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公开(公告)号：US11864941B2
公开(公告)日：2024-01-09
申请号：US17493005
申请日：2021-10-04
摘要： A method for verifying aperture positions of a pre-patient collimator of a computed tomography (CT) imaging system includes obtaining data collected by an X-ray measurement device having detector elements subjected to X-rays emitted from an X-ray source of the CT imaging system with the pre-patient collimator at an expected aperture position. The method also includes calculating a measured collimator aperture position for the pre-patient collimator based on the obtained data. The method further includes comparing the measured collimator aperture position to a system specification for the expected aperture position for the CT imaging system. The method even further includes generating an output based on the comparison of the measured collimator aperture position to the system specification.
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2.发明公开公开(公告)号：US20240265590A1
公开(公告)日：2024-08-08
申请号：US18106614
申请日：2023-02-07
发明人： Arka Datta , John Moore Boudry , Roy-Arnulf Helge Nilsen , Brian Edward Nett , Holly Ann McDaniel
CPC分类号： G06T11/005 , A61B6/032 , A61B6/52
摘要： A computer-implemented method includes generating an image from scan data acquired during a non-diagnostic scan utilizing a computed tomography scanner. The computer-implemented method also includes performing object segmentation based on pixel connectivity on the image to generate segmented regions. The computer-implemented method further includes characterizing pixel connectivity properties of the segmented regions. The computer-implemented method still further includes obtaining respective bounding shape coordinates and area for bounding shapes of the segmented regions.
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公开(公告)号：US20230109837A1
公开(公告)日：2023-04-13
申请号：US17493005
申请日：2021-10-04
摘要： A method for verifying aperture positions of a pre-patient collimator of a computed tomography (CT) imaging system includes obtaining data collected by an X-ray measurement device having detector elements subjected to X-rays emitted from an X-ray source of the CT imaging system with the pre-patient collimator at an expected aperture position. The method also includes calculating a measured collimator aperture position for the pre-patient collimator based on the obtained data. The method further includes comparing the measured collimator aperture position to a system specification for the expected aperture position for the CT imaging system. The method even further includes generating an output based on the comparison of the measured collimator aperture position to the system specification.
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公开(公告)号：US20230165557A1
公开(公告)日：2023-06-01
申请号：US17536323
申请日：2021-11-29
CPC分类号： A61B6/584 , G06T7/11 , G06T2207/10081 , G06T2207/20081 , G06T2207/20084 , G06T2207/30004
摘要： A computer-implemented method includes obtaining, at a processor, a tomographic image of a phantom, wherein the phantom includes heterogeneous regions having a plurality of materials with varying attenuation coefficients. The method also includes automatically segmenting, via the processor, the heterogeneous regions from the tomographic image to generate a segmented image. The method further includes automatically identifying, via the processor, a plurality of regions of interest having varying attenuation coefficients within the tomographic image based on the segmented image. The method still further includes automatically labeling, via the processor, each region of interest of the plurality of regions of interest as representing a particular material of the plurality of materials. The method even further includes outputting, via the processor, a labeled image of the tomographic image. The method may be utilized in quality assurance testing and calibration.
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