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Improved imaging with real-time tracking using optical coherence tomography

An imager and scanner technology, applied in the field of medical imaging, can solve the problems of inflexible and heavy real-time motion tracking

Inactive Publication Date: 2014-01-08
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, such complex modeling is computationally intensive and heavy; and due to its complexity, such motion tracking is inflexible in real-time

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  • Improved imaging with real-time tracking using optical coherence tomography
  • Improved imaging with real-time tracking using optical coherence tomography
  • Improved imaging with real-time tracking using optical coherence tomography

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Embodiment Construction

[0023] The present invention proposes a solution for addressing some of the disadvantages of these tracking methods. A method and apparatus are disclosed for performing real-time lateral tracking using video images to enable registration of OCT scan locations. Fast and efficient algorithms can be used to obtain real-time tracking information using near-infrared video images. Real-time tracking detects lateral eye movement and actively moves the OCT scan beam to the desired scan position. This active tracking system eliminates out-of-place OCT scans and facilitates acquisition of OCT data from well-defined locations in three-dimensional space. The optical backscatter intensity along each A-scan can be obtained by standard FD-OCT acquisition and processing. Sequential OCT B-scans can be aligned in lateral, axial, and rotational directions to perform axial scan registration. OCT B-scans acquired from the same location and registered in this manner are suitable for improving OC...

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Abstract

An optical coherence tomography system is provided. The system includes an OCT imager; a two-dimensional transverse scanner coupled to the OCT imager, the two-dimensional transverse scanner receiving light from the light source and coupling reflected light from a sample into the OCT imager; optics that couple light between the two-dimensional transverse scanner and the sample; a video camera coupled to the optics and acquiring images of the sample; and a computer coupled to receive images of the sample from the video camera, the computer processing the images and providing a motion offset signal based on the images to the two-dimensional transverse scanner.

Description

[0001] Tony H·Ke Luo Xingzhi Zhao Yonghua Zhang Benkui [0002] related application [0003] This application claims priority to U.S. Provisional Application No. 61 / 481,055, filed April 29, 2011, and U.S. Nonprovisional Application No. 13 / 458,531, filed April 27, 2012, the disclosures of which are incorporated by reference All combined here. technical field [0004] Embodiments of the invention relate to the field of medical imaging. In particular, some embodiments relate to apparatus and methods for improving the quality of optical coherence tomography (OCT) images utilizing real-time video tracking techniques. Background technique [0005] Optical coherence tomography (OCT) is a high-resolution imaging technique for in vivo cross-sectional and three-dimensional imaging of biological tissue microstructure (Wolfgang Drexler and James G. Fujimoto, [Optical Coherence Tomography: Technology and Application, Springer (2008)]). Over the past two decades, OCT has been widely us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B9/02
CPCA61B3/102A61B3/113
Inventor 托尼·H·科罗兴志赵勇华章本魁
Owner OPTOVUE