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公开(公告)号：US11246208B2
公开(公告)日：2022-02-08
申请号：US16666436
申请日：2019-10-29
发明人： Guoping Zhu , Jinglin Wu , Tieshan Zhang , Siming Chen , Xu Chu
摘要： A method may include obtaining a feedback or a reference value of a tube voltage applied to a radiation source of a radiation device for generating radiation rays. The method may also include determining, based on the feedback or the reference value of the tube voltage, a specific value of a focusing parameter associated with a focusing device of the radiation device. The method may further include causing the focusing device to shape a focus of the radiation rays according to the determined value of the focusing parameter. The focus of the radiation rays may satisfy an operational constraint under the specific value of the focusing parameter.
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公开(公告)号：US11330696B2
公开(公告)日：2022-05-10
申请号：US16666438
申请日：2019-10-29
发明人： Tieshan Zhang , Guoping Zhu , Bobin Tong , Jinglin Wu , Xu Chu
摘要： The present disclosure relates to a high voltage generator including multiple high voltage generating modules configured to provide a total voltage. Each of the multiple high voltage generating modules may be configured to receive a driving pulse and generate a voltage component of the total voltage according to the driving pulse. The multiple high voltage generating modules may be in a series connection. Time points when the multiple high voltage generating modules receive driving pulses may be different, and waveforms of the driving pulses may be the same.
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公开(公告)号：US11234323B2
公开(公告)日：2022-01-25
申请号：US16656507
申请日：2019-10-17
发明人： Guoping Zhu , Patrick Joseph Kling , Jiawen Zhou , Tieshan Zhang , Jinglin Wu , Xu Chu
IPC分类号： H05G1/32 , H05G1/34 , A61B6/00 , H05G1/58 , A61B5/055 , A61B6/03 , G06T7/00 , G06T11/00 , H01J35/02
摘要： Systems and methods for medical imaging. The method may include acquiring a tube voltage switching waveform for a radiation source of a medical device. The method may include determining a tube current switching period based on the tube voltage switching waveform. The method may include determining a sampling period correlated with the tube current switching period. The method may include acquiring projection data according to the sampling period. The method may further include reconstructing an image based on the acquired projection data.
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公开(公告)号：US11058476B2
公开(公告)日：2021-07-13
申请号：US16666435
申请日：2019-10-29
发明人： Guoping Zhu , Tieshan Zhang , Xu Chu , Fan Zhao , Zhihui Shu , Jinglin Wu , Bin Cao
摘要： The present disclosure relates to systems and methods for energy imaging. The method may include obtaining a reference waveform of a tube voltage of a radiation source of a scanner. The reference waveform may be formed based on a superposition of a sine wave and one or more harmonics corresponding to the sine wave. The method may include causing a high voltage generator to generate the tube voltage changing between a first voltage and a second voltage lower than the first voltage according to the reference waveform. The tube voltage may be provided to the radiation source for generating radiation rays. The method may further include causing the scanner to perform energy imaging.
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公开(公告)号：US11974383B2
公开(公告)日：2024-04-30
申请号：US17649367
申请日：2022-01-30
发明人： Guoping Zhu , Jinglin Wu , Tieshan Zhang , Siming Chen , Xu Chu
CPC分类号： H05G1/52 , H01J35/147 , H05G1/58
摘要： A method may include obtaining a feedback or a reference value of a tube voltage applied to a radiation source of a radiation device for generating radiation rays. The method may also include determining, based on the feedback or the reference value of the tube voltage, a specific value of a focusing parameter associated with a focusing device of the radiation device. The method may further include causing the focusing device to shape a focus of the radiation rays according to the determined value of the focusing parameter. The focus of the radiation rays may satisfy an operational constraint under the specific value of the focusing parameter.
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