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公开(公告)号:US09984459B2
公开(公告)日:2018-05-29
申请号:US15091288
申请日:2016-04-05
发明人: Charles A. Reisman , Zhenguo Wang , Atsushi Kubota , Jonathan Liu
CPC分类号: A61B5/0035 , A61B5/0066 , A61B5/02007 , A61B5/7257 , A61B5/7425 , G06K9/52 , G06K9/6215 , G06T5/50 , G06T7/0012 , G06T2207/10101 , G06T2207/20052 , G06T2207/20212 , G06T2207/30041 , G06T2207/30101 , G06T2207/30104
摘要: Methods and systems for angiographic imaging with optical coherence tomography (OCT) are described using ratio-based and angiographic deviation based calculations. In using these calculations to determine motion, arbitrary interframe permutations may be used, post-calculated, non-linear results for projection visualization may be averaged, poor matches may be eliminated on an A-line by A-line basis, windowing functions may be used to improve results, partial spectrums may be used when capturing data, and a minimum intensity threshold may be used for determining which pixels to use.
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公开(公告)号:US11481897B2
公开(公告)日:2022-10-25
申请号:US16930715
申请日:2020-07-16
发明人: Charles A. Reisman , Zhenguo Wang , Atsushi Kubota , Jonathan Liu
摘要: Methods and systems for angiographic imaging with optical coherence tomography (OCT) are described using ratio-based and angiographic deviation based calculations. In using these calculations to determine motion, arbitrary interframe permutations may be used, post- calculated, non-linear results for projection visualization may be averaged, poor matches may be eliminated on an A-line by A-line basis, windowing functions may be used to improve results, partial spectrums may be used when capturing data, and a minimum intensity threshold may be used for determining which pixels to use.
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公开(公告)号:US10788310B2
公开(公告)日:2020-09-29
申请号:US15440713
申请日:2017-02-23
发明人: Zhenguo Wang , Jongsik Kim , Jonathan Liu , Kinpui Chan
IPC分类号: G01B9/02
摘要: An optical coherence tomography (OCT) system electrically mixes a signature signal with an OCT signal (e.g., an interferogram) output by a photodetector of the OCT system. The signature signal may be a signal output by a photodetector that detects an optical signal from a fiber Bragg grating. The signature signal may then be time delayed before combination with the OCT signal. A series of interferograms are then aligned according to the signature signal. A rescaling signal may be similarly electrically mixed with the signature and OCT signals.
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公开(公告)号:US20180247409A1
公开(公告)日:2018-08-30
申请号:US15964871
申请日:2018-04-27
发明人: Charles A. Reisman , Zhenguo Wang , Atsushi Kubota , Jonathan Liu
CPC分类号: A61B5/0035 , A61B5/0066 , A61B5/02007 , A61B5/7257 , A61B5/7425 , G06K9/52 , G06K9/6215 , G06T5/50 , G06T7/0012 , G06T2207/10101 , G06T2207/20052 , G06T2207/20212 , G06T2207/30041 , G06T2207/30101 , G06T2207/30104
摘要: Methods and systems for angiographic imaging with optical coherence tomography (OCT) are described using ratio-based and angiographic deviation based calculations. In using these calculations to determine motion, arbitrary interframe permutations may be used, post-calculated, non-linear results for projection visualization may be averaged, poor matches may be eliminated on an A-line by A-line basis, windowing functions may be used to improve results, partial spectrums may be used when capturing data, and a minimum intensity threshold may be used for determining which pixels to use.
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公开(公告)号:US20160307314A1
公开(公告)日:2016-10-20
申请号:US15091288
申请日:2016-04-05
发明人: Charles A. Reisman , Zhenguo Wang , Atsushi Kubota , Jonathan Liu
CPC分类号: A61B5/0035 , A61B5/0066 , A61B5/02007 , A61B5/7257 , A61B5/7425 , G06K9/52 , G06K9/6215 , G06T5/50 , G06T7/0012 , G06T2207/10101 , G06T2207/20052 , G06T2207/20212 , G06T2207/30041 , G06T2207/30101 , G06T2207/30104
摘要: Methods and systems for angiographic imaging with optical coherence tomography (OCT) are described using ratio-based and angiographic deviation based calculations. In using these calculations to determine motion, arbitrary interframe permutations may be used, post-calculated, non-linear results for projection visualization may be averaged, poor matches may be eliminated on an A-line by A-line basis, windowing functions may be used to improve results, partial spectrums may be used when capturing data, and a minimum intensity threshold may be used for determining which pixels to use.
摘要翻译: 使用基于比例和血管造影偏差的计算描述了使用光学相干断层扫描(OCT)进行血管造影成像的方法和系统。 在使用这些计算来确定运动时,可以使用任意的帧间排列,后计算,用于投影可视化的非线性结果可以被平均,可以通过A线在A线上消除不良匹配,窗口函数可以是 用于改善结果时,可以在捕获数据时使用部分光谱,并且可以使用最小强度阈值来确定要使用的像素。
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公开(公告)号:US20200349701A1
公开(公告)日:2020-11-05
申请号:US16930715
申请日:2020-07-16
发明人: Charles A. Reisman , Zhenguo Wang , Atsushi Kubota , Jonathan Liu
摘要: Methods and systems for angiographic imaging with optical coherence tomography (OCT) are described using ratio-based and angiographic deviation based calculations. In using these calculations to determine motion, arbitrary interframe permutations may be used, post- calculated, non-linear results for projection visualization may be averaged, poor matches may be eliminated on an A-line by A-line basis, windowing functions may be used to improve results, partial spectrums may be used when capturing data, and a minimum intensity threshold may be used for determining which pixels to use.
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公开(公告)号:US10719933B2
公开(公告)日:2020-07-21
申请号:US15964871
申请日:2018-04-27
发明人: Charles A. Reisman , Zhenguo Wang , Atsushi Kubota , Jonathan Liu
摘要: Methods and systems for angiographic imaging with optical coherence tomography (OCT) are described using ratio-based and angiographic deviation based calculations. In using these calculations to determine motion, arbitrary interframe permutations may be used, post-calculated, non-linear results for projection visualization may be averaged, poor matches may be eliminated on an A-line by A-line basis, windowing functions may be used to improve results, partial spectrums may be used when capturing data, and a minimum intensity threshold may be used for determining which pixels to use.
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公开(公告)号:US20170241763A1
公开(公告)日:2017-08-24
申请号:US15440713
申请日:2017-02-23
发明人: Zhenguo Wang , Jongsik Kim , Jonathan Liu , Kinpui Chan
IPC分类号: G01B9/02
摘要: An optical coherence tomography (OCT) system electrically mixes a signature signal with an OCT signal (e.g., an interferogram) output by a photodetector of the OCT system. The signature signal may be a signal output by a photodetector that detects an optical signal from a fiber Bragg grating. The signature signal may then be time delayed before combination with the OCT signal. A series of interferograms are then aligned according to the signature signal. A rescaling signal may be similarly electrically mixed with the signature and OCT signals.
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