1. Nagoya University

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    1. Mentioned In 63 Articles

    3. High-spatial-resolution deep tissue imaging with spectral-domain optical coherence microscopy in the 1700-nm spectral band

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      High-spatial-resolution deep tissue imaging with spectral-domain optical coherence microscopy in the 1700-nm spectral band
      We present three-dimensional (3-D) high-resolution spectral-domain optical coherence microscopy (SD-OCM) by using a supercontinuum (SC) fiber laser source with 300-nm spectral bandwidth (full-width at half-maximum) in the 1700-nm spectral band. By using low-coherence interferometry with SC light and a confocal detection scheme, we realized lateral and axial resolutions of 3.4 and 3.8m in tissue ( n =1.38), respectively. This is, to the best of our knowledge, the highest ...
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      Mentions: Nagoya University Norihiko Nishizawa

    5. Automated Detection of Macular Diseases by Optical Coherence Tomography and Artificial Intelligence Machine Learning of Optical Coherence Tomography Images

      Explore Hindawi Publishing Corporation Ophthalmology
      Automated Detection of Macular Diseases by Optical Coherence Tomography and Artificial Intelligence Machine Learning of Optical Coherence Tomography Images
      Purpose . Although optical coherence tomography (OCT) is essential for ophthalmologists, reading of findings requires expertise. The purpose of this study is to test deep learning with image augmentation for automated detection of chorioretinal diseases. Methods . A retina specialist diagnosed 1,200 OCT images. The diagnoses involved normal eyes ( ) and those with wet age-related macular degeneration (AMD) ( ), diabetic retinopathy (DR) ( ), epiretinal membranes (ERMs) ( ), and another 19 diseases. Among them, 1,100 ...
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      Mentions: Nagoya University

    6. Collateral vessels on optical coherence tomography angiography in eyes with branch retinal vein occlusion

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      Collateral vessels on optical coherence tomography angiography in eyes with branch retinal vein occlusion
      Aims To detect collateral vessels using optical coherence tomography angiography (OCTA) in eyes with branch retinal vein occlusion (BRVO) and to investigate the associations with visual outcomes and macular oedema. Methods Eyes with macular oedema secondary to BRVO that underwent OCTA at baseline and were followed up for more than 6 months were enrolled. The presence of collaterals, whether the collaterals were leaky or not, and the associations with visual ...
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      Mentions: Nagoya University

    7. Changes in choriocapillaris and retinal morphology after laser photocoagulation by OCT angiography

      Explore LWW Online Ophthalmology
      Changes in choriocapillaris and retinal morphology after laser photocoagulation by OCT angiography
      Rationale: Earlier studies have shown that laser photocoagulation treatments are associated with good long-term visual acuity in most patients with severe nonproliferative diabetic retinopathy (S-NPDR). Histopathologic studies of autopsied eyes have demonstrated defects in the choriocapillaris beneath the retinal laser lesions secondary to photocoagulation for S-NPDR. These lesions have been observed to expand centrifugally over time especially in the posterior pole, and the atrophy of the retinal pigment epithelium (RPE ...
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      Mentions: Nagoya University

    8. CHARACTERISTICS AND CLASSIFICATION OF TYPE 3 NEOVASCULARIZATION WITH B-SCAN FLOW OVERLAY AND EN FACE FLOW IMAGES OF OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY

      Explore LWW Online Ophthalmology
      CHARACTERISTICS AND CLASSIFICATION OF TYPE 3 NEOVASCULARIZATION WITH B-SCAN FLOW OVERLAY AND EN FACE FLOW IMAGES OF OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY
      Purpose: To study B-scan flow overlay and en face flow optical coherence tomography angiography (OCT-A) images of Type 3 neovascularization (NV) and to characterize a staging system for Type 3 NV based on the OCT-A findings. Methods: We retrospectively collected data on consecutive treatment-naive eyes with Type 3 NV. All eyes underwent fluorescein angiography, indocyanine green angiography, structural spectral domain OCT, and OCT-A (AngioPlex). Localization and extension of abnormal flows ...
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      Mentions: Nagoya University

    9. Association of Foveal Avascular Zone Enlargement and Diabetic Retinopathy Progression Using Optical Coherence Tomography Angiography

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      Association of Foveal Avascular Zone Enlargement and Diabetic Retinopathy Progression Using Optical Coherence Tomography Angiography
      Purpose: The purpose of this article is to evaluate long-term change of the foveal avascular zone (FAZ) area in diabetic eyes using optical coherence tomography angiography (OCTA) (AngioVue, Avanti OCT, Optovue). Methods: A retrospective chart review was conducted of patients who had undergone OCTA fundus examinations with at least 12 months of follow-up. Eyes with previous laser photocoagulation and antivascular endothelial growth factor treatments were excluded. ImageJ software was used ...
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      Mentions: Optovue Nagoya University

    10. Wavelength Dependence of Ultrahigh-Resolution Optical Coherence Tomography Using Supercontinuum for Biomedical Imaging

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      Wavelength Dependence of Ultrahigh-Resolution Optical Coherence Tomography Using Supercontinuum for Biomedical Imaging
      Optical coherence tomography (OCT) is a noninvasive cross-sectional imaging technique with micrometer resolution. The theoretical axial resolution is determined by the center wavelength and bandwidth of the light source, and the wider the bandwidth, the higher the axial resolution. The characteristics of OCT imaging depend on the optical wavelength used. In this paper, we investigated the wavelength dependence of ultrahigh-resolution (UHR) OCT using a supercontinuum for biomedical imaging. Wideband, high-power ...
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      Mentions: Nagoya University Norihiko Nishizawa Hiroyuki Kawagoe

    11. Macular displacement after vitrectomy in eyes with idiopathic macular hole determined by optical coherence tomography angiography

      Explore American Journal of Ophthalmology Ophthalmology
      Macular displacement after vitrectomy in eyes with idiopathic macular hole determined by optical coherence tomography angiography
      Purpose To determine whether the macula is displaced after vitrectomy with internal limiting membrane (ILM) peeling in eyes with an idiopathic macular hole. Design A retrospective, observational case series Methods Optical coherence tomography angiography (OCTA) was used to obtain 3 mm 3 mm en face images before and 2, 4, and 8 weeks after the vitrectomy with ILM peeling for 20 eyes of 20 patients with an idiopathic macular hole ...
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      Mentions: Nagoya University

    12. Quantification of Macular Microvascular Changes in Patients With Retinitis Pigmentosa Using Optical Coherence Tomography Angiography

      Explore IOVS Journal Ophthalmology
      Quantification of Macular Microvascular Changes in Patients With Retinitis Pigmentosa Using Optical Coherence Tomography Angiography
      Purpose : To evaluate the microvascular changes in eyes with RP quantitatively using optical coherence tomography angiography (OCTA) and to determine whether the correlations between these indices and the severity of RP are significant. Methods : This was a retrospective, observational study. The medical records of 53 RP patients and 46 controls were reviewed. The OCTA images were obtained with the Cirrus 5000 with Angioplex, and an automated program was used to ...
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      Mentions: Nagoya University

    13. The combination assessment of lipid pool and thrombus by optical coherence tomography can predict the filter no-reflow in primary PCI for ST elevated myocardial infarction

      Explore LWW Online Cardiology
      The combination assessment of lipid pool and thrombus by optical coherence tomography can predict the filter no-reflow in primary PCI for ST elevated myocardial infarction
      The usefulness of distal protection devices is still controversial. Moreover, there is no report on thrombus evaluation by using optical coherence tomography (OCT) for determining whether to use a distal protection device. The aim of the present study was to investigate the predictor of filter no-reflow (FNR) by using OCT in primary percutaneous coronary intervention (PCI) for ST-elevated acute myocardial infarction (STEMI). We performed preinterventional OCT in 25 patients with ...
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      Mentions: Nagoya University

    14. OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY OF THE FOVEAL AVASCULAR ZONE IN CHILDREN WITH A HISTORY OF TREATMENT-REQUIRING RETINOPATHY OF PREMATURITY

      Explore LWW Online Ophthalmology
      OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY OF THE FOVEAL AVASCULAR ZONE IN CHILDREN WITH A HISTORY OF TREATMENT-REQUIRING RETINOPATHY OF PREMATURITY
      Purpose: To examine the characteristics of the foveal vascular structure of patients with retinopathy of prematurity (ROP) by optical coherence tomography angiography. Methods: Ten patients with a history of laser photocoagulation or cryopexy treatment for Stage 3 (Zone II) ROP and 10 normal subjects (controls) were included. Foveal avascular zone, vessel density, vessel length, and vascular diameter index were measured by optical coherence tomography angiography using the 3 3-mm Early ...
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      Mentions: Nagoya University Kei Takayama

    15. Axial resolution and signal-to-noise ratio in deep-tissue imaging with 1.7-μm high-resolution optical coherence tomography with an ultrabroadband laser source

      Explore SPIE | Journal Broadband Sources
      Axial resolution and signal-to-noise ratio in deep-tissue imaging with 1.7-μm high-resolution optical coherence tomography with an ultrabroadband laser source
      We investigated the axial resolution and signal-to-noise ratio (SNR) characteristics in deep-tissue imaging by 1.7 - m 1.7-m optical coherence tomography (OCT) with the axial resolution of 4.3 m 4.3m in tissue. Because 1.7 - m 1.7-m OCT requires a light source with a spectral width of more than 300 nm full-width at half maximum to achieve such high resolution, the axial resolution in the tissue ...
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      Mentions: Nagoya University Norihiko Nishizawa Hiroyuki Kawagoe

    16. Extraction of membrane structure in eyeball from MR volumes

      Explore Conference Proceedings Ophthalmology
      Extraction of membrane structure in eyeball from MR volumes
      This paper presents an accurate extraction method of spherical shaped membrane structures in the eyeball from MR volumes. In ophthalmic surgery, operation field is limited to a small region. Patient specific surgical simulation is useful to reduce complications. Understanding of tissue structure in the eyeball of a patient is required to achieve patient specific surgical simulations. Previous extraction methods of tissue structure in the eyeball use optical coherence tomography (OCT ...
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      Mentions: University of Tokyo Nagoya University
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  4. About Nagoya University

    Nagoya University

    Nagoya University is a Japanese national university headquartered in Chikusa-ku, Nagoya. It is one of the former 9 imperial universities. Nagoya University began its history in 1871 with its temporary hospital standing on a site where the conference chamber for the former Nagoya clan once stood, and the temporary medical school standing on a site where the magistrate's office for the former Nagoya clan once stood. Thereafter, many transitions took place, and the Aichi Medical College was established in 1920. In 1931, the management of the Aichi Medical College was transferred to the national government and the Nagoya Medical College was newly established in the same year. In 1939, the Nagoya Imperial University was established with the addition of the School of Science and Engineering and the School of Medicine, thus absorbing the Nagoya Medical College.

  5. Related Topics

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    2. Ultrahigh resolution optical coherence tomography using high power fiber laser supercontinuum at 1.7 μm wavelength region
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    3. In vivo Ultrahigh-Resolution Ophthalmic Optical Coherence Tomography Using Gaussian-Shaped Supercontinuum
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    4. Real-Time Imaging of Rabbit Retina with Retinal Degeneration by Using Spectral-Domain Optical Coherence Tomography
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