1. Canon Medical Systems

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    1. Mentioned In 75 Articles

    2. Image capture apparatus and method

      Image capture apparatus and method

      It has been very cumbersome to determine whether or not alignment is required before the fundus image is acquired after the tomographic image is acquired, causing the reduction in diagnostic efficiency. An ophthalmic apparatus is provided to solve this problem, which comprises an irradiation unit that irradiates an eye to be inspected with a first beam for acquiring a tomographic image of the eye and a second beam for acquiring a fundus image of the eye, the second beam having a beam diameter larger than the beam diameter of the first beam; and a determination unit that, based on information ...

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    3. Imaging apparatus and imaging method using optical coherence tomography

      Imaging apparatus and imaging method using optical coherence tomography

      Provided is an imaging apparatus using Fourier-domain optical coherence tomography, the imaging apparatus removing noises caused by the autocorrelation component of returning light to obtain a high-resolution tomographic image. A first switching unit 17 switches a first state in which returning light 12 is combined with reference light (a state in which the returning light 12 is conducted to a combining unit 22) and a second state different from the first state (a state in which the light path of the returning light 12 is blocked or changed). A controlling unit 18 controls the switching unit 17 to change the ...

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    4. Image processing apparatus for processing tomographic image of subject's eye, imaging system, method for processing image, and recording medium

      Image processing apparatus for processing tomographic image of subject's eye, imaging system, method for processing image, and recording medium

      An image processing apparatus includes a detection unit configured to detect layers on the retina based on tomographic images of the retina, an acquisition unit configured to acquire a region having a larger curvature of the boundary surface between the retina and the corpus vitreum than a threshold value, and a determination unit configured to determine an optic disc of the retina based on the optical disc including a region where a specific layer is not detected by the detection unit and the region acquired by the acquisition unit.

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    5. Ophthalmologic image display apparatus, ophthalmologic image display method, program, and storage medium

      Ophthalmologic image display apparatus, ophthalmologic image display method, program, and storage medium

      An ophthalmologic image display apparatus for displaying information about an eye includes an input unit configured to input a tomographic image of the eye, an acquisition unit configured to acquire diagnostic supporting information associated with positional information about the tomographic image of the eye, a processing unit configured to perform processing for assigning a voxel value to volume data constituting the tomographic image based on a reflection intensity value indicating the tomographic image and the diagnostic supporting information, and a display control unit configured to cause a display unit to display an image processed by the processing unit.

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    6. Ophthalmologic apparatus and blood flow velocity calculation method

      Ophthalmologic apparatus and blood flow velocity calculation method

      An ophthalmologic apparatus includes an irradiation unit irradiating a subject's eye with a measuring beam emitted by a scanning unit that performs scanning, a first acquisition unit acquiring a first image of the subject's eye based on the returned measuring beam from the subject's eye when the scanning unit performs scanning in a first sub scanning direction, a second acquisition unit acquiring a second image of the subject's eye based on the returned measuring beam travelling from the subject's eye, at timing different from that for the first image, while the scanning unit performs scanning ...

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    7. Photonic Device And Optical Coherence Tomography Apparatus Including The Photonic Device As Light Source

      Photonic Device And Optical Coherence Tomography Apparatus Including The Photonic Device As Light Source

      Provided is a photonic device in which emission intensity in a short wavelength region is suppressed even in the case of increasing carrier injection density so as to obtain a wide spectrum half-maximum width as well as a high output. The photonic device includes: a first cladding layer; a second cladding layer; and an active layer including an emitting layer and a barrier layer and being provided between the first cladding layer and the second cladding layer, the emitting layer emitting light in a spectrum having a center wavelength λc and a spectrum half-maximum width Δλ, in which at least one ...

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    8. Imaging apparatus and ophthalmic apparatus

      Imaging apparatus and ophthalmic apparatus

      An imaging apparatus for obtaining a tomographic image of an object based on light obtained by combining returning light from the object, which is irradiated with measurement light, and reference light corresponding to that measurement light, the imaging apparatus comprising: a reference light splitting unit adapted to split the reference light into a plurality of reference light beams of different wavelength ranges, and a plurality of dispersion compensation units adapted to compensate dispersion in accordance with wavelength ranges of the plurality of reference light beams, the dispersion compensation units being provided in respective light paths of the plurality of reference ...

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    9. Schematic eye and adjustment method and evaluation method for optical coherence tomography apparatus

      Schematic eye and adjustment method and evaluation method for optical coherence tomography apparatus

      A schematic eye is used for the evaluation of the optical system of an optical coherence tomography apparatus which captures a tomogram of the fundus. The eye includes a first optical member which irradiated light from the optical system strikes and a second optical member which irradiated light from the first optical member strikes. A plurality of layers having different scattering intensities in the incident direction of irradiated light are formed on the second optical member.

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    10. Light Source And Optical Coherence Tomography Apparatus Including The Light Source

      Light Source And Optical Coherence Tomography Apparatus Including The Light Source

      A light source includes an upper electrode layer, a lower electrode layer, and an active layer interposed therebetween. At least one of the upper and lower electrode layers is divided into a plurality of electrodes separated from each other in an in-plane direction of the active layer. The separated electrodes independently inject current into a plurality of different regions in the active layer. The light source emits light by injecting current from the upper and lower electrode layers into the active layer, guide the light in the in-plane direction, and output the light. The plurality of different regions in the ...

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    11. Optical Semiconductor Device, Driving Method Thereof, And Optical Coherence Tomography Apparatus Having The Optical Semiconductor Device

      Optical Semiconductor Device, Driving Method Thereof, And Optical Coherence Tomography Apparatus Having The Optical Semiconductor Device

      The present invention provides an optical semiconductor device which can make a wavelength band of emitted light wider than that of a conventional optical semiconductor device. The optical semiconductor device includes: an active layer including a multiple quantum well structure; and at least one electrode pair for injecting an electric current into the active layer, wherein the multiple quantum well structure has a first quantum well and a second quantum well which is different from the first quantum well, and the first quantum well and the second quantum well are mutually different in at least two out of a composition ...

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    12. Optical tomographic imaging apparatus and imaging method for optical tomographic image

      Optical tomographic imaging apparatus and imaging method for optical tomographic image

      Provided are an optical tomographic imaging apparatus and an imaging method for an optical tomographic image, in which high measurement sensitivity and high lateral resolution of a specific portion of an object may be obtained with a simple structure. The optical tomographic imaging apparatus of a Fourier-domain method includes: an optical path length adjustment portion for adjusting an optical path length of the reference beam; a position adjustment portion for adjusting a position of a focusing device for focusing the measuring beam onto the object; and a drive control portion for controlling drive of the optical path length adjustment portion ...

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    13. Reproducibility of disc and macula optical coherence tomography using the Canon OCT-HS100 as compared with the Zeiss Cirrus HD-OCT

      Reproducibility of disc and macula optical coherence tomography using the Canon OCT-HS100 as compared with the Zeiss Cirrus HD-OCT

      Purpose: In a clinical setting, the usefulness of optical coherence tomography (OCT) is strongly dependent on reproducibility of the measurement. The aim of the present study was to evaluate macula and optic disc measurement reproducibility with the new spectral-domain OCT (SD-OCT) from Canon (Canon OCT-HS100) and to compare reproducibility and obtained measurements with the Zeiss Cirrus HD-OCT. Methods: Macula and optic disc parameters from the right eyes of 31 subjects were obtained twice with both instruments. Interoperator reproducibility was evaluated by use of the coefficient of repeatability (CR), and the obtained measurements were compared between the instruments. Results: No difference ...

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    14. Tomographic imaging method and tomographic imaging apparatus

      Tomographic imaging method and tomographic imaging apparatus

      Provided is a tomographic imaging method, which acquires tomographic images of an object to be inspected, based on combined beams respectively acquired by combining reference beams and return beams acquired by irradiating the object to be inspected with a plurality of measuring beams. The tomographic imaging method includes a first step of acquiring the respective combined beams by reflecting information regarding the plurality of measuring beams which is stored in advance and irradiating the object to be inspected with the plurality of measuring beams, and a second step of generating the tomographic images based on the respective combined beams.

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    15. Image processing apparatus and image processing system for displaying information about ocular blood flow

      Image processing apparatus and image processing system for displaying information about ocular blood flow

      An image processing apparatus includes an identification unit configured to identify a retinal blood vessel based on a retinal image, a measurement unit configured to measure blood flow information for the blood vessel based on the retinal image, and a display control unit configured to display the measured blood flow information by at least one selected from a depth of the identified blood vessel, a size of the identified blood vessel, and a combination of both.

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    16. Laser apparatus, driving method of the same and optical tomographic imaging apparatus

      Laser apparatus, driving method of the same and optical tomographic imaging apparatus

      The present invention provides a laser apparatus capable of improving a scan speed and achieving a scan rate equal to or more than 1 MHz, and an optical tomographic imaging apparatus using the laser apparatus as a light source. The laser apparatus includes a ring resonator, the ring resonator having a structure in which a first modulator, a normal dispersion region, a second modulator and an anomalous dispersion region are arranged in this order, and in this arrangement, a gain medium is included, and being configured so that modulation with respect to the second modulator can be caused to be ...

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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.