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公开(公告)号：US20170256076A1
公开(公告)日：2017-09-07
申请号：US15507077
申请日：2015-07-31
Applicant: General Electric Company
CPC classification number: G06T11/005 , A61B6/032 , A61B6/5205 , G06T7/0012 , G06T2207/10081
Abstract: Embodiments of the present invention disclose a method for removing streaks from detector cells with performance difference, specifically a method for removing streaks from detector cells with performance difference and streaks caused by other reasons. The method comprises: estimating a projection on a detector cell with performance difference for each of one or more views; reconstructing one or more initial images with the estimated projection on the detector cell with performance difference for each view; estimating a projection error on the detector cell with performance difference for each view from the reconstructed one or more initial images having streaks; and reconstructing one or more output images with the estimated projection error on the detector cell with performance difference for each view to remove the streaks from the reconstructed one or more output images, improving quality of CT reconstructed images.
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公开(公告)号：US10517562B2
公开(公告)日：2019-12-31
申请号：US15719079
申请日：2017-09-28
Applicant: GENERAL ELECTRIC COMPANY
IPC: A61B6/00
Abstract: A mobile radiography system is disclosed, which includes a radiation source for radiating a plurality of beams; a detector for detecting the plurality of beams from the radiation source; a controller for determining an angular difference between the radiation source and the detector; and a positioning device mounted with the radiation source for recognizing a position of the detector relative to the radiation source based on the angular difference between the radiation source and the detector to align the radiation source to the detector. A method of aligning a mobile radiography system including a radiation source and a detector is also disclosed.
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公开(公告)号：US20180092619A1
公开(公告)日：2018-04-05
申请号：US15719079
申请日：2017-09-28
Applicant: GENERAL ELECTRIC COMPANY
IPC: A61B6/00
CPC classification number: A61B6/587 , A61B6/08 , A61B6/4064 , A61B6/4233 , A61B6/4283 , A61B6/4291 , A61B6/4405 , A61B6/4452 , A61B6/465 , A61B6/547 , A61B6/588
Abstract: A mobile radiography system is disclosed, which includes a radiation source for radiating a plurality of beams; a detector for detecting the plurality of beams from the radiation source; a controller for determining an angular difference between the radiation source and the detector; and a positioning device mounted with the radiation source for recognizing a position of the detector relative to the radiation source based on the angular difference between the radiation source and the detector to align the radiation source to the detector. A method of aligning a mobile radiography system including a radiation source and a detector is also disclosed.
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公开(公告)号：US10217248B2
公开(公告)日：2019-02-26
申请号：US15507077
申请日：2015-07-31
Applicant: General Electric Company
Abstract: Embodiments of the present invention disclose a method for removing streaks from detector cells with performance difference, specifically a method for removing streaks from detector cells with performance difference and streaks caused by other reasons. The method comprises: estimating a projection on a detector cell with performance difference for each of one or more views; reconstructing one or more initial images with the estimated projection on the detector cell with performance difference for each view; estimating a projection error on the detector cell with performance difference for each view from the reconstructed one or more initial images having streaks; and reconstructing one or more output images with the estimated projection error on the detector cell with performance difference for each view to remove the streaks from the reconstructed one or more output images, improving quality of CT reconstructed images.
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