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公开(公告)号：US11701073B2
公开(公告)日：2023-07-18
申请号：US17354286
申请日：2021-06-22
Applicant: Rensselaer Polytechnic Institute
Inventor： Daniel David Harrison , Ge Wang
CPC classification number: A61B6/4035 , A61B6/032 , A61B6/4085 , A61B6/5258 , A61B6/4007 , A61B6/482
Abstract: Systems and method for performing X-ray computed tomography (CT) that can improve spectral separation and decrease motion artifacts without increasing radiation dose are provided. The systems and method can be used with either a kVp-switching source or a single-kVp source. When used with a kVp-switching source, an absorption grating and a filter grating can be disposed between the X-ray source and the sample to be imaged. Relative motion of the filter and absorption gratings can by synchronized to the kVp switching frequency of the X-ray source. When used with a single-kVp source, a combination of absorption and filter gratings can be used and can be driven in an oscillation movement that is optimized for a single-kVp X-ray source. With a single-kVp source, the absorption grating can also be omitted and the filter grating can remain stationary.
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Patent Agency Ranking
公开(公告)号：US20190269375A1
公开(公告)日：2019-09-05
申请号：US16294438
申请日：2019-03-06
Applicant: Rensselaer Polytechnic Institute
Inventor： Daniel David Harrison , Ge Wang
Abstract: Systems and method for performing X-ray computed tomography (CT) that can improve spectral separation and decrease motion artifacts without increasing radiation dose are provided. The systems and method can be used with either a kVp-switching source or a single-kVp source. When used with a kVp-switching source, an absorption grating and a filter grating can be disposed between the X-ray source and the sample to be imaged. Relative motion of the filter and absorption gratings can by synchronized to the kVp switching frequency of the X-ray source. When used with a single-kVp source, a combination of absorption and filter gratings can be used and can be driven in an oscillation movement that is optimized for a single-kVp X-ray source. With a single-kVp source, the absorption grating can also be omitted and the filter grating can remain stationary.
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公开(公告)号：US20210321961A1
公开(公告)日：2021-10-21
申请号：US17354286
申请日：2021-06-22
Applicant: Rensselaer Polytechnic Institute
Inventor： Daniel David Harrison , Ge Wang
Abstract: Systems and method for performing X-ray computed tomography (CT) that can improve spectral separation and decrease motion artifacts without increasing radiation dose are provided. The systems and method can be used with either a kVp-switching source or a single-kVp source. When used with a kVp-switching source, an absorption grating and a filter grating can be disposed between the X-ray source and the sample to be imaged. Relative motion of the filter and absorption gratings can by synchronized to the kVp switching frequency of the X-ray source. When used with a single-kVp source, a combination of absorption and filter gratings can be used and can be driven in an oscillation movement that is optimized for a single-kVp X-ray source. With a single-kVp source, the absorption grating can also be omitted and the filter grating can remain stationary.
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公开(公告)号：US12175734B2
公开(公告)日：2024-12-24
申请号：US16969072
申请日：2019-02-11
Applicant: RENSSELAER POLYTECHNIC INSTITUTE
Inventor： Ge Wang , Daniel David Harrison , Xun Jia , Klaus Mueller
IPC: G01N33/48 , A61B5/00 , G06F18/214 , G06N3/04 , G06N3/08 , G06N3/10 , G06N20/00 , G06T11/00 , G06V10/82
Abstract: In some embodiments, a method of machine learning includes identifying, by an auto encoder network, a simulator feature based, at least in part, on a received first simulator data set and an emulator feature based, at least in part, on a received first emulator data set. The method further includes determining, by a synthesis control circuitry, a synthesized feature based, at least in part, on the simulator feature and based, at least in part, on the emulator feature; and generating, by the auto encoder network, an intermediate data set based, at least in part, on a second simulator data set and including the synthesized feature. Some embodiments of the method further include determining, by a generative artificial neural network, a synthesized data set based, at least in part, on the intermediate data set and based, at least in part, on an objective function.
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公开(公告)号：US11051772B2
公开(公告)日：2021-07-06
申请号：US16294438
申请日：2019-03-06
Applicant: Rensselaer Polytechnic Institute
Inventor： Daniel David Harrison , Ge Wang
Abstract: Systems and method for performing X-ray computed tomography (CT) that can improve spectral separation and decrease motion artifacts without increasing radiation dose are provided. The systems and method can be used with either a kVp-switching source or a single-kVp source. When used with a kVp-switching source, an absorption grating and a filter grating can be disposed between the X-ray source and the sample to be imaged. Relative motion of the filter and absorption gratings can by synchronized to the kVp switching frequency of the X-ray source. When used with a single-kVp source, a combination of absorption and filter gratings can be used and can be driven in an oscillation movement that is optimized for a single-kVp X-ray source. With a single-kVp source, the absorption grating can also be omitted and the filter grating can remain stationary.
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公开(公告)号：US20210035340A1
公开(公告)日：2021-02-04
申请号：US16969072
申请日：2019-02-11
Applicant: RENSSELAER POLYTECHNIC INSTITUTE
Inventor： Ge Wang , Daniel David Harrison , Xun Jia , Klaus Mueller
Abstract: In some embodiments, a method of machine learning includes identifying, by an auto encoder network, a simulator feature based, at least in part, on a received first simulator data set and an emulator feature based, at least in part, on a received first emulator data set. The method further includes determining, by a synthesis control circuitry, a synthesized feature based, at least in part, on the simulator feature and based, at least in part, on the emulator feature; and generating, by the auto encoder network, an intermediate data set based, at least in part, on a second simulator data set and including the synthesized feature. Some embodiments of the method further include determining, by a generative artificial neural network, a synthesized data set based, at least in part, on the intermediate data set and based, at least in part, on an objective function.
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