35 results about "Computed tomography scanner" patented technology

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.

Detectors for computed tomography scanners may include a cathode, a cadmium telluride material, a cadmium zinc telluride material, or a silicon material adjacent to the cathode, and an array of anodes located on a side of the cadmium telluride material, the cadmium zinc telluride material, or the silicon material opposite the cathode, A substrate may be located proximate to the array of anodes, anodes of the array of anodes electrically connected to the substrate. A microelectronic device may be located on a side of the substrate opposite the cadmium telluride material, the cadmium zinc telluride material or the silicon material. The microelectronic device may be electrically connected to the substrate with the microelectronic device mounted to the substrate in a flip-chip orientation. Electrically conductive elements may be located adjacent to the microelectronic device and electrically connected to the substrate.

A device according to the invention for transmitting data between the rotating part and the stationary part of a computed tomography scanner, comprising a waveguide slotted in the longitudinal axis for transmitting high-bit-rate data signals

Device for transmitting data between a rotor (102) and a stator (103) wherein the rotor (102) has at least one data source (4), and wherein the stator (103) comprises at least one data sink (9) for evaluating the data, wherein at least one transmitter (7) and a waveguide (101) fed by the rotor (102) is provided and the transmitter (7) is designed to receive data from the data source (4) and to convert this data into an electromagnetic signal in the split waveguide (101); wherein at least one receiver (8) is provided on the side of the stator (103) which is designed to receive the electromagnetic signal from the split waveguide (101); wherein the receiver (8) is designed to convert the electromagnetic signal for transmission to the data sink (9); and wherein the split waveguide (101) is divided into two parts which are arranged at a small distance from each other around a central axis of rotation and which in cross-section has at least one web (105) extending along the longitudinal direction of the waveguide (101) and parallel to the axis of rotation.

The application provides a sample bin offset determination method and device and a computer tomography scanning equipment. The method comprises the following steps: obtaining a plurality of projection images of the sample bin when the sample bin is located on a preset bed; the plurality of projection images comprise a first projection image, a second projection image and a plurality of third projection images obtained by scanning the sample bin when the scanning equipment is located at a first angle, a second angle and a plurality of third angles, and the angle difference between the first angle and the second angle is 180°; determining a first offset and an offset angle of the sample bin based on the first projection image, the second projection image and the plurality of third projection images; and / or obtaining a plurality of local projection images of the sample bin when the scanning system is located at a preset angle; and determining a second offset of the sample bin based on the plurality of local projection images. The first offset and the second offset can be determined without reconstructing the first projection image, the second projection image and the third projection image, the determination efficiency of the sample bin offset is improved, and the service life of the scanning system is improved.

The invention relates to a method and a system for providing parameter data for a control scan of a computed tomography scanner assembly, the method comprising: receiving object path data comprising at least geometric information about a planned motion path of an object; receiving predefined control scan data comprising at least information about the position and orientation of at least one scan plane of at least one planned control scan for controlling the motion path of the object; receiving an evaluation model configured to provide parameter data for performing at least one control scan in accordance with at least the received object path data and the received control scan data; an evaluation model is applied and parameter data for performing the at least one control scan is provided, at least the object path data and the predefined control scan data being input data to the evaluation model.

The broken lines shown in the drawings illustrate portions of the computed tomography scanner that form no part of the claimed design.

A method of manufacture is provided during which a component is scanned using a computed tomography machine to provide scan data. The component includes a first member and a second member. A first member aperture extends through the first member to the second member. Aperture data is determined for the first member aperture based on the scan data. A center of the scanned geometry is located. An eigen vector is determined for the scanned geometry at the center. An exterior point of intersection between an exterior surface of the second member and an axis is located. The axis is coincident with the center and determined using the eigen vector. A second member aperture is formed in the second member according to a formation operation that aligns the second member aperture being formed with the first member aperture in the first member.

The invention provides a coal pore structure multi-scale quantitative characterization method, which belongs to the field of gas extraction and coal engineering, and comprises the following steps: scanning a preprocessed coal sample by using a scanning electron microscope to obtain a coal sample macroscopic picture; scanning the preprocessed coal sample by using a computed tomography scanner to obtain a micron-sized picture of the coal sample; scanning the pretreated coal sample by using an X-ray scatterometer to obtain a nano-scale picture of the coal sample; extracting macroscopic features of the pore structure of the coal sample from the macroscopic picture of the coal sample; according to the coal sample macroscopic picture and the coal sample micron-order picture, micron-order features of the coal sample pore structure are extracted; and extracting the nano-scale characteristics of the pore structure of the coal sample from the nano-scale picture of the coal sample. According to the method, three different technologies are combined for mutual complementation and verification, quantitative characterization is carried out on the coal pore structure from multiple scales such as macroscopic scale, micron scale and nano scale, and the feature information of the coal pore structure under different scales can be comprehensively and accurately obtained.

During a manufacturing method, a component is scanned with one or more artifacts using a computed tomography machine. The component includes a first member and a second member covering the first member. The first member includes a first member aperture extending through the first member to the second member. Scan data is scaled using known dimensional data for the one or more artifacts to provide scaled scan data. Aperture data is determined for the first member aperture based on the scaled scan data. The aperture data is indicative of a scanned geometry of the first member aperture. A first drilling reference is determined based on the aperture data. A second member aperture is formed in the second member according to a formation operation that aligns the second member aperture being formed with the first member aperture in the first member. The formation operation is determined using the first drilling reference.

The invention relates to a computed tomography device comprising an X-ray source arrangement (1), a detector arrangement (2) and an anti-scatter grating (3), wherein the X-ray source arrangement (1), the detector arrangement (2) and the anti-scatter grating (3) are arranged coaxially to each other and in a ring-like manner in a circumferential direction (100) around an examination area (5), wherein the anti-scatter grating (3) is arranged radially between the examination area (5) and the detector arrangement (2) and comprises X-ray absorbing lamellae (31) extending in the circumferential direction (100), which are spaced apart from each other in an axial direction (300) perpendicular to the circumferential direction (100).

1. Name of the designed product: Computer tomograph. 2. Use of the designed product: The designed product is used for imaging the human body. 3. Design points of the designed product: In shape. 4. Picture or photo best indicating the design points: Perspective view.

A computer-implemented method for providing parameter data for performing at least one control scan with a computed tomography scanner, comprises receiving object path data, the object path data at least comprising geometric information about a planned movement path of an object; receiving predefined control scan data, the predefined control scan data at least comprising information about a position and an orientation of at least one scan plane of at least one planned control scan for controlling the movement path of the object; receiving an evaluation model configured to provide parameter data for performing the at least one control scan at least depending on the object path data and the predefined control scan data; and applying the evaluation model and providing the parameter data for performing the at least one control scan.

The invention discloses a seed expansion model modeling method based on a discrete element method, and the method specifically comprises the steps: scanning the contour of a seed in soil through a three-dimensional X-ray by using an electronic computed tomography scanner, and obtaining the three-dimensional image data of a seed expansion process; three-dimensional image data obtained through scanning are imported into computer software, an original image is preprocessed through the computer software to construct a triangular mesh model of the seeds, and surface smoothing is conducted on the triangular mesh model; extracting volume change data in the seed expansion process from the triangular mesh model after surface smoothing; in discrete element software, a seed expansion motion model is constructed through volume change data; simulation related parameters and an inter-particle interaction model are set, simulation is operated, a simulation result is compared with an actual situation, and closed-loop adjustment of the simulation related parameters is achieved. According to the modeling method of the seed expansion model, the expansion process of the seeds in real soil can be simulated, and the simulation precision is higher.

Systems / techniques that facilitate thermally adaptive scan sequencing for computed tomography scanners are provided. In various embodiments, a system can access a set of scanning protocols performable by a computed tomography scanner. In various aspects, the system can further access a current thermal state of the computed tomography scanner. In various instances, the system can identify, in the set of scanning protocols and based on the current thermal state, a scanning protocol that is predicted to reduce or control thermal stresses experienced by the computed tomography scanner. In various cases, the system can cause the computed tomography scanner to perform the identified scanning protocol.

1. The name of the design product: computer tomography scanner kit. 2. The use of the design product: the product is used for medical scanning imaging. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: assembly state perspective view. 5. Kit description: kit 1 is the computer tomography scanner mainframe, and kit 2 is the computer tomography scanner scanning bed.

The invention relates to a radiological gripping device (1) for a radiological device (50), such as an X-ray device (51), a magnetic resonance tomograph (52), a computed tomograph (53) or a radiation therapy device (54), comprising a stationary device (2) and at least one carrying arm (3) with at least one shaft element (4) and a carrier element (5) pivotably seated on the stationary device. Furthermore, a locking device (6) for locking the carrying arm (3) in at least one locking position (7) is provided. An actuating mechanism (8) is provided for actuating the locking device. A gripping device (9) is also included, which is arranged for fastening to the carrying arm (3) to provide the possibility of gripping for a patient. The shaft element (4) of the carrying arm (3) is pivotably seated on the stationary device (2). The actuating mechanism (8) comprises at least one force direction unit (200), which locks the force transmission in one direction in order to use the operating force transmitted into the flexible pull element (19) for actuating the locking device (6) or to actuate with this force.

The invention relates to a computed tomography scanner comprising a static radiator-detector ring (10) which is composed of an odd number (n) of radiator-detector elements (11, 12, 13, 14, 26), one unique radiator-detector element (26) of which is movable relative to the remaining, jointly describing C-shaped radiator-detector elements (11, 12, 13, 14) such that the radiator-detector ring (10) is opened, wherein each radiator-detector element (11, 12, 13, 14, 26) has an anode system (9) arranged for emitting X-rays which extends over an angle a of at least 0.9 x 360° / n on the circumference of the radiator-detector ring (10) and a detector (4) arranged for detecting X-rays which extends over an angle β of at least 0.95 x 360° / n within the same radiator-detector element (11, 12, 13, 14, 26), and each anode system (9) is part of a radiator system (18) comprising a plurality of electron emitters (5, 25), each of which is designed to produce a focal point (BF ‑ , BF, BF + ) on the anode system (9) in one of at least three selectable positions in cooperation with an electrode system (21).

This application claims a rack assembly and a computed tomography scanner. The rack assembly includes a rotating rack and an imaging assembly mounted on the rotating rack. The imaging assembly includes a correspondingly disposed X-ray source and a detector. The detector is provided with a position adjustment mechanism for adjusting its axial position relative to the rotating rack. When the detector deviates from its position, the position adjustment mechanism is used to adjust the detector's axial position relative to the rotating rack. This allows the detector to be adjusted relative to the X-ray source in the axial direction of the rotating rack, ensuring focal alignment between the X-ray source and the detector in the imaging assembly. This reduces the requirements for the overall dimensional control precision of the rotating rack, thereby reducing costs.

An exemplary focused tomography system and method involve obtaining a computed tomography scan image from a computed tomography scanner, wherein the computed tomography scan is an image of a subject that received a first radiation dosage level when a path of a radiation beam of the computed tomography scanner intersects a region of interest of the subject and that received a second radiation dosage level when the path of the radiation beam did not intersect the region of interest of the subject; computing an additive correction factor based on a radiation dosage factor that is applied to the areas outside the region of interest during computed tomography scanning; and applying the additive correction factor to the computed tomography scan image that improves a quality of the computed tomography scan image that corresponds to areas of the subject that received the second radiation dosage level.

A device for transmitting data between a rotating part and a stationary part of a computed tomography scanner according to the invention has a waveguide slotted in a longitudinal axis for transmitting a high bit rate data signal.

The invention relates to a method and a device for operating a computed tomography scanner. To operate the computed tomography scanner, the detector can be operated in an AOI (area of ​​interest) mode, wherein only a limited number of the available detector pixels within an AOI (area of ​​interest) are read out, and wherein a higher frame rate is set compared to reading out all available detector pixels.

Detectors for computed tomography scanners may include a cathode, a cadmium telluride material, a cadmium zinc telluride material, or a silicon material adjacent to the cathode, and an array of anodes located on a side of the cadmium telluride material, the cadmium zinc telluride material, or the silicon material opposite the cathode, A substrate may be located proximate to the array of anodes, anodes of the array of anodes electrically connected to the substrate. A microelectronic device may be located on a side of the substrate opposite the cadmium telluride material, the cadmium zinc telluride material or the silicon material. The microelectronic device may be electrically connected to the substrate with the microelectronic device mounted to the substrate in a flip-chip orientation. Electrically conductive elements may be located adjacent to the microelectronic device and electrically connected to the substrate.

Provided is a substrate used in an X-ray detector for a computed tomography device, said substrate comprising: a ceramic insulating substrate that has a first surface and a second surface; a first via conductor that is positioned inside the insulating substrate and that extends to the first surface; and a first pad that is electrically connected to the first via conductor. The first via conductor and the first pad have different types of metal as the main components thereof. The first pad includes a first glass material, and is directly bonded to the first surface.

Systems / techniques that facilitate generation of image denoising training data via photon-count splitting are provided. In various embodiments, a system can access a set of sinograms generated by a photon-counting computed tomography scanner. In various aspects, the system can split the set of sinograms into a first reduced-photon-count set of sinograms and a second reduced-photon-count set of sinograms. In various instances, the system can convert, via image reconstruction, the first reduced-photon-count set of sinograms into at least one training input image and the second reduced-photon-count set of sinograms into at least one training output image. In various cases, the system can train a deep learning neural network based on the at least one training input image and the at least one training output image.