Multiple single axis servo drives with a dedicated inter-drive network

    公开(公告)号:US11347202B2

    公开(公告)日:2022-05-31

    申请号:US16011817

    申请日:2018-06-19

    发明人: Stephen Glow

    摘要: A servo control module for a motion control system with a plurality of individual servo control modules. The servo control module includes a single axis servo drive. The servo control module further includes a set of input pins configured to receive motor state information of motors controlled by single axis servo drives of all of the other of the plurality of servo control modules over a dedicated inter-drive network each servo update cycle. The servo control module further includes a set of output pins configured to transmit the motor state information of a motor controlled by the single axis servo drive and the received state information over the inter-drive network of motors each servo update cycle.

    SCANNING SYSTEMS WITH DYNAMICALLY ADJUSTABLE SHIELDING SYSTEMS AND RELATED METHODS

    公开(公告)号:US20210405242A1

    公开(公告)日:2021-12-30

    申请号:US17342065

    申请日:2021-06-08

    IPC分类号: G01V5/00 G01N23/04

    摘要: Scanning systems may include a stator, a rotor supporting at least one radiation source and at least one radiation detector rotatable with the rotor, and a motivator operatively connected to the rotor. The stator, the rotor, the at least one radiation source, and the at least one radiation detector may be located within a housing. A conveyor system may extend through the housing and the rotor. A shielding system including a series of independently movable energy shields sized, shaped, and positioned to at least partially occlude a pathway along which the conveyor system extends may extend from an entrance to the housing, through the rotor, to an exit from the housing. A control system may be configured to cause the shielding system to automatically and dynamically move individual energy shields in response to advancement of one or more objects supported on the conveyor system.

    ROTATING STRUCTURE FOR RADIATION IMAGING MODALITIES

    公开(公告)号:US20210353237A1

    公开(公告)日:2021-11-18

    申请号:US17354951

    申请日:2021-06-22

    摘要: Among other things, a computed tomography (CT) imaging modality is provided. The imaging modality includes a radiation source that emits radiation. The imaging modality includes a detector array that detects at least a portion of the radiation. The imaging modality includes a rotating structure that rotates about an axis. The rotating structure includes a first support portion having a first shape. The rotating structure includes a second support portion having a second shape different than the first shape. The radiation source and the detector array are mounted to the second support portion.

    Anti-scatter collimator for radiation imaging modalities

    公开(公告)号:US11129581B2

    公开(公告)日:2021-09-28

    申请号:US16485764

    申请日:2017-02-16

    摘要: Among other things, an anti-scatter collimator is provided including a first layer defining a first retaining member at a first surface. A second layer defines a second retaining member at a first surface that faces the first surface of the first layer. A septum is disposed between the first layer and the second layer and physically contacts the first retaining member and the second retaining member. The first retaining member and the second retaining member maintain a position of the septum relative to the first layer and the second layer. The septum has a third attenuation coefficient that is greater than a first attenuation coefficient of the first layer and a second attenuation coefficient of the second layer. An end support is attached to the first layer and to the second layer. The end support borders an end of the septum.

    Item classification using localized CT value distribution analysis

    公开(公告)号:US11087468B2

    公开(公告)日:2021-08-10

    申请号:US16342474

    申请日:2016-10-19

    摘要: Among other things, one or more systems and/or techniques for classifying an item disposed within an object are provided herein. A three-dimensional image of the object (e.g., a bag) is segmented into a set of item representations (e.g., laptop, thermos, etc.). An item is identified from the set of item representations based upon item features of the item, such as the laptop that could be used to conceal an item of interest such as an explosive. A region comprising a three-dimensional image of the item is divided into a set of sub-regions (e.g., a first sub-region encompassing a screen, a second sub-region encompassing a motherboard, etc.). The item is classified as a potential first type of item (e.g., an explosive laptop) when any sub-region has a number of voxels, with computed tomography (CT) values within a range of known CT values for a first type of item, exceeding a threshold.

    Pre-object filter for shaping profile of radiation attenuation in fan-angle direction

    公开(公告)号:US11083422B2

    公开(公告)日:2021-08-10

    申请号:US16384208

    申请日:2019-04-15

    摘要: Among other things, one or more systems and/or techniques are described for shaping a profile of radiation attenuation in a fan-angle direction via a pre-object filter (e.g., a bowtie filter) based upon a profile of an object. For example, a pre-object filter may be at least partially rotated about a filter axis and/or may be translated in a direction parallel to a direction of conveyance of the object under examination to adjust a profile of radiation attenuation in the fan-angle direction. Further, in one embodiment, the profile of radiation attenuation may be reshaped during rotation of the radiation source about the object to adjust an amount of radiation attenuation in the fan-angle direction (e.g., to adjust a profile of radiation attenuation as a shape of the object changes from a perspective of a radiation source as the radiation source is rotated about the object).

    Scanning systems with dynamically adjustable shielding systems and related methods

    公开(公告)号:US11029441B2

    公开(公告)日:2021-06-08

    申请号:US16422709

    申请日:2019-05-24

    IPC分类号: G01N23/04 G01V5/00

    摘要: Scanning systems may include a stator, a rotor supporting at least one radiation source and at least one radiation detector rotatable with the rotor, and a motivator operatively connected to the rotor. The stator, the rotor, the at least one radiation source, and the at least one radiation detector may be located within a housing. A conveyor system may extend through the housing and the rotor. A shielding system including a series of independently movable energy shields sized, shaped, and positioned to at least partially occlude a pathway along which the conveyor system extends may extend from an entrance to the housing, through the rotor, to an exit from the housing. A control system may be configured to cause the shielding system to automatically and dynamically move individual energy shields in response to advancement of one or more objects supported on the conveyor system.

    SCANNING SYSTEMS CONFIGURED TO INSPECT CONVEYED OBJECTS AND RELATED SYSTEMS AND METHODS

    公开(公告)号:US20200253576A1

    公开(公告)日:2020-08-13

    申请号:US16275103

    申请日:2019-02-13

    发明人: Steven N. Urchuk

    IPC分类号: A61B6/00

    摘要: Scanning systems for performing computed tomography scanning may include a stator, a rotor supporting at least one radiation source and at least one radiation detector rotatable with the rotor, and a rotator operatively connected to the rotor to rotate the rotor relative to the stator. A conveyor system may include a respective conveyor extending through the rotor of the scanning system. A control system operatively connected to the scanning system and the conveyor system may be configured to automatically and dynamically increase a rate at which the rotor moves, decrease a rate at which the respective conveyor moves, and/or adjust other system parameters when the control system enters a finer pitch mode and to automatically and dynamically decrease a rate at which the rotor moves, increase a rate at which the respective conveyor moves, and/or adjust other system parameters when the control system enters a coarser pitch mode.

    Combined image generation of article under examination and image of test item

    公开(公告)号:US10697903B2

    公开(公告)日:2020-06-30

    申请号:US16543261

    申请日:2019-08-16

    摘要: Among other things, one or more techniques and/or systems for generating a three-dimensional combined image is provided. A three-dimensional test image of a test item is combined with a three-dimensional article image of an article that is undergoing a radiation examination to generate the three-dimensional combined image. A first selection region of the three-dimensional article image is selected. The three-dimensional test image of the test item is inserted within the first selection region. Although the test item is not actually comprised within the article under examination, the three-dimensional combined image is intended to cause the test item to appear to be comprised within the article.

    AUTOMATED PHASE SELECTION FOR ECG-GATED CARDIAC AXIAL CT SCANS

    公开(公告)号:US20200170587A1

    公开(公告)日:2020-06-04

    申请号:US16780751

    申请日:2020-02-03

    IPC分类号: A61B6/03 A61B6/00 G06T11/00

    摘要: Provided are one or more systems and/or techniques for mitigating motion artifacts in a computed tomography image of an anatomical object. Extended scan data is received and includes projections and backprojections acquired for parallel rays emitted by a radiation source at different angular locations within a first range of source angles. The projections and the backprojections are compared to identify differences between the projections and the backprojections at the different angular locations. Movement of the anatomical object during acquisition of the extended scan data at the different angular locations is quantified, and short scan data is identified. The short set includes a subset of the extended scan data acquired at different locations within a second range of source angles where the quantified movement of the anatomical object is less than a movement threshold. The computed tomography image of the anatomical object is reconstructed from the short scan data.