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    METHODS, SYSTEMS AND APPLICATIONS OF VARIABLE IMAGING DEPTH IN FOURIER DOMAIN OPTICAL COHERENCE TOMOGRAPHY
    1.
    发明申请
    METHODS, SYSTEMS AND APPLICATIONS OF VARIABLE IMAGING DEPTH IN FOURIER DOMAIN OPTICAL COHERENCE TOMOGRAPHY 审中-公开
    方法，系统和可变成像深度在FOURIER DOMAIN OPTICAL COHERENCE TOMOGRAPHY中的应用

    公开(公告)号：US20130120757A1

    公开(公告)日：2013-05-16

    申请号：US13354066

    申请日：2012-01-19

    申请人： Lingfeng YU ,  Matthew J. Everett ,  Mary K. Durbin ,  Utkarsh Sharma

    发明人： Lingfeng YU ,  Matthew J. Everett ,  Mary K. Durbin ,  Utkarsh Sharma

    IPC分类号： A61B3/10 ,  G01B9/02

    CPC分类号： A61B3/102 ,  G01B9/02004 ,  G01B9/02069 ,  G01B9/02091 ,  G01N21/4795

    摘要： Systems, methods and applications for adjusting the imaging depth of a Fourier Domain optical coherence tomography system without impacting the axial resolution of the system are presented. One embodiment of the invention involves changing the sweep rate of a swept-source OCT system while maintaining the same data acquisition rate and spectral bandwidth of the source. Another embodiment involves changing the data acquisition rate of a SS-OCT system while maintaining the same sweep rate over the same spectral bandwidth. Several applications of variable imaging depth in the field of ophthalmic imaging are described.

    摘要翻译： 提出了一种用于调整傅立叶域光学相干断层扫描系统的成像深度而不影响系统轴向分辨率的系统，方法和应用。 本发明的一个实施例涉及改变扫频源OCT系统的扫描速率，同时维持源的相同的数据采集速率和光谱带宽。 另一实施例涉及改变SS-OCT系统的数据采集速率，同时在相同的光谱带宽上保持相同的扫描速率。 描述了眼科成像领域可变成像深度的几种应用。

    Inter-frame complex OCT data analysis techniques
    4.
    发明授权
    Inter-frame complex OCT data analysis techniques 有权

    公开(公告)号：US08433393B2

    公开(公告)日：2013-04-30

    申请号：US13543373

    申请日：2012-07-06

    申请人： Utkarsh Sharma ,  Matthew J. Everett ,  Lingfeng Yu

    发明人： Utkarsh Sharma ,  Matthew J. Everett ,  Lingfeng Yu

    IPC分类号： A61B5/00

    CPC分类号： A61B3/102 ,  A61B5/0066 ,  A61B5/0261

    摘要： Techniques for collecting and processing complex OCT data to detect localized motion contrast information with enhanced accuracy and sensitivity are presented. In a preferred embodiment, vector differences between complex OCT signals taken at the same location on the sample are used to detect blood flow in the retina. Additional embodiments involving non-linear intensity weighting of the motion contrast information, normalization of the vector difference amplitudes, and calculating the absolute value of the standard deviation of Doppler signal are described. Image processing techniques to enhance the images resulting from these motion contrast techniques are also presented.

    Data acquisition methods for reduced motion artifacts and applications in OCT angiography
    5.
    发明授权
    Data acquisition methods for reduced motion artifacts and applications in OCT angiography 有权
    OCT血管造影术中减少运动假象和应用的数据采集方法

    公开(公告)号：US08857988B2

    公开(公告)日：2014-10-14

    申请号：US13542588

    申请日：2012-07-05

    申请人： Utkarsh Sharma ,  Matthew J. Everett

    发明人： Utkarsh Sharma ,  Matthew J. Everett

    IPC分类号： A61B3/10 ,  A61B5/00

    CPC分类号： A61B3/102 ,  A61B5/0066

    摘要： Systems and methods for reducing the effects of motion on functional optical coherence tomography (OCT) imaging are described. Embodiments including post-processing and motion tracking are presented. A preferred embodiment in which functional OCT data is collected and analyzed for motion as a multiple scan unit is described. An extension of the invention to the collection of large field of view or montaged functional OCT data sets is also presented.

    摘要翻译： 描述了用于减少运动对功能光学相干断层扫描（OCT）成像的影响的系统和方法。 提出了包括后处理和运动跟踪的实施例。 描述功能性OCT数据被收集并分析为多扫描单元的运动的优选实施例。 还介绍了本发明扩展到收集大视野或功能OCT功能的数据集。