1. Articles from uspto.gov

    patft.uspto.gov

  2. 1-24 of 2339 1 2 3 4 ... 96 97 98 »
    1. OCT signal processing device and recording medium

      OCT signal processing device and recording medium

      An OCT signal processing device has an acquisition unit for acquiring three or more OCT signals being temporally different from each other with respect to the same position on a subject, from an OCT device that detects an OCT signal based on reflection light of measurement light applied to a subject and reference light corresponding to the measurement light, and a calculation unit for calculating motion contrast based on a plurality of OCT signals. The calculation unit selects two or more sets of OCT signals having different time interval between the OCT signals among sets obtained by extracting a plurality ...

      Read Full Article
      Mentions: Nidek
    2. Systems and methods for automated widefield optical coherence tomography angiography

      Systems and methods for automated widefield optical coherence tomography angiography

      Disclosed are systems and methods for generating wide-field optical coherence tomography angiography (OCTA) images. In embodiments, multiple OCTA scans of a sample are automatically acquired at overlapping locations. The systems and methods include functionality to adaptively control the scanning procedure such that eye blink and eye motion events are detected in real time and accounted for during 3D scan acquisition. Also disclosed are methods for detecting and correcting motion-related artifacts in OCTA datasets which allow for the longer scan times over larger fields of view required for wide-field imaging. These methods may include division of en face angiogram images into ...

      Read Full Article
    3. Neural network system for non-destructive optical coherence tomography

      Neural network system for non-destructive optical coherence tomography

      A system and method for non-destructive optical coherence tomography (OCT) is provided. The system includes: an input interface for receiving OCT data including at least a C-scan; a processing unit executable to detect a feature on a surface or subsurface of the object, trained using a training set and configured to: separate the C-scan into A-scans; using a neural network, successively analyze each A-scan to detect the presence of an A-scan feature associated with the object; separate the C-scan into B-scans; segment each of the B-scans to determine thresholds associated with the object; using a neural network, successively analyze each ...

      Read Full Article
    4. Mapping ciliary activity using phase resolved spectrally encoded interferometric microscopy

      Mapping ciliary activity using phase resolved spectrally encoded interferometric microscopy

      Ciliary motion in the upper airway is the primary mechanism by which the body transports foreign particulate out of the respiratory system. The ciliary beating frequency (CBF) is often disrupted with the onset of disease. Current imaging of ciliary motion relies on microscopy and high speed cameras, which cannot be easily adapted to in-vivo imaging. M-mode optical coherence tomography (OCT) imaging is capable of visualization of ciliary activity, but the field of view is limited.

      Read Full Article
      Mentions: UC Irvine
    5. Compact briefcase OCT system for point-of-care imaging

      Compact briefcase OCT system for point-of-care imaging

      A detector for characterizing at least one of a middle ear fluid and a middle ear biofilm includes a handheld probe outputting near-infrared and visible light, an OCT system to obtain A-scans at a plurality of positions on a tympanic membrane, and a camera to obtain surface sub-images at the plurality of positions. A-scans and surface sub-images are synchronized and the surface sub-images are mosaicked to generate a surface image of the tympanic membrane. Cross-sectional scan images or a thickness map are generated from the synchronized A-scans and segmented to extract a plurality of specified features. The specified features are ...

      Read Full Article
    6. Method of volumetric imaging of a sample

      Method of volumetric imaging of a sample

      The present disclosure provides a method of volumetric imaging of a sample. The method comprises providing a plurality of depth images of a region of interest of the sample using a volumetric imaging system. The region of interest is below a surface area of interest of the sample. Each depth image is associated with a layer or slice of the region of interest and the plurality of depth images together forming a volumetric image of the region of interest. The method further comprises providing a surface image of the surface area of interest of the sample and identifying a surface ...

      Read Full Article
      Mentions: OncoRes Medical
    7. Longitudinal display of coronary artery calcium burden

      Longitudinal display of coronary artery calcium burden

      The present disclosure provides systems and methods to receiving OCT or IVUS image data frames to output one or more representations of a blood vessel segment. The image data frames may be stretched and/or aligned using various windows or bins or alignment features. Arterial features, such as the calcium burden, may be detected in each of the image data frames. The arterial features may be scored. The score may be a stent under-expansion risk.

      Read Full Article
      Mentions: Abbott
    8. Visual field simulation using optical coherence tomography and optical coherence tomographic angiography

      Visual field simulation using optical coherence tomography and optical coherence tomographic angiography

      Disclosed herein are methods for simulating the results of a visual field (VF) test using an optical coherence tomography (OCT) system. The disclosed methods may utilize structural information extracted from OCT image datasets, such as thickness measurements, or may utilize functional information, such as blood perfusion measurements, extracted from OCT angiography (OCTA) image datasets. Other embodiments may be described and claimed.

      Read Full Article
    9. Bonded tunable VCSEL with bi-directional actuation

      Bonded tunable VCSEL with bi-directional actuation

      A MEMS tunable VCSEL includes a membrane device having a mirror and a distal-side electrostatic cavity for displacing the mirror to increase a size of an optical cavity. A VCSEL device includes an active region for amplifying light. Then, a proximal-side electrostatic cavity is defined between the VCSEL device and the membrane device is used to displace the mirror to decrease a size of an optical cavity.

      Read Full Article
    10. Scalable optical coherence tomography imaging device

      Scalable optical coherence tomography imaging device

      An optical coherence tomography imaging device (OCT device) splits laser light emitted from a light source into measurement light for irradiating an object and reference light for irradiating a reference mirror, then analyze the interference light formed by combining scattered measurement light reflected back from the object and reflected reference light reflected from the reference mirror in order to generate tomographic images. An OCT device includes a probe, which is used for irradiating the object with measurement light and collecting scattered measurement light that is reflected back from the object, and an OCT main unit, which includes a light source ...

      Read Full Article
    11. Optical coherence tomography for cancer screening and triage

      Optical coherence tomography for cancer screening and triage

      A device for cancer screening and triage using an optical coherence tomography (OCT) imaging system integrated with optical imaging probe is provided. Endoscopic OCT images are generated using the OCT system having a helical probe. The images are further analyzed to generate a depth resolved intensity OCT signal to classify the region of tissue into variable grades of dysplasia to guide the physician's biopsy or resection.

      Read Full Article
      Mentions: UC Irvine
    12. Ophthalmic imaging apparatus and storage medium

      Ophthalmic imaging apparatus and storage medium

      An ophthalmic imaging apparatus includes an OCT optical system that detects an interference signal between measurement light with which a subject eye is irradiated and reference light, and acquires OCT data of the subject eye by processing the interference signal, a scanner that scans with the measurement light on a scanning line on the subject eye, and a processor.

      Read Full Article
      Mentions: Nidek
    13. Processing apparatus, fingerprint image extraction processing apparatus, system, processing method, and computer readable medium

      Processing apparatus, fingerprint image extraction processing apparatus, system, processing method, and computer readable medium

      A technique for accurately extracting a fingerprint image for accurate authentication from 3D tomographic luminance data of a finger at a high speed. A processing apparatus (11) according to the present disclosure includes means for, after performing edge detection processing on a tomographic image (101, 102, . . . 10 k, . . . , 10n) at each depth, calculating the total number of edge pixels in the tomographic image from 3D (three-dimensional) tomographic luminance data, and acquiring depth dependence of the number of edges (111, 112), and means for extracting a tomographic image having a striped pattern from the depth dependence of the number of edges ...

      Read Full Article
    14. OCT measuring device and OCT measuring method

      OCT measuring device and OCT measuring method

      OCT measuring device in the present exemplary embodiment includes: wavelength sweep light source that emits light of which a wavelength is swept; optical interferometer that divides the light into measurement light and reference light, emits measurement light toward measurement surface of measuring target object, and generates an optical interference intensity signal indicating an intensity of interference between measurement light reflected from measurement surface and reference light; electro-optic element which is a phase modulator arranged in a light path of optical interferometer; measurement processor which is a signal generator that derives a position of measurement surface and generates a phase amount ...

      Read Full Article
      Mentions: Panasonic
    15. Atherectomy catheters with imaging

      Atherectomy catheters with imaging

      An atherectomy catheter includes an elongate flexible catheter body, an elongate deflectable distal tip coupled to the catheter body at a hinge point, a rotatable cutter near the distal end of the catheter body, and a drive shaft extending within the catheter body and configured to rotate the cutter. The atherectomy catheter further includes an optical fiber extending through the drive shaft substantially on-axis with the catheter body and attached to the cutter. The optical fiber is configured to rotate with the drive shaft. The atherectomy catheter further includes a wedge configured to deflect the distal tip away from the ...

      Read Full Article
      Mentions: Avinger
    16. Digitizer for an optical coherence tomography imager

      Digitizer for an optical coherence tomography imager

      A digitizer and processor device for a swept-source optical coherence tomography (SS-OCT) imaging system, comprising: an input configured to receive an OCT signal; a control input configured to receive a k-clock signal; a combiner unit (130) receiving the OCT signal and the k-clock signal configured to output a composite signal; a digitizing unit (60) arranged to convert the composite signal into a digital composite signal (69); a data processing unit (70) arranged to determine a profile of optical density in a sample that generated the OCT signal based on the digital composite signal (69). 2012/0162659 June 2012 Goldberg 2015 ...

      Read Full Article
    17. Photonic integrated receiver

      Photonic integrated receiver

      A wavelength tunable laser device includes a gain element positioned in an optical cavity that provides optical gain to an optical signal. A frequency shifter that generates a frequency shift as a function of time is positioned in the optical cavity. The optical cavity is configured so that a magnitude of the frequency shift as a function of time generated by the frequency shifter is substantially equal to a frequency separation of a cavity mode of the cavity such that an output of the cavity generates laser light having a wavelength that tunes as a function of time.

      Read Full Article
    18. Systems and methods for providing surface contrast to display images for micro-surgical applications

      Systems and methods for providing surface contrast to display images for micro-surgical applications

      Systems and methods for providing surface contrast to display images for micro-surgical applications are disclosed. According to an aspect, an imaging system includes an OCT apparatus configured to capture OCT data of an eye. The OCT image data can include depth-resolved images of reflected light intensity over a period of time. The imaging system also includes a controller configured to determine movement of the eye relative to the OCT imaging field-of-view. The controller may also determine a location within the imaged portion of the eye which tracks with the eye movement. Further, the controller may apply a color gradient to ...

      Read Full Article
      Mentions: Duke University
    19. OCT image processing device and system

      OCT image processing device and system

      The invention belongs to the technical field of OCT and provides an OCT image processing device and system. An FPGA is in communication connection with an upper computer via a PCIE interface to receive OCT image data acquired by the upper computer and to carry out image preprocessing on the OCT image data and then send the OCT image data to the upper computer to display. The OCT image data is acquired and displayed by the upper computer and the OCT image data's preprocessing is implemented by the FPGA, so that the processing efficiency of the OCT image data ...

      Read Full Article
    20. Artificial intelligence for evaluation of optical coherence tomography images

      Artificial intelligence for evaluation of optical coherence tomography images

      A neural network is trained to segment interferogram images. A first plurality of interferograms are obtained, where each interferograms corresponds to data acquired by an OCT system using a first scan pattern, annotating each of the plurality of interferograms to indicate a tissue structure of a retina, training a neural network using the plurality of interferograms and the annotations, inputting a second plurality of interferograms corresponding to data acquired by an OCT system using a second scan pattern and obtaining an output of the trained neural network indicating the tissue structure of the retina that was scanned using the second ...

      Read Full Article
    21. Localized optical coherence tomography images for ophthalmological surgical procedures

      Localized optical coherence tomography images for ophthalmological surgical procedures

      Systems and method are provided which enhance ophthalmological surgical procedures. Systems may include camera(s) configured to capture and magnify eye image(s) (possibly stereoscopic), a tissue position and orientation (P&O) tracker configured in to track a P&O of a specified eye tissue, a tool P&O tracker configured to track a P&O of treatment tool(s) and derive a tool tip pointing vector therefrom, a processing unit configured to calculate an intersection between the tool tip pointing vector and the specified eye tissue and to relate spatially optical coherence tomography (OCT) image(s) of the eye ...

      Read Full Article
    22. Atherectomy catheter

      Atherectomy catheter

      Described herein are atherectomy catheters, systems and methods that include longitudinally displaceable drive shafts that drive actuation of one or more cutters at the distal end of the catheter. The catheters described herein may include one or more imaging sensors for imaging before, during or after cutting tissue. In some variations the imaging sensor may be rotated around the perimeter of the catheter independently of the rotation of the cutter. Also describe herein are imaging catheters that may be used without cutters.

      Read Full Article
      Mentions: Avinger
    23. Intra-oral scanning device with integrated optical coherence tomography (OCT)

      Intra-oral scanning device with integrated optical coherence tomography (OCT)

      An intra-oral scanning device includes a light source and an optical system, and communicates with a display system. The device provides for more efficient transmission and capture of images. It integrates OCT scanning with RGB-based scanning. In operation, the device is used for recording topological characteristics of teeth, dental impressions, or stone models by digital methods and for use in CAD/CAM of dental restorative prosthetic devices. To that end, the RGB-based scan obtains surface data (e.g., a margin), while the OCT scan penetrates the surface. The two scanners operate from within the same physical housing and preferably at ...

      Read Full Article
      Mentions: D4D Technologies
    1-24 of 2339 1 2 3 4 ... 96 97 98 »
  1. Categories

    1. Applications:

      Art, Cardiology, Dentistry, Dermatology, Developmental Biology, Gastroenterology, Gynecology, Microscopy, NDE/NDT, Neurology, Oncology, Ophthalmology, Other Non-Medical, Otolaryngology, Pulmonology, Urology
    2. Business News:

      Acquisition, Clinical Trials, Funding, Other Business News, Partnership, Patents
    3. Technology:

      Broadband Sources, Probes, Tunable Sources
    4. Miscellaneous:

      Jobs & Studentships, Student Theses, Textbooks