1. Articles in category: Patents

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    1. Systems and methods for fiber-based visible and near infrared optical coherence tomography

      Systems and methods for fiber-based visible and near infrared optical coherence tomography

      A system for analyzing a tissue sample includes two wavelength-division multiplexers and a fiber coupler. The first wavelength-division multiplexer combines visible and near infrared electromagnetic radiation and directs the combined electromagnetic radiation to the fiber coupler. The fiber coupler emits a sample beam of visible and near infrared electromagnetic radiation toward a tissue sample, and a reference beam of visible and near infrared electromagnetic radiation toward a reference mirror. The sample beam reflects off the tissue sample back to the fiber coupler. The reference beam reflects off the reference mirror back to the fiber coupler. The fiber coupler combines the ...

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      Mentions: Ji Yi
    2. Methods to improve axial resolution in optical coherence tomography

      Methods to improve axial resolution in optical coherence tomography

      Methods are proposed to improve axial resolution in optical coherence tomography (OCT). In one aspect, the method comprises: obtaining a k-space interferogram of an OCT spectral image; uniformly reshaping the k-space interferogram to a quasi-stationary interferogram by extracting a source envelope; fitting a spectral estimation model to the quasi-stationary interferogram; and calculating an axial depth profile using the fitted spectral estimation model.

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    3. Adjustable depth of field optical coherence tomography

      Adjustable depth of field optical coherence tomography

      A system and method for surface inspection of an object using optical coherence tomography (OCT) is provided. The method includes determining a first working distance; determining a first depth of field, based on the first working distance; changing the depth of field to the first depth of field; performing an A-scan of the object; moving the object; determining a subsequent working distance; determining whether the object is in focus at the subsequent working distance, if the object is not in focus: determining a subsequent depth of field based on the subsequent working distance; changing the depth of field to the ...

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    4. Whole eye optical coherence tomography (OCT) imaging systems and related methods

      Whole eye optical coherence tomography (OCT) imaging systems and related methods

      Whole eye optical coherence tomography (OCT) imaging systems and related methods are disclosed. According to an aspect, an OCT imaging system includes a source having an associated source arm path. Further, the OCT imaging system includes a reference arm coupled to the source arm. Further, the OCT imaging system includes a sample arm having an associated sample arm path and coupled to the source arm. The sample arm includes at least one optical component configured to simultaneously scan both an anterior and posterior portion of an eye of a subject.

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    5. J&J Sues Alcon Over Patents for Laser Eye Surgery

      J&J Sues Alcon Over Patents for Laser Eye Surgery

      J&J’s Amo Development unit claims Alcon’s LenSx system infringes a dozen patents for the use of lasers in cataract surgery. AMO said it “revolutionized cataract surgery” through the use of advanced imaging technology called optical coherence tomography, which allows surgeons to control the laser when accessing the diseased lens so it can be removed and replaced with an artificial one It has enabled cataract surgery “to be performed precisely, consistently and safely,” according to the complaint filed Tuesday in federal court in Wilmington, Del. NOTE: Patented technology is used in J&J Surgical Vision’s Catalys Precision ...

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      Mentions: Alcon
    6. Systems and methods for performing phase-sensitive acoustic vibrations using optical coherence tomography

      Systems and methods for performing phase-sensitive acoustic vibrations using optical coherence tomography

      Systems and methods are provided for performing phase-sensitive optical coherence tomographic (PS-OCT) measurements involving the vibrographic response of an acoustic stimulus. Detected signals are processed to provide sampled time-dependent vibrographic data characterizing a vibratory amplitude and phase response over one or more periods of the acoustic stimulus. The sampled time-dependent vibrographic data is processed to suppress the sinusoidal signal component associated with the acoustic stimulus, thereby providing a residual data associated with noise. The residual data is processed to obtain an estimate of the motion noise, and the motion noise is subtracted from the sampled time-dependent vibrographic data in order ...

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    7. Aqua Licensing LLC Retained to Explore the Sale of of the Compact Imaging OCT Patent Portfolio

      Aqua Licensing LLC Retained to Explore the Sale of of the Compact Imaging OCT Patent Portfolio

      Aqua Licensing LLC has been retained to explore the sale of of the Compact Imaging OCT patent portfolio. This patent portfolio is developed, owned and offered for sale by Compact Imaging, Inc., the developers of MRO™ (multiple reference OCT) technology. The portfolio anticipated the development of features that are now market standard in Optical Coherence Tomography (“OCT”) and Fundus imaging devices and applications. These features are deployed industry-wide in ophthalmology and have become the clinical standard of care in ophthalmic diagnostic imaging. Claim charts are available under NDA that illustrate the reads on products with covered revenue in excess of ...

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    8. Ophthalmic photothermal optical coherence tomography apparatus

      Ophthalmic photothermal optical coherence tomography apparatus

      An optical coherence tomography system for ophthalmic use identifies tissue by selected laser heating of that tissue at reduced power levels decreasing background noise to boost signal-to-noise ratio allowing detection of minute changes in thermal expansion caused by that heating at clinically acceptable levels

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    9. Encoder for optical coherence tomography scanner

      Encoder for optical coherence tomography scanner

      Disclosed is an optical coherence tomography scanner and a method for recording sub-surface scans of an object, wherein a position encoder is arranged in the path of the probing beam of an interferometric system. The encoder pattern is detected in a sequence of A scans at generated for different probing beam positions on the scanned object, the probing beam position and/or inclination for at least one A scan of said sequence of A scans is deducing based on the detected encoder pattern, and the sub-surface scan of the object is generated based on the sequence of A scans taking ...

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    10. Surgical system having an OCT device

      Surgical system having an OCT device

      A system for performing a surgical procedure includes an OCT unit for scanning an object region volume with an OCT scanning beam and a control unit for setting the position of the object region volume. A surgical instrument having an effective section is arrangeable in an object region of the object region volume and is localizable in the object region volume with the OCT unit. A computer unit has a first computer program for determining the position of the effective section by processing scan information obtained by scanning the object region volume and a second computer program compares the scan ...

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    11. Apparatus for angiographic optical coherence tomography in retina or choroid, and method for diagnosing diseases by using same

      Apparatus for angiographic optical coherence tomography in retina or choroid, and method for diagnosing diseases by using same

      The present disclosure relates to an apparatus for angiographic optical coherence tomography in the retina or the choroid, and a method for diagnosing diseases by using the same and, more specifically, to: an apparatus for angiographic optical coherence tomography in the retina and the choroid, capable of diagnosing, at an early stage, shock states or diseases such as those of sepsis by quickly and objectively recognizing the low perfusion of tissue; and a diagnostic method using the same.

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    12. Device and system for doppler optical coherence tomography (OCT) of the human middle ear

      Device and system for doppler optical coherence tomography (OCT) of the human middle ear

      A device for Doppler optical coherence tomography (Doppler OCT), preferably of the human middle ear, is proposed. The device has an endoscope unit for at least partial insertion into the auditory canal. A sound source, a sound receiver, and OCT optics are integrated in the endoscope unit.

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    13. Ophthalmic analysis apparatus and ophthalmic analysis method

      Ophthalmic analysis apparatus and ophthalmic analysis method

      Abstract An ophthalmic analysis apparatus for analyzing OCT motion contrast (MC) image data of a subject's eye acquired using an OCT apparatus for ophthalmology includes analysis process means for analyzing the OCT MC image data, in which the analysis process means generates OCT blood vessel change data including temporal change information in relation to a blood vessel region of the subject's eye based on first OCT MC image data and second OCT MC image data acquired at mutually different times.

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      Mentions: Nidek
    14. Computerized device and method for processing image data

      Computerized device and method for processing image data

      A computerized device for processing image data is proposed. The computerized device comprises a receiving unit which is configured to receive optical coherence tomography data of a of a tissue, in particular of a retina, a providing unit which is configured to provide a convolutional neural network for processing the optical coherence tomography data, and a processing unit which is configured to process the received optical coherence tomography data using the convolutional neural network for identifying at least one certain object in the tissue.

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    15. Optical coherence tomography system using polarization switching

      Optical coherence tomography system using polarization switching

      Optical coherence tomography (OCT) systems using a polarization switch and/or a polarization beam splitter are generally described. In an example, an OCT system includes a light source configured to emit a beam and an interferometer configured to receive the beam. The interferometer includes a reference path and an interferometer sample path. The OCT system further includes a polarization switch configured to selectively change a polarization state of the beam and a lens system that includes a first sample path and a second sample path. The polarization switch is further configured to direct the beam onto the first sample path ...

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    16. Sources of optical radiation and methods for providing low-speckle optical radiation, and systems and methods using them

      Sources of optical radiation and methods for providing low-speckle optical radiation, and systems and methods using them

      The present disclosure relates more particularly to active optical fibers, amplified spontaneous emission (ASE) sources using such active optical fibers, and imaging and detection systems and methods using such ASE sources. In one aspect, the disclosure provides an active optical fiber that includes a rare earth-doped gain core configured to emit radiation at at least a peak wavelength emitted wavelength when pumped with pump radiation having a pump wavelength; a pump core surrounding the gain core; and a cladding surrounding the pump core, wherein the value M=16R.sup.2(NA).sup.2/.lamda..sup.2 in which R is ...

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    17. Microangiography method and system based on full-space modulation spectrum splitting and angle compounding

      Microangiography method and system based on full-space modulation spectrum splitting and angle compounding

      A microangiography method and system based on full-space modulation spectrum splitting and angle compounding is disclosed. Label-free three-dimensional optical coherence tomography angiography is realized by combining the three-dimensional space resolution capability of an optical coherence tomography and the motion recognition capability of a dynamic scattering technology. Probe light of different incident angles is encoded with a transverse scanning modulation spectrum in a spatial frequency domain, incident angle-resolved sub-angiograms which are independent of one another are obtained by splitting the modulation spectrum, and an angiogram with multiple space angles compounded is realized. Conjugate mirror images are removed from a depth (z ...

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    18. Systems and methods for eye tracking for motion corrected ophthalmic optical coherence tomography

      Systems and methods for eye tracking for motion corrected ophthalmic optical coherence tomography

      Systems and methods for eye tracking for motion corrected ophthalmic optical coherence tomography (OCT) are disclosed. According to an aspect, an imaging system includes an eye tracking device configured to determine movement of an eye. The imaging system also includes an OCT apparatus configured to generate OCT images of a retina of the eye. The OCT apparatus includes a scanner operable to be moved for relocating an OCT scan pivot at a pupil plane for image capture and during capture of the OCT images. The imaging system also includes a controller configured to control the scanner to relocate the OCT ...

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    19. Linear sensor for a spectroscopic optical coherence tomography imaging apparatus

      Linear sensor for a spectroscopic optical coherence tomography imaging apparatus

      The invention provides a linear sensor including a row 100 of N regularly spaced pixels that are formed in a semiconductor substrate, and a circuit for reading out the N pixels, which delivers an output signal for each of the N pixels of the row, characterized in that the N pixels comprise image-capturing pixels that have a useful photosensitive area in the shape of a rectangle R that is higher than it is wide, where the width is in the direction of the row and the height is in the perpendicular direction, and at least two spaced-apart pairs of alignment-detecting ...

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    20. Systems and methods for optimizing focus for imaging-based overlay metrology

      Systems and methods for optimizing focus for imaging-based overlay metrology

      Methods and systems for focusing and measuring by mean of an interferometer device, having an optical coherence tomography (OCT) focusing system, by separately directing an overlapped measurement and reference wavefront towards a focus sensor and towards an imaging sensor; where a predefined focusing illumination spectrum of the overlapped wavefront is directed towards the focus sensor, and where a predefined measurement illumination spectrum of the overlapped wavefront is directed towards the imaging sensor. Methods and systems for maintaining focus of an interferometer device, having an OCT focusing system, during sample's stage moves.

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    21. Home OCT with automatic focus adjustment

      Home OCT with automatic focus adjustment

      An optical coherence tomography (OCT) system for imaging a retina applies a user specific focus correction to focus a sample arm light beam on the user's retina. An OCT image detector generates an OCT signal. A control unit monitors the OCT signal, controls a reference arm optical path length adjustment mechanism to identify a length of the reference arm optical path for which the OCT signal corresponds to an OCT image of the retina, and varies an operational parameter of the sample arm light beam focus mechanism over a range, while maintaining the length of the reference arm optical ...

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      Mentions: Notal Vision
    22. Systems, methods and apparatus for determining a fractional flow reserve (FFR) based on the minimum lumen area (MLA) and the constant

      Systems, methods and apparatus for determining a fractional flow reserve (FFR) based on the minimum lumen area (MLA) and the constant

      n one aspect, the invention relates to system comprising: a processor configured to receive a first optical coherence tomography (OCT) data set obtained during a pullback of a data collection probe along a first length of a first blood vessel; determine a minimum lumen area disposed along the first length using the first OCT data set; and determine a first FFR value along the first length based on the minimum lumen area. In one embodiment, the first FFR value is an estimated FFR. In another aspect, the invention relates to a method that includes measuring, using OCT, the area of ...

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    23. Device and methods for color corrected OCT imaging endoscope/catheter to achieve high-resolution

      Device and methods for color corrected OCT imaging endoscope/catheter to achieve high-resolution

      The present invention is directed to an achromatic endoscope which employs a diffractive microlens. Along with a broadband rotary joint and a custom 800 nm SD-OCT system, ultrahigh-resolution 3D volumetric imaging over a large area becomes possible. The diffractive microlens can be used directly with a GRIN lens, making the endoscope design simpler and cost effective. Preliminary ex vivo 3D intraluminal imaging was performed with the endoscope in conjunction with a home-built broadband rotary joint and a spectral-domain OCT system, demonstrating the performance of the diffractive endoscope. Considering the miniature OCT imaging probe is the required component for using the ...

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    24. Intravascular imaging and guide catheter detection methods and systems

      Intravascular imaging and guide catheter detection methods and systems

      In part, the disclosure relates to computer-based methods, devices, and systems suitable for detecting a delivery catheter using intravascular data. In one embodiment, the delivery catheter is used to position the intravascular data collection probe. The probe can collect data suitable for generating one or more representations of a blood vessel with respect to which the delivery catheter can be detected.

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      Mentions: Abbot
    1-24 of 2606 1 2 3 4 ... 107 108 109 »
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