1. Joel M. Friedman

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    1-8 of 8
    1. Mentioned In 8 Articles

    2. Calibration and image processing devices, methods, and systems

      Calibration and image processing devices, methods, and systems
      In part, the invention relates to systems and methods of calibrating a plurality of frames generated with respect to a blood vessel as a result of a pullback of an intravascular imaging probe being pullback through the vessel. A calibration feature disposed in the frames that changes between a subset of the frames can be used to perform calibration. Calibration can be performed post-pullback. Various filters and image processing techniques ...
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    3. Optical coherence tomography lumen morphology and vascular resistance measurements methods for blood vessel evaluations

      Optical coherence tomography lumen morphology and vascular resistance measurements methods for blood vessel evaluations
      A method and apparatus of automatically locating in an image of a blood vessel the lumen boundary at a position in the vessel and from that measuring the diameter of the vessel. From the diameter of the vessel and estimated blood flow rate, a number of clinically significant physiological parameters are then determined and various user displays of interest generated. One use of these images and parameters is to aid ...
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    4. Stent visualization and malapposition detection systems, devices, and methods

      Stent visualization and malapposition detection systems, devices, and methods
      In part, the invention relates to computer-based methods, devices, and systems suitable for displaying stent malapposition in a 2-D or 3-D image. A threshold malapposition distance can be set as an input in response to which a software component in an imaging pipeline automatically detects stent struts and calculates a malapposition distance from a lumen contour. Projections of stent strut dimensions can be used to compensate for stent imaging artifacts ...
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    5. Lumen morphology image reconstruction based on the scan line data of OCT

      Lumen morphology image reconstruction based on the scan line data of OCT
      A method and apparatus of automatically locating in an image of a blood vessel the lumen boundary at a position in the vessel and from that measuring the diameter of the vessel. From the diameter of the vessel and estimated blood flow rate, a number of clinically significant physiological parameters are then determined and various user displays of interest generated. One use of these images and parameters is to aid ...
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    6. Apparatus, systems, and methods of in-vivo blood clearing in a lumen

      Apparatus, systems, and methods of in-vivo blood clearing in a lumen
      In one aspect, the invention relates to a computer-implemented method of triggering optical coherence tomography data collection. The method includes collecting optical coherence tomography data with respect to a vessel using an optical coherence tomography probe disposed in the vessel; determining a clearing radius and a quality value for each frame of optical coherence tomography data collected for the vessel using a computer; determining if a blood clearing state has ...
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    7. Apparatus, Systems, And Methods Of In-Vivo Blood Clearing In A Lumen

      Apparatus, Systems, And Methods Of In-Vivo Blood Clearing In A Lumen
      In one aspect, the invention relates to a computer-implemented method of triggering optical coherence tomography data collection. The method includes collecting optical coherence tomography data with respect to a vessel using an optical coherence tomography probe disposed in the vessel; determining a clearing radius and a quality value for each frame of optical coherence tomography data collected for the vessel using a computer; determining if a blood clearing state has ...
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    8. Apparatus, Systems, And Methods Of In-Vivo Blood Clearing In A Lumen

      Apparatus, Systems, And Methods Of In-Vivo Blood Clearing In A Lumen
      In one aspect, the invention relates to a computer-implemented method of triggering optical coherence tomography data collection. The method includes collecting optical coherence tomography data with respect to a vessel using an optical coherence tomography probe disposed in the vessel; determining a clearing radius and a quality value for each frame of optical coherence tomography data collected for the vessel using a computer; determining if a blood clearing state has ...
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    9. Imaging catheter with integrated reference reflector

      Imaging catheter with integrated reference reflector
      In part, the invention relates to a lens assembly. The lens assembly includes a micro-lens; a beam director in optical communication with the micro-lens; and a substantially transparent film. The substantially transparent film is capable of bi-directionally transmitting light, and generating a controlled amount of backscatter. In addition, the film surrounds a portion of the beam director.
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  2. About Joel M. Friedman

    Joel M. Friedman

    Joel Friedman is Vice President of Software Development at Lightlab Imaging a St. Jude Medical Company.