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    1. Mentioned In 55 Articles

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

      Explore IEEE Xplore Broadband Sources
      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

    3. 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

    4. 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

    5. 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

    6. 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

    7. 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

    8. 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

    9. Full-range ultrahigh-resolution spectral-domain optical coherence tomography in 1.7 µm wavelength region for deep-penetration and high-resolution imaging of turbid tissues

      Explore IOPscience
      Full-range ultrahigh-resolution spectral-domain optical coherence tomography in 1.7 µm wavelength region for deep-penetration and high-resolution imaging of turbid tissues
      For the first time, we developed a full-range ultrahigh-resolution (UHR) spectral-domain optical coherence tomography (SD-OCT) technique working in the 1.7 m wavelength region. This technique allowed high-resolution, deep-tissue imaging. By using a supercontinuum source operating at a wavelength of 1.7 m, an axial resolution of 3.6 m in a tissue specimen was achieved. To enhance the imaging depth of UHR-SD-OCT, we performed full-range OCT imaging based on ...
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      Mentions: Shuichi Makita Yoshiaki Yasuno University of Tsukuba

    10. Preoperative optical coherence tomography visualization of epiretinal membranes enhances surgical strategies

      Explore Medical Journals Publisher Ophthalmology
      Preoperative optical coherence tomography visualization of epiretinal membranes enhances surgical strategies
      Purpose: The aim of this study was to evaluate the usefulness of preoperative optical coherence tomography (OCT) findings in patients with macular epiretinal membrane (ERM) for the planning of surgical strategy. Patients and methods: One hundred twenty-three eyes of 121 patients (49 men, 72 women; mean age, 66 years) with an idiopathic ERM were enrolled. All patients underwent an ophthalmic examination including indirect ophthalmoscopy and OCT (Cirrus HD-OCT 4000 and ...
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      Mentions: Nagoya University

    11. Retinal Hemodynamics Seen on Optical Coherence Tomography Angiography Before and After Treatment of Retinal Vein Occlusion

      Explore IOVS Journal Ophthalmology
      Retinal Hemodynamics Seen on Optical Coherence Tomography Angiography Before and After Treatment of Retinal Vein Occlusion
      Purpose : This study evaluates the retinal hemodynamics using optical coherence tomography angiography (OCTA) before and after antivascular endothelial growth factor (VEGF) therapy in patients with macular edema associated with retinal vein occlusion (RVO). Methods : Twelve patients (23 eyes; mean age, 64 years) were included (eight eyes with branch RVO, four with central RVO, and 11 unaffected fellow eyes. The best-corrected visual acuity (BCVA) and central retinal thickness (CRT) were measured ...
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      Mentions: Nagoya University

    12. Wideband ultrafast fiber laser sources for OCT and metrology

      Explore IOPscience Broadband Sources
      Wideband ultrafast fiber laser sources for OCT and metrology
      Fiber lasers, which use optical fibers as ideal waveguides, have been attracting a great deal of attention as stable, practical, and maintenance-free lasers. Using a combination of an ultrashort-pulse fiber laser and a nonlinear fiber, we can realize wideband highly functional ultrafast fiber laser sources. The generation of ultrashort pulses with wide wavelength tunability and supercontinua based on fiber lasers and nonlinear fibers has been demonstrated. These techniques are useful ...
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      Mentions: Nagoya University Norihiko Nishizawa

    13. Development of a Fiber-Optic Optical Coherence Tomography Probe for Intraocular Use

      Explore IOVS Journal
      Development of a Fiber-Optic Optical Coherence Tomography Probe for Intraocular Use
      Purpose : To evaluate the performance of a newly developed 23-G optical coherence tomography (OCT) probe in animal and human eyes. Methods : The probe is a side-imaging OCT device with a scanning beam set 43 to the optical axis and a working distance of 1.5 to 2.0 mm. The performance of the OCT probe was tested during vitrectomy in porcine cadaver eyes and rabbit eyes in situ. Optical coherence ...
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      Mentions: Nagoya University Norihiko Nishizawa

    14. Optical coherence microscopy in 1700 nm spectral band for high-resolution label-free deep-tissue imaging

      Explore Nature Publishing Group
      Optical coherence microscopy in 1700 nm spectral band for high-resolution label-free deep-tissue imaging
      Optical coherence microscopy (OCM) is a label-free, high-resolution, three-dimensional (3D) imaging technique based on optical coherence tomography (OCT) and confocal microscopy. Here, we report that the 1700-nm spectral band has the great potential to improve the imaging depth in high-resolution OCM imaging of animal tissues. Recent studies to improve the imaging depth in OCT revealed that the 1700-nm spectral band is a promising choice for imaging turbid scattering tissues due ...
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      Mentions: Nagoya University Norihiko Nishizawa Hiroyuki Kawagoe

    15. Investigation of the Etiology of Central Serous Chorioretinopathy Using En-Face Optical Coherence Tomography and Indocyanine Green Angiography

      Explore Karger Publishers Ophthalmology
      Investigation of the Etiology of Central Serous Chorioretinopathy Using En-Face Optical Coherence Tomography and Indocyanine Green Angiography
      Purpose: To identify locations of hypofluorescent lesions on late-phase indocyanine green angiography (ICGA) in patients with central serous chorioretinopathy (CSC) using en-face optical coherence tomography (OCT). Procedures: We retrospectively studied 25 consecutive untreated CSC patients, using swept-source OCT and ICGA. En-face swept-source OCT images were automatically segmented and flattened with Bruch's membrane (BrM). We compared the sizes of hyperreflective areas in the 25 CSC and 25 contralateral eyes on ...
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      Mentions: Nagoya University

    16. Wide-field optical coherence tomography angiography using extended field imaging technique to evaluate the nonperfusion area in retinal vein occlusion

      Explore Medical Journals Publisher Ophthalmology
      Wide-field optical coherence tomography angiography using extended field imaging technique to evaluate the nonperfusion area in retinal vein occlusion
      Purpose: Optical coherence tomography angiography (OCTA) is a newly developed technology which allows us to reconstruct the three-dimensional chorioretinal vasculature without dye injection. OCTA is a noninvasive, rapid, and reproducible method to assess retinal ischemia. However, one of its limitations is the size of scanning area. A novel yet simple technique to expand the scan length on optical coherence tomography has been reported as an extended field imaging (EFI) technique ...
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      Mentions: 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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    3. In vivo Ultrahigh-Resolution Ophthalmic Optical Coherence Tomography Using Gaussian-Shaped Supercontinuum
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