figure 7

This invention provides a non-destructive testing device and method for nut quality based on a fully automated micro-CT scanner. The method includes: S1, using a transport mechanism to transport the nuts to a rotating platform; S2, keeping the micro-focal spot X-ray source and the flat panel detector stationary, and controlling the rotating platform to rotate intermittently via a PLC controller to achieve full-angle irradiation of the nuts by the micro-focal spot X-ray source; S3, during the intermittent stops of the rotating platform, acquiring planar array images of the nuts from various angles using the flat panel detector to obtain a full-angle planar array image of the nuts, and transmitting it to a computer; S4, the computer performs tomographic reconstruction and image processing based on the full-angle planar array image to obtain the quality trait parameters of the nuts. This invention enables non-destructive testing of nut quality trait parameters through visual recognition technology, significantly improving testing accuracy and efficiency compared to manual trait testing methods and traditional culture methods for detecting mold infection.

A system for combining a plurality of scans in a computed tomography (CT) imaging workflow, the system comprising: a protocol selection module configured to select two or more scan protocols for a patient; a scan combining module configured to combine scans associated with the selected scan protocol into a combined scan, where the scans are continuous or discontinuous based on the anatomical landmark; and a scan execution module configured to control the CT scanner to perform the combined scan on the patient.

The present application relates to the technical field of deep underground engineering, and more particularly to a deep underground engineering surrounding rock loose circle evolution process visualization method and related equipment. The technical scheme comprises: scanning the rock samples collected on site at different loading stages by a CT scanner to obtain CT scan images, arranging monitoring sections and monitoring points on site of the deep underground engineering, installing displacement, stress and strain sensors, and obtaining surrounding rock information using borehole camera technology; using a finite element software to establish a numerical model of the deep underground engineering, selecting a viscoelastic plastic constitutive model considering rock damage and rheological properties, assigning model parameters according to the CT scan images and rock mechanics test results, and correcting the numerical simulation data by parameter inversion to obtain corrected numerical simulation data. The present application obtains reliable surrounding rock information by comprehensively using various data acquisition means, and uses the viscoelastic plastic constitutive model considering rock damage and rheological properties to improve the accuracy of the numerical simulation results.

X-ray CT scanner with: a rotating device (3) with an X-ray generator (1) and an X-ray detector (2) which are opposite each other and which are arranged so that an object (O) can be inserted between them; a rotation mechanism for rotating the rotation device (3) about a rotation axis (3a); a movement mechanism (31) for moving the rotating device (3) in a plane that intersects the axis of rotation (3a); and a control device which is designed to control the rotation mechanism and the movement mechanism (31) in such a way that a combined movement of the rotation device (3) is performed during the taking of X-ray images; wherein the combined motion of the rotating device (3) is a combination of a motion of the rotating mechanism controlled by the control device with a motion by the motion mechanism (31) controlled by the control device; wherein, during the movement of the rotating device (3) by the motion mechanism (31) controlled by the control device, the axis of rotation (3a) is arranged such that it is moved along a circular path (LC1, LC2, LC3) whose center lies in a center (3X) of an area of ​​interest in the object (O), such that the axis of rotation (3a) and the center (3X) of the area of ​​interest in the object (O) are kept at a constant distance from each other.

The invention relates to the technical field of emergency care, in particular to an ambulance device for loading and unloading a vehicle-mounted CT machine and a hyperbaric oxygen chamber, which comprises a bottom plate, a side plate, a sliding plate base, a sliding plate and a moving plate, the side plates, the sliding plate bases and the sliding plates are symmetrically arranged. According to each set of system, the sliding base and the sliding plate slide out by a certain distance through cooperation of the pushing plate and the spring, then the sliding base continues to move through cooperation of the pushing plate and the spring, and a door is opened through lead screw transmission, chain wheel and chain transmission and gear and rack transmission; a motor is used for driving a spline shaft for transmission, and a chain, a chain wheel, a gear and a rack are matched to enable a moving plate to move and transport instruments, so that the ambulance can load and unload a vehicle-mounted CT machine and a hyperbaric oxygen chamber at any time.

This invention provides a lung bulla volume reduction system and its control method. The piston inside the syringe is fixedly connected to the plunger. The second end of the suction line is connected to the connector at the front end of the syringe. The first end of the suction line is connected to the outlet end of a first one-way valve and the second end of an exhaust line, respectively. The first end of the exhaust line is connected to the inlet end of a second one-way valve. The second end of an extension tube is connected to a pressure detection module and the inlet end of the first one-way valve, respectively. The first end of the extension tube is connected to a puncture needle. The suction subsystem is connected to a CT scanner, a pressure detection module, and the second end of the plunger. The suction subsystem can control the movement state of the plunger based on preset information, CT image data acquired by the CT scanner, the force sensor detecting the force on the plunger, and the pressure data detected by the pressure detection module. This reduces the operational difficulty of lung bulla volume reduction and helps ensure the timeliness of lung bulla volume reduction, the accuracy of volume reduction control, and the standardization of surgery.

The invention discloses a method for diagnosing and treating AD (Alzheimer's disease) by recognizing olfactory disorder through PET (Polyethylene Terephthalate). The method comprises the following steps: (1) observing olfactory and cognitive behavioral changes of AD mice, and evaluating olfactory and cognitive function conditions of the 3 * Tg mice by carrying out behavioral experiments on the 12-month-old 3 * Tg mice; and (2) quantifying A beta in the intracranial olfactory related area of the AD mouse through PET imaging, performing A beta-PET imaging on a 12-month-old 3xTg mouse, reconstructing a PET image through a PET / CT scanner, performing SUV quantification on the intracranial olfactory related area, and observing the deposition condition of the A beta in the olfactory related area. And (3) observing A beta and tau phosphorylation expression and distribution conditions of AD mice in pathology, observing A beta expression and distribution conditions in brains of 12-month-old 3xTg mice through immunofluorescence, dividing olfaction-related regions by referring to an Allen mouse brain map, observing expression conditions of A beta in the olfaction-related regions, and calculating average fluorescence intensity of each region for semi-quantitative analysis.

1. Name of the product in this design: CT Cover (Single Source Photon). 2. Purpose of this design: To be used in conjunction with CT scanning equipment for medical personnel to perform CT examinations. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

1. Name of the product in this design: Display screen for CT scanner with a child-friendly graphical user interface for operation and data management. 2. Purpose of this design: For operation and control of the scanning procedure of a children's CT scanner. 3. The key design features of this product are the graphical user interface content on the product screen. 4. The image or photograph that best illustrates the design's key features: the front view. 5. Uses of graphical user interface: for program operation, data display, and data management. 6. Description of the changing states of the graphical user interface: Figure 1 shows the image page of the system starting up and running normally; Figure 2 shows the image page of the patient being exposed during the scan; Figure 3 shows the image interface of the CT scanner bed being unlocked; Figure 4 shows the graphical interface of the CT scanner in emergency stop mode. 7. Other situations requiring explanation: Other explanations: Description of the graphical user interface, as follows: Interface area: The graphical user interface is located in the entire display area of ​​the screen. Human-computer interaction method: The interface state is switched by hardware operation commands of the CT machine (such as starting scanning, emergency stop triggering, etc.). Change process: Initial state: After the main view is completed and the system starts up, the display screen automatically loads the main view 1 and synchronously presents the interface change state diagram 1 (system startup and normal operation page). The interface includes a patient information display area, a device status indicator area and an operation command entry area, which provides the basis for subsequent state switching. Interface change state diagram 1 → Interface change state diagram 2 (exposure scanning state) Triggering condition: Triggered by user through CT machine hardware operation. Switching result: The interface is updated on the layout frame of the main view 1, the device status indicator area changes to "Exposure Scanning" and displays the scanning progress bar, the "Start Scan" button is locked, and the patient information area remains unchanged. Interface change status diagram 2 → Interface change status diagram 3 (scanning bed unlocked status) Trigger condition: After the CT machine completes the exposure scan, the hardware system automatically sends a "scan completed" signal (no additional user operation required). Switching result: The device status indicator area is updated to "Scan completed, scanning bed unlocking" and displays an unlocking progress animation. The "Scanning bed movement" operation buttons are unlocked, while the patient information area continues to display the previous logic. Interface change state diagram 3 → Interface change state diagram 4 (emergency stop state) Trigger condition: During the stage of interface change state diagram 3 (unlocking), the user presses the red "emergency stop button" on the CT machine body, and the hardware system sends an emergency stop signal (highest priority trigger). Switching result: The interface immediately jumps to the warning-only page, retains the patient information, unlocks only the "Reset Emergency Stop" button, and locks all other functions.

Disclosed herein are systems and methods for personalized AI-guided motion-gated coronary CTA scanning. The method may include receiving initial CT data from a CT scanner, generating a four-dimensional (4D) computed tomography (CT) image of the heart of the patient from the initial CT data, identifying mechanical movement of the heart of the patient and an initial timeframe when the myocardium of the heart of the patient is in a target position, and using the mechanical movement of the heart of the patient and the initial timeframe to predict a subsequent timeframe when the heart of the patient will be in the target position. The system may include at least one processor and a memory storing instructions that, when executed by the at least one processor, causes the at least one processor to perform any or all of the method steps, operations, or processes described in the present disclosure.

1. Name of the designed product: main body of medical equipment trajectory reference. 2. Use of the designed product: the whole of the designed product is used as a reference mark or indicator to ensure the alignment between a medical equipment such as an MRI or CT scanner and a target area, and the part of the designed product is used as the main body of the medical equipment trajectory reference. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view. 5. Other circumstances needing explanation: the designed product relates to a partial design, and the part represented by solid lines is the part required to be protected by the partial design.

A CT scanner for performing a brain scan performs a low dose 3D scan with a first field of view. By analyzing the low dose 3D scan, for example using landmark detection, a proposed field of view is obtained for a full dose 3D brain scan. A representation of the proposed field of view is displayed, and a final field of view is generated, as the proposed field of view or an updated version of the proposed field of view provided by a user of the CT scanner.

The invention belongs to but is not limited to the technical field of medicine, and particularly relates to a method and system for constructing a liver cancer radiofrequency ablation short-term curative effect and postoperative recurrence model, a GE Resolution 256-row energy spectrum CT scanner is used for obtaining specific parameters of a focus area, and the correlation between multi-parameter data and liver cancer radiofrequency ablation postoperative short-term curative effect and postoperative recurrence is analyzed; the method comprises the following steps of: delineating a focus, extracting image feature texture information, analyzing the correlation between the image feature texture information and the liver cancer radiofrequency ablation postoperative recurrence rate, and discussing the application value of energy spectrum CT image radiomics in predicting the liver cancer radiofrequency ablation postoperative recurrence; clinical data including age, gender, laboratory examination, pathological types, size and number of lesions are collected and sorted, correlation analysis is carried out on the clinical data and relapse after radiofrequency ablation, and indexes related to relapse of liver cancer patients are screened; in combination with related clinical data and energy spectrum CT image radiomics quantitative characteristics, an optimal postoperative recurrence prediction model is established through an artificial intelligence method, and clinical verification is carried out.