1. Canon Medical Systems

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    1. Mentioned In 172 Articles

    2. Three-beam spectral-domain optical coherence tomography for retinal imaging

      Three-beam spectral-domain optical coherence tomography for retinal imaging
      A three-beam spectral domain optical coherence tomography system (OCT) whose center wavelength is 840 nm was developed. The three beams focus on fundus 3.1 mm apart from each other and are detected by a single line sensor. The distance between the beams is fixed and the beams scan a total area of 10 10 mm 2 while keeping this separation during three-dimensional (3-D) measurement. The line rate of the ...
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    3. Optical tomography having path length control based on object position

      Optical tomography having path length control based on object position
      Provided is an optical tomographic imaging apparatus which enables simplification and cost reduction without reducing accuracy when moving part of an object is moved in an optical axis direction of measuring beam. The apparatus using return beam of measuring beam reflected or scattered by an object and reference beam reflected by a reference mirror to image the tomographic image, includes: a reflecting position controlling device for controlling the reflecting position ...
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    4. Large-field high-speed polarization sensitive spectral domain OCT and its applications in ophthalmology

      Large-field high-speed polarization sensitive spectral domain OCT and its applications in ophthalmology
      We present a novel spectral domain polarization sensitive OCT system (PS-OCT) that operates at an A-scan rate of 70 kHz and supports scan angles of up to 40° × 40°. The high-speed imaging allows the acquisition of up to 1024 × 250 A-scans per 3D scan, which, together with the large field of view, considerably increases the informative value of the images. To demonstrate the excellent performance of the new PS-OCT system ...
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    5. Optical coherence tomographic imaging method and optical coherence tomographic imaging apparatus

      Optical coherence tomographic imaging method and optical coherence tomographic imaging apparatus
      An optical tomographic diagnostic apparatus is characterized by executing a first step (S1) to acquire a wavelength spectrum, a second step (S2) to increase the number of elements of the wavelength spectrum, a third step (S3 and S4) to convert the wavelength spectrum into a wavenumber spectrum and to decrease the number of elements to provide a wavenumber spectrum of equal intervals, and a fourth step (S5) to acquire tomographic ...
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    6. Image forming method and optical coherence tomograph apparatus using optical coherence tomography

      Image forming method and optical coherence tomograph apparatus using optical coherence tomography
      An image forming method uses an optical coherence tomography as to an optical axis direction of plural pieces of image information of an object. First image information of an object is obtained at a first focus with respect to an optical axis direction to then object. A focusing position is changed by dynamic focusing from the first focus to a second focus along the optical axis. The second image information ...
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    7. Adaptive optics apparatus and imaging apparatus including the same

      Adaptive optics apparatus and imaging apparatus including the same
      An adaptive optics apparatus includes a first conversion unit configured to convert a polarization direction of one of two polarization components of light to a polarization direction of the other of the polarization components, the light being emitted by a light source; a light modulation unit configured to modulate the two polarization components of light converted by the first conversion unit in the polarization directions that have been converted; a ...
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    8. Imaging control apparatus for capturing tomogram of fundus, imaging apparatus, imaging control method, program, and storage medium

      Imaging control apparatus for capturing tomogram of fundus, imaging apparatus, imaging control method, program, and storage medium
      An imaging control apparatus which controls an imaging unit configured to capture a tomogram of the fundus of a target eye includes an acquisition unit configured to acquire information representing the direction of a fundus movement of the target eye, an analysis unit configured to analyze the direction of the fundus movement based on the information acquired by the acquisition unit, and a control unit configured to control the imaging ...
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    9. Image diversity, shape modification with accommodation, dynamical change with accommodation, and age dependence of the ciliary body imaged by optical coherence tomography

      Image diversity, shape modification with accommodation, dynamical change with accommodation, and age dependence of the ciliary body imaged by optical coherence tomography
      For investigation of accommodation and presbyopia, the ciliary body and its dynamics were imaged with Optical Coherence Tomography (OCT) method. We used two OCT systems; a discretely-swept frequency-comb OCT with a center wavelength at 1.6Ɓ and ultra-fast spectral domain OCT with a center wavelength at 1.3μm. Measurements of dynamical modification of the ciliary body were carried out with ranging in age from 22 to 79. The OCT images ...
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    10. Optical Coherence Tomography And Method Thereof

      Optical Coherence Tomography And Method Thereof
      The image sensing apparatus comprises a first scan unit for scanning light from an OCT light source and light from an SLO light source in a first direction of a test object, and a second scan unit for scanning the light from the OCT light source in a second direction different from the first direction of the test object. The image sensing apparatus acquires tomographic images of the test object ...
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    11. Image Processing Apparatus, Control Method, And Optical Coherence Tomography System

      Image Processing Apparatus, Control Method, And Optical Coherence Tomography System
      In an image processing apparatus, Whether image quality of a tomographic image corresponding to a predetermined position in an imaging target captured by an optical coherence tomography apparatus is within a predetermined range is determined, an instruction whether to permit the image capturing in the predetermined position is issued to the optical coherence tomography apparatus according to a determination that the image quality is out of the predetermined range, and ...
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    12. Image acquisition apparatus and image acquisition method using optical coherence tomography

      Image acquisition apparatus and image acquisition method using optical coherence tomography
      An image acquisition apparatus that uses optical coherence tomography includes a scanning unit provided within a light path that guides signal light to be incident on an examination object towards the examination object and configured to scan the signal light in a main scanning direction; and a control unit configured to control the scanning unit such that an integration time of an optical interference signal per pixel in at least ...
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    13. Optical tomographic imaging method and apparatus

      Optical tomographic imaging method and apparatus
      An optical tomographic imaging method is provided in which light from a light source is split into a measuring beam and a reference beam, the measuring beam being moved by a scanning optical system and guided to an object to be examined, the reference beam being guided to a reference mirror, and in which a tomogram of the object is generated from a return beam of the measuring beam reflected ...
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    14. Optical coherence tomographic imaging apparatus and optical coherence tomographic imaging method

      Optical coherence tomographic imaging apparatus and optical coherence tomographic imaging method
      An optical coherence tomographic imaging apparatus which has a light intensity varying portion provided on a first optical path for guiding a measuring beam to an object for varying an intensity of the measuring beam; an illumination condition varying portion for varying an illumination condition of the measuring beam that has passed through the light intensity varying portion for the object between a first illumination condition in which a center ...
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    15. Tomography Apparatus, Control Method For The Same, Program, And Storage Medium

      Tomography Apparatus, Control Method For The Same, Program, And Storage Medium
      In a tomography apparatus that captures tomograms of a fundus through optical coherence tomography, when a measurement area in which tomograms are to be captured is set on the fundus, tomograms are acquired with use of the optical coherence tomography at a plurality of predetermined positions in the set measurement area, the number of predetermined positions being smaller than in the case of imaging for diagnosis. The acquired tomograms are ...
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    16. 136-150 of 172 « 1 2 ... 7 8 9 10 11 12 »
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  2. About Canon Medical Systems

    Canon Medical Systems

    Cannon Medical Systems Division, U.S.A.  Ophthalmic Systems.  Canon supports synergy between the Company’s retinal camera systems and Optical Coherence Tomography (OCT) products from OPTOPOL Technology S.A.