Methods, Systems and Computer Program Products for Analyzing Three Dimensional Data Sets Obtained from a Sample
    73.
    发明申请
    Methods, Systems and Computer Program Products for Analyzing Three Dimensional Data Sets Obtained from a Sample 有权
    用于分析样本中获得的三维数据集的方法,系统和计算机程序产品

    公开(公告)号:US20110075946A1

    公开(公告)日:2011-03-31

    申请号:US12959722

    申请日:2010-12-03

    IPC分类号: G06K9/32

    摘要: Methods of analyzing three dimensional data sets obtained from a sample over time are provided. The methods include aligning first and second volume intensity projection (VIP) images based on at least one landmark in the first and second VIP images. The first and second VIP images are obtained from a first three dimensional data set obtained from the sample at a first time and a second three dimensional data set obtained from the sample at a second time, respectively.

    摘要翻译: 提供了一种随时间分析从样本获得的三维数据集的方法。 所述方法包括基于第一和第二VIP图像中的至少一个地标来对准第一和第二体积强度投影(VIP)图像。 第一和第二VIP图像分别从第一次从样本获得的第一三维数据集和第二次从样本获得的第二三维数据集获得。

    Methods and computer program products for quantitative three-dimensional image correction and clinical parameter computation in optical coherence tomography
    74.
    发明申请
    Methods and computer program products for quantitative three-dimensional image correction and clinical parameter computation in optical coherence tomography 有权
    光学相干断层扫描中定量三维图像校正和临床参数计算的方法和计算机程序产品

    公开(公告)号:US20110032533A1

    公开(公告)日:2011-02-10

    申请号:US12799890

    申请日:2010-05-04

    IPC分类号: G01B11/02

    摘要: Methods and computer program products for quantitative three-dimensional (“3D”) image correction in optical coherence tomography. Using the methods and computer program products, index interface (refracting) surfaces from the raw optical coherence tomography (“OCT”) dataset from an OCT system can be segmented. Normal vectors or partial derivatives of the curvature at a refracting surface can be calculated to obtain a refracted image voxel. A new position of each desired refracted image voxel can be iteratively computed. New refracted corrected voxel positions to an even sampling grid can be interpolated to provide corrected image data. In some embodiments, clinical outputs from the corrected image data can be computed.

    摘要翻译: 光学相干断层扫描中定量三维(“3D”)图像校正的方法和计算机程序产品。 使用方法和计算机程序产品,可以对来自OCT系统的原始光学相干断层扫描(“OCT”)数据集的索引接口(折射)表面进行分割。 可以计算折射表面处的曲率的法向矢量或偏导数,以获得折射的图像体素。 可以迭代地计算每个期望的折射图像体素的新位置。 可以将针对均匀采样网格的新的折射校正体素位置进行内插以提供校正的图像数据。 在一些实施例中,可以计算来自校正图像数据的临床输出。

    Method and apparatus for polarization-sensitive optical coherence tomography
    76.
    发明授权
    Method and apparatus for polarization-sensitive optical coherence tomography 有权
    用于偏振敏感光学相干断层扫描的方法和装置

    公开(公告)号:US07826059B2

    公开(公告)日:2010-11-02

    申请号:US10055282

    申请日:2002-01-22

    IPC分类号: G01B9/02

    摘要: A method and apparatus for extracting the vector optical properties of biological samples with micron-scale resolution in three dimensions, using polarization-sensitive optical coherence tomography (PS-OCT). The method measures net retardance, net fast axis, and reflectivity. Polarization sensing is accomplished by illuminating the sample with at least three separate polarization states, using consecutive acquisitions of the same pixel, A-scan, or B-scan. The method can be implemented using non-polarization-maintaining fiber and a single detector. This PS-OCT method reported measures fast axis explicitly. In a calibration test of the system, net retardance was measured with an average error of 7.5° (standard deviation 2.2°) over the retardance range 0° to 180°, and fast axis with average error of 4.8° over the range 0° to 180°.

    摘要翻译: 一种使用偏振光敏光学相干断层扫描(PS-OCT)三维提取微尺度分辨率的生物样品的矢量光学性质的方法和装置。 该方法测量净延迟,净快轴和反射率。 通过使用相同像素,A扫描或B扫描的连续采集,以至少三个单独的极化状态照射样本来实现极化感测。 该方法可以使用非偏振维持光纤和单个检测器来实现。 这种PS-OCT方法报道了快轴测量。 在系统的校准测试中,在0°至180°的延迟范围内测量平均误差为7.5°(标准偏差2.2°)的净延迟,平均误差为4.8°的快轴在0°至 180°。

    SYSTEM FOR FOURIER DOMAIN OPTICAL COHERENCE TOMOGRAPHY
    77.
    发明申请
    SYSTEM FOR FOURIER DOMAIN OPTICAL COHERENCE TOMOGRAPHY 审中-公开
    用于FOURIER域光学相干TOMOGRAPHY的系统

    公开(公告)号:US20100265511A1

    公开(公告)日:2010-10-21

    申请号:US12759029

    申请日:2010-04-13

    申请人: Joseph A. Izatt

    发明人: Joseph A. Izatt

    IPC分类号: G01J3/45 G01B11/02 G01B9/02

    摘要: Optical coherence tomography (OCT) is an imaging method which can image with micrometer-scale resolution up to a few millimeters deep into, for example, living biological tissues and preserved tissue samples. An improved apparatus and image reconstruction algorithm for parallel Fourier Domain OCT which greatly eases requirements for interferometer stability and also allows for more efficient parallel image acquisition is provided. The apparatuses and algorithms reconstruct images from interfered, low-coherence, multiwave length signals having a .pi. radian phase difference relative to one another. Other numbers of signals and other phase differences may be alternatively used, with some combinations resulting in higher resolution and image stability. The apparatus also eliminates a need for bulk optics to modulate a phase delay in a reference arm of the optical path. Images may be reconstructed using two spectrometers, where each is coupled to a detector array such as a photodiode array.

    摘要翻译: 光学相干断层扫描(OCT)是一种成像方法,可以将数千米深的微米级分辨率图像形成例如活体生物组织和保留组织样本。 提供了一种用于并行傅立叶域OCT的改进的装置和图像重建算法,其大大减轻了干涉仪稳定性的要求,并且还提供了更有效的并行图像采集。 装置和算法从具有.pi的干扰,低相干,多波长信号重构图像。 弧度相位差相对于彼此。 可以替代地使用其他数量的信号和其它相位差,其中一些组合导致更高的分辨率和图像稳定性。 该装置还消除了对光学路径的参考臂中的相位延迟调制体光学器件的需要。 可以使用两个光谱仪重建图像,其中每个光谱仪耦合到诸如光电二极管阵列的检测器阵列。