利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

8 条记录 (耗时 0.032 秒)

    PHASE GRADIENT OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY
    2.
    发明申请
    PHASE GRADIENT OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY 审中-公开
    相位梯度光学相干图像摄影

    公开(公告)号：US20160317020A1

    公开(公告)日：2016-11-03

    申请号：US15141626

    申请日：2016-04-28

    申请人： Gangjun Liu ,  David Huang ,  Yali Jia

    发明人： Gangjun Liu ,  David Huang ,  Yali Jia

    IPC分类号： A61B3/00 ,  A61B3/12 ,  G01B9/02

    CPC分类号： A61B3/0025 ,  A61B3/102 ,  A61B3/1233 ,  G01B9/02004 ,  G01B9/02045 ,  G01B9/02076 ,  G01B9/02091

    摘要： Disclosed are methods of imaging vascular flow using optical coherence tomography. The methods involve calculating an OCT phase difference and an OCT phase gradient from interference fringes acquired from B-scans. The methods can be implemented in a split-spectrum embodiment to enhance the signal to noise ratio of vascular flow images. The methods also obviate the need for correction of bulk motion and laser trigger jitter-induced phase artifacts.

    摘要翻译： 公开了使用光学相干断层扫描成像血管流动的方法。 该方法涉及从B扫描获得的干涉条纹计算OCT相位差和OCT相位梯度。 该方法可以在分裂实施例中实现，以增强血管图像的信噪比。 这些方法也避免了校正体积运动和激光触发抖动引起的相位伪影的需要。

    SYSTEMS AND METHODS FOR AUTOMATED WIDEFIELD OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY
    3.
    发明申请
    SYSTEMS AND METHODS FOR AUTOMATED WIDEFIELD OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY 审中-公开

    公开(公告)号：US20190150729A1

    公开(公告)日：2019-05-23

    申请号：US16308901

    申请日：2017-06-15

    申请人： David Huang ,  Gangjun Liu ,  Yali Jia

    发明人： David Huang ,  Gangjun Liu ,  Yali Jia

    IPC分类号： A61B3/10 ,  A61B3/00 ,  A61B3/12 ,  A61B5/00 ,  A61B5/11 ,  A61B5/02

    摘要： Disclosed are systems and methods for generating wide-field optical coherence tomography angiography (OCTA) images. In embodiments, multiple OCTA scans of a sample are automatically acquired at overlapping locations. The systems and methods include functionality to adaptively control the scanning procedure such that eye blink and eye motion events are detected in real time and accounted for during 3D scan acquisition. Also disclosed are methods for detecting and correcting motion-related artifacts in OCTA datasets which allow for the longer scan times over larger fields of view required for wide-field imaging. These methods may include division of en face angiogram images into a set of motion-free parallel strips, and application of gross and fine registration methods to align overlapping strips into a motion-corrected composite image. A series of overlapping motion-corrected composite images may be combined into a larger montage to enable wide-field OCTA imaging using multiple OCTA scans.