1. Jin U. Kang

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    1. Mentioned In 131 Articles

    2. Systems, methods and apparatuses for real-time anastomosis guidance and surgical evaluation using optical coherence tomography

      Systems, methods and apparatuses for real-time anastomosis guidance and surgical evaluation using optical coherence tomography
      A surgical evaluation and guidance system for use in extravacular evaluation and guidance of fluid vessel surgeries, includes an optical coherence tomography engine; a vessel probe optically coupled to the optical coherence tomography engine; and a signal processing and display system adapted to communicate with the optical coherence tomography engine to receive imaging signals therefrom. An optical coherence tomography vessel probe for use in extravacular evaluation and guidance of fluid ...
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    3. Feasibility study: protein denaturation and coagulation monitoring with speckle variance optical coherence tomography

      Feasibility study: protein denaturation and coagulation monitoring with speckle variance optical coherence tomography
      We performed the feasibility study using speckle variance optical coherence tomography (SvOCT) to monitor the thermally induced protein denaturation and coagulation process as a function of temperature and depth. SvOCT provided the depth-resolved image of protein denaturation and coagulation with microscale resolution. This study was conducted using egg white. During the heating process, as the temperature increased, increases in the speckle variance signal was observed as the egg white proteins ...
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    4. Optical coherence tomography systems and methods with magnitude and direction tracking of transverse motion

      Optical coherence tomography systems and methods with magnitude and direction tracking of transverse motion
      An optical coherence tomography (OCT) system having magnitude and direction of motion detection has a light source, and a scanning system arranged in an optical path of the light source. The scanning system is configured to scan an illumination beam of light in a spatial pattern around each of a plurality of points of interest of an object under observation for a corresponding plurality of instants of time in which ...
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    5. Ghost Reduction in CP-SSOCT Having Multiple References Using Fourier-Domain Shift and Sum

      Ghost Reduction in CP-SSOCT Having Multiple References Using Fourier-Domain Shift and Sum
      We propose, test, and validate a novel Fourier-domain-based method for ghost image artifacts reduction in a common-path SSOCT system having multiple adjacent reference planes. Common-path probes with imaging systems containing high-index sapphire ball or other lenses produce multiple fixed references due to Fresnel reflections from the lens surfaces. The multiple reference planes produce multiple and overlapping optical coherence tomography (OCT) images. Since such ghost artifacts are the result of the ...
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    6. Optical sensing system for cochlear implant surgery

      Optical sensing system for cochlear implant surgery
      A sensing system for implant surgery includes an insertion device for moving an implant into a narrow cavity in a patient's body. A sensor measures the distance from an end of the insertion device to anatomic surfaces at a distance from the end of the insertion device. An optical coherence tomography (OCT) system integrates the sensor and produces OCT images, which can be quantified to distance measurements. The system ...
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    7. Active depth-guding handheld micro-forceps for membranectomy based on CP-SSOCT

      Active depth-guding handheld micro-forceps for membranectomy based on CP-SSOCT
      In this study, we demonstrate a handheld motion-compensated micro-forceps system using common-path swept source optical coherence tomography with highly accurate depth-targeting and depth-locking for Epiretinal Membrane Peeling. Two motors and a touch sensor were used to separate the two independent motions: motion compensation and tool-tip manipulation. A smart motion monitoring and guiding algorithm was devised for precise and intuitive freehand control. Ex-vivo bovine eye experiments were performed to evaluate accuracy ...
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    8. Optical coherence tomography system having real-time artifact and saturation correction

      Optical coherence tomography system having real-time artifact and saturation correction
      An optical coherence tomography system having real-time artifact and saturation correction includes an optical coherence tomography unit, and a signal processing and display system adapted to communicate with the optical coherence tomography unit to receive imaging signals therefrom. The optical coherence tomography system is a Fourier Domain optical coherence tomography system. The signal processing and display system includes a parallel processor configured to correct the imaging signals, in real time ...
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    9. Lateral distortion corrected optical coherence tomography system

      Lateral distortion corrected optical coherence tomography system
      A lateral-distortion corrected optical coherence tomography system. The system can include an optical coherence tomography sensor, a light source, a fiber-optic system arranged to provide a reference beam and an observation beam, an optical detection system arranged to receive combined light from the reference beam and the observation beam and to provide detection signals, and a data processing system arranged to communicate with the optical detection system and receive the ...
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    10. Interferometric force sensor for surgical instruments

      Interferometric force sensor for surgical instruments
      A surgical tool system according to an embodiment of the current invention includes a surgical tool, and an interferometry system optically coupled to the surgical tool. The surgical tool includes a body section, a sensor section at least one of attached to or integral with the body section, and a surgical section at least one of attached to or integral with the sensor section at an opposing end of the ...
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    11. Distortion corrected optical coherence tomography system

      Distortion corrected optical coherence tomography system
      An axial motion distortion-corrected optical coherence tomography system. The system can include an optical coherence tomography sensor, a light source, a fiber-optic system arranged to provide a reference beam and an observation beam, an optical detection system arranged to receive combined light from the reference beam and the observation beam and to provide detection signals, and a data processing system arranged to receive said detection signals, construct a plurality of ...
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    12. Durable single mode fiber probe with optimized reference reflectivity

      Durable single mode fiber probe with optimized reference reflectivity
      A probe for a common path optical coherence tomography system includes a sheath having a proximal end and a distal end and defining a lumen therein, a single mode optical fiber disposed within the lumen of the sheath such that a portion of the single mode optical fiber extends beyond the distal end of the sheath. The single mode optical fiber has an end face for transmitting and receiving light ...
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    13. Fiber Optic Distal Sensor Controlled MICRO-MANIPULATION Systems And Methods

      Fiber Optic Distal Sensor Controlled MICRO-MANIPULATION Systems And Methods
      A motion-compensated cutting system includes a hand-held tool body, and an actuator connected to the tool body. A shaft of the actuator is movable relative to the tool body so that a distal end of a cutting implement attached to the shaft is axially movable relative to the tool body. An optical coherence tomography system includes an optical fiber with a distal end fixed relative to the distal end of ...
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    14. Motion-compensated optical coherence tomography system

      Motion-compensated optical coherence tomography system
      A motion-compensated optical coherence tomography system includes an optical coherence tomography sensor that includes a common-path optical fiber having an end for emitting light, reflecting reference light and receiving returned light for detection; a motion-compensation system attached to the common-path optical fiber and operable to move at least a portion of the optical fiber so as to compensate for motion between the end of the common-path optical fiber and an ...
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    15. Johns Hopkins University Receives NIH Grant for a OCT-Guided Free-Hand Semi-Automated Microsurgical Tool for Enhanced Retinal Surgery

      Johns Hopkins University Receives NIH Grant for a OCT-Guided Free-Hand Semi-Automated Microsurgical Tool for Enhanced Retinal Surgery
      ...Free-Hand Semi-Automated Microsurgical Tool for Enhanced Retinal Surgery.  The principal investigator is Jin U. Kang.  The program began in 2011 and ends in 2016.  Below is a summary of the proposed work.<...
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    16. Accurate real-time depth control for CP-SSOCT distal sensor based handheld microsurgery tools

      Accurate real-time depth control for CP-SSOCT distal sensor based handheld microsurgery tools
      This paper presents a novel intuitive targeting and tracking scheme that utilizes a common-path swept source optical coherence tomography (CP-SSOCT) distal sensor integrated handheld microsurgical tool. To achieve micron-order precision control, a reliable and accurate OCT distal sensing method is required; simultaneously, a prediction algorithm is necessary to compensate for the system delay associated with the computational, mechanical and electronic latencies. Due to the multi-layered structure of retina, it is ...
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    17. 1-15 of 131 1 2 3 4 5 6 7 8 9 »
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  2. About Jin U. Kang

    Jin U. Kang

    Jin U. Kang is a Professor and Chair in the Department of Electrical and Computer Engineering at The Johns Hopkins University.

  3. Quotes

    1. The main objective of our research has been to make an established surgical tool ‘smarter’ by incorporating fiber-optic sensors and motion control to allow surgeons to maneuver the tool tip precisely and safely...SMART, which is capable of fine motion control and sensing, could significantly enhance the surgical performance of doctors and minimize surgical accidents.
      In Cyborg Surgeon: Hand and Technology Combine in New Surgical Tool That Enables Superhuman Precision
    2. If it weren't for the stimulus money, we probably would not have been able to go ahead with this for at least another year. This has moved the project forward, and for that I’m grateful.
      In New Optical Tool Could Produce 'Virtual Biopsies' for Brain Cancer
    3. The idea is to provide instant high-resolution pictures of a small segment of the brain without actually touching the tissue. These pictures could let the doctor conduct a ‘virtual biopsy’ to see where the tumor is and whether it is benign or malignant. And when it’s time to cut out the cancer, these images could help a surgeon see and avoid healthy tissue.
      In New Optical Tool Could Produce 'Virtual Biopsies' for Brain Cancer