公开(公告)号：US10760893B2

公开(公告)日：2020-09-01

申请号：US15334648

申请日：2016-10-26

Applicant: University of Kent at Canterbury

Inventor： Adrian Podoleanu ,  Sylvain Rivet ,  Adrian Bradu ,  Michael Maria

IPC: G01B9/02

Abstract: The present invention related to an apparatus and method for master slave interferometry, referred to as Complex Master Slave (CMS). The method and apparatus can be used to provide complex-valued measurements of a signal reflected from an axial position inside an object or of signals reflected from points at several axial positions inside an object.

公开(公告)号：US20210145285A1

公开(公告)日：2021-05-20

申请号：US16951442

申请日：2020-11-18

Applicant: University of Kent

Inventor： Adrian Podoleanu ,  Manuel Marques ,  Adrian Bradu ,  Adrian Fernandez Uceda

IPC: A61B5/00 ,  A61B5/16 ,  G01B9/02

Abstract: The present specification relates to Master-Slave (MS) interferometry for sensing the axial position of an object subject to optical coherence tomography (OCT) imaging, and to MS-OCT applied to curved and axially moving objects. The methods and apparatuses allow producing OCT signals from selected depths within the object irrespective of its axial position in respect to the imaging system. Images are obtained for curved objects that are flattened along a layer of interest in the object, images that are used to provide OCT angiography images less disturbed by axial movement or lateral scanning.

公开(公告)号：US11690516B2

公开(公告)日：2023-07-04

申请号：US16951442

申请日：2020-11-18

Applicant: University of Kent

Inventor： Adrian Podoleanu ,  Manuel Marques ,  Adrian Bradu ,  Adrian Fernandez Uceda

IPC: A61B5/00 ,  G01B9/02091 ,  A61B5/16 ,  G01B9/02055 ,  G01B9/02

CPC classification number: A61B5/0066 ,  A61B5/0082 ,  A61B5/163 ,  A61B5/7257 ,  G01B9/02077 ,  G01B9/02088 ,  G01B9/02091

Abstract: The present specification relates to Master-Slave (MS) interferometry for sensing the axial position of an object subject to optical coherence tomography (OCT) imaging, and to MS-OCT applied to curved and axially moving objects. The methods and apparatuses allow producing OCT signals from selected depths within the object irrespective of its axial position in respect to the imaging system. Images are obtained for curved objects that are flattened along a layer of interest in the object, images that are used to provide OCT angiography images less disturbed by axial movement or lateral scanning.

公开(公告)号：US09383187B2

公开(公告)日：2016-07-05

申请号：US14440278

申请日：2013-11-01

Applicant: University of Kent

Inventor： Adrian Podoleanu ,  Adrian Bradu

IPC: G01J3/45 ,  G01B9/02

CPC classification number: G01B9/02044 ,  G01B9/02004 ,  G01B9/02064 ,  G01B9/02088 ,  G01B9/02091 ,  G01B2290/60

Abstract: Real-time depth measurements in sensing in spectral domain interferometry and for en-face and cross section image production in optical coherence tomography can operate without any need to linearize the data to maximize the output signal and achieve the theoretical depth resolution. Novel interferometry is disclosed, where parameters of a master interferometer dictate the results in a slave interferometer. The master interferometer can be the same measuring interferometer used in two stages. The master interferometer parameters are at least optical path difference (OPD) or the speed of variation of the OPD in the master interferometer. Coherence gated data are produced from selected axial positions which can be from positive or negative optical path differences, in parallel, enabling generation of en-face (C-scan) OCT images simultaneously from several depths, free from mirror terms, and production of A-scans and B-scan OCT images using plural reflectivity values measured in parallel from different depths within A-scans.

Abstract translation: 在光学相干断层扫描中的频域干涉测量和面内和横截面图像生成中的实时深度测量可以在不需要线性化数据以使输出信号最大化并达到理论深度分辨率的情况下工作。 公开了新型干涉测量法，其中主干涉仪的参数决定了从属干涉仪中的结果。 主干涉仪可以是两个相同的测量干涉仪。 主干涉仪参数至少在主干涉仪中的光程差（OPD）或OPD的变化速度。 从选择的轴向位置产生相干门控数据，该轴向位置可以是平行的正或负光程差，从而能够从几个深度同时生成面对（C扫描）OCT图像，没有镜像条件，并且产生A 扫描和B扫描OCT图像，使用在A扫描内从不同深度并行测量的多个反射率值。

公开(公告)号：US20150292860A1

公开(公告)日：2015-10-15

申请号：US14440278

申请日：2013-11-11

Applicant: UNIVERSITY OF KENT

Inventor： Adrian Podoleanu ,  Adrian Bradu

IPC: G01B9/02

CPC classification number: G01B9/02044 ,  G01B9/02004 ,  G01B9/02064 ,  G01B9/02088 ,  G01B9/02091 ,  G01B2290/60

Abstract: Real-time depth measurements in sensing in spectral domain interferometry and for en-face and cross section image production in optical coherence tomography can operate without any need to linearize the data to maximize the output signal and achieve the theoretical depth resolution. Novel interferometry is disclosed, where parameters of a master interferometer dictate the results in a slave interferometer. The master interferometer can be the same measuring interferometer used in two stages. The master interferometer parameters are at least optical path difference (OPD) or the speed of variation of the OPD in the master interferometer. Coherence gated data are produced from selected axial positions which can be from positive or negative optical path differences, in parallel, enabling generation of en-face (C-scan) OCT images simultaneously from several depths, free from mirror terms, and production of A-scans and B-scan OCT images using plural reflectivity values measured in parallel from different depths within A-scans.

Abstract translation: 在光学相干断层扫描中的频域干涉测量和面内和横截面图像生成中的实时深度测量可以在不需要线性化数据以使输出信号最大化并达到理论深度分辨率的情况下工作。 公开了新型干涉测量法，其中主干涉仪的参数决定了从属干涉仪中的结果。 主干涉仪可以是两个相同的测量干涉仪。 主干涉仪参数至少在主干涉仪中的光程差（OPD）或OPD的变化速度。 从选择的轴向位置产生相干门控数据，该轴向位置可以是平行的正或负光程差，从而能够从几个深度同时生成面对（C扫描）OCT图像，没有镜像条件，并且产生A 扫描和B扫描OCT图像，使用在A扫描内从不同深度并行测量的多个反射率值。