1. Lingfeng Yu

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    1. Mentioned In 37 Articles

    2. Surgical microscope with integrated optical coherence tomography and display systems

      Surgical microscope with integrated optical coherence tomography and display systems
      An ophthalmic surgical microscope includes a beam coupler positioned along an optical path of the surgical microscope between a first eyepiece and magnifying/focusing optics, the beam coupler operable to direct the OCT imaging beam along a first portion of the optical path of the surgical microscope between the beam coupler and a patient's eye (an OCT image being generated based on a reflected portion of the OCT imaging ...
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      Mentions: Lingfeng Yu
    3. Vitreoretinal membrane characterization using optical coherence tomography

      Vitreoretinal membrane characterization using optical coherence tomography
      Optical coherence tomography (OCT) scan data is used to automatically detect and characterize vitreoretinal membranes in a spatially precise manner to generate a mask image. The mask image may characterize various aspects of a vitreoretinal membrane. The mask image is then overlaid with an optical image of the retina to enable visualization of the vitreoretinal membrane.
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      Mentions: Lingfeng Yu
    4. Location indicator for optical coherence tomography in ophthalmic visualization

      Location indicator for optical coherence tomography in ophthalmic visualization
      An ophthalmic visualization system can include a computing device in communication with an OCT system configured to scan a surgical field to generate an OCT image. The computing device can be configured to determine locations within the surgical field corresponding to locations within the OCT image. The ophthalmic visualization system can also include an indicator mechanism in communication with the computing device and a surgical microscope configured to image the ...
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      Mentions: Lingfeng Yu
    5. Tracking system for surgical optical coherence tomography

      Tracking system for surgical optical coherence tomography
      An OCT tracking system includes an imaging unit operable to generate a fundus image of a patient's eye and a tracking system operable to process the fundus image to determine a location of a surgical instrument inserted into the patient's eye. The OCT tracking system further includes an OCT system including an OCT light source operable to generate an OCT imaging beam and a beam scanner. Based at ...
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      Mentions: Lingfeng Yu
    6. Microscope-less wide field-of-view surgical OCT visualization system

      Microscope-less wide field-of-view surgical OCT visualization system
      A surgical imaging system can comprise a light source, configured to generate an imaging light beam; a beam guidance system, configured to guide the imaging light beam from the light source; a beam scanner, configured to receive the imaging light from the beam guidance system, and to generate a scanned imaging light beam; a beam coupler, configured to redirect the scanned imaging light beam; and a wide field of view ...
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      Mentions: Lingfeng Yu
    7. Devices, Systems, And Methods For Calibrating An Oct Imaging System In A Laser Surgical System

      Devices, Systems, And Methods For Calibrating An Oct Imaging System In A Laser Surgical System
      An adjustment system for an Optical Coherence Tomography (OCT) imaging system includes an OCT light source; a beam splitter, splitting the OCT light beam into an imaging beam to an imaging arm, and a reference beam to a reference arm; a probe, guiding the imaging beam onto a target and receiving a returned imaging beam from the target; the beam splitter generating an interference beam from the returned imaging beam ...
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    8. Inter-frame complex OCT data analysis techniques

      Inter-frame complex OCT data analysis techniques
      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 ...
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    9. Systems And Methods For SWEPT-SOURCE Optical Coherence Tomography

      Systems And Methods For SWEPT-SOURCE Optical Coherence Tomography
      Systems and methods for increasing the duty cycle and/or producing interleaved pulses of alternating polarization states in swept-source optical coherence tomography (OCT) systems are considered. Embodiments including improved buffering, frequency selecting filter sharing among multiple SOAs, intracavity switching, and multiple wavelength bands are described. The unique polarization properties of the source configurations have advantages in speckle reduction, polarization-sensitive measurements, polarization state dependent phase shifts, spatial shifts, and temporal shifts ...
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    10. Methods, Systems And Applications Of Variable Imaging Depth In Fourier Domain Optical Coherence Tomography

      Methods, Systems And Applications Of Variable Imaging Depth In Fourier Domain Optical Coherence Tomography
      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 ...
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    11. Three-dimensional optical coherence tomography imaging of retinal sheet implants in live rats

      Three-dimensional optical coherence tomography imaging of retinal sheet implants in live rats
      Purpose To obtain three-dimensional images from retinal transplants in live animals and evaluate the placement and structural quality of the transplants. Methods Donor retinal sheets were isolated from E19 fetuses of transgenic rats expressing human alkaline phosphatase (hPAP), and transplanted to the subretinal space of 19–56 days old S334ter-3 rat recipients with fast retinal degeneration (average age at surgery 32 days). A total of 143 rats were imaged 1 ...
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  2. About Lingfeng Yu

    Lingfeng Yu

    Lingfeng Yu received his B.S. degree in precision instrumentation in 1998 from Tsinghua University, China with honor and was selected as one of the top students in China, recommended by the Ministry of Education P.R.China, to pursue graduate study in Hong Kong University of Science and Technology (HKUST). He received his Mphil and Ph.D. degrees in optics and optical information processing from HKUST in 2001 and 2003, respectively. Dr. Yu was awarded the prestigious Alexander von Humboldt Research Fellowship from the Alexander von Humboldt (AvH) Foundation of the Federal Republic of Germany in 2005. He is currently a Staff Scientist of Carl Zeiss Meditec Inc. in Dublin California.

     

    Dr. Yu has been engaged in extensive cutting-edge research in biomedical optics, optical tomographic imaging and microscopic imaging as evidenced by his more than 70 peer-reviewed technical papers and multiple patents. He is currently a member of SPIE, OSA, Sigma Xi; Fellow-in-Training of Head and Neck Optical Diagnostics Society (HNODS), the Society of Minimally Invasive Diagnostics and Therapy; and reviewer of multiple peer-reviewed top journals. His expertise and research interests include optical biopsy and functional imaging, optical coherence tomography, quantitative phase-contrast microscopy, digital holographic microscopy, and three-dimensional imaging.