Articles that mention Shanghai Jiao Tong University -Optical Coherence Tomography News

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1. Mentioned In 126 Articles
2. Noise reduction by adaptive-SIN filtering for retinal OCT images
  
  Explore Nature Publishing Group Oct 2 2021
  
  Optical coherence tomography (OCT) images is widely used in ophthalmic examination, but their qualities are often affected by noises. Shearlet transform has shown its effectiveness in removing image noises because of its edge-preserving property and directional sensitivity. In the paper, we propose an adaptive denoising algorithm for OCT images. The OCT noise is closer to the Poisson distribution than the Gaussian distribution, and shearlet transform assumes additive white Gaussian noise ...
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  Mentions: Shanghai Jiao Tong University
3. Automatic Coregistration Between Coronary Angiography and Intravascular Optical Coherence Tomography
  
  Explore ScienceDirect Sep 26 2021 Cardiology
  
  This study sought to evaluate a novel approach for automatic coregistration of optical coherence tomography (OCT) and coronary angiography. Lumen diameters and side branches from both coronary angiography and OCT were used to create 2 feature sets. Subsequently, a 2-step coregistration approach was performed on the feature sets for matching of each OCT cross section on the angiographic centerline. For validation, all side branches with 1.0 mm diameter were ...
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  Mentions: Wakayama Medical University Shanghai Jiao Tong University
4. Optical Flow Ratio for Assessing Stenting Result and Physiological Significance of Residual Disease
  
  Explore eurointervention.pcronline.com Jun 10 2021 Cardiology
  
  Background: Optical flow ratio (OFR) is a novel method for fast computation of fractional flow reserve (FFR) from optical coherence tomography (OCT) images. Aims: We aimed to evaluate the accuracy of OFR in predicting post-percutaneous coronary intervention (PCI) FFR and to evaluate the impact of stent expansion on within-stent OFR pressure drop (In-stent OFR). Methods: Post-PCI OFR was computed in patients with both OCT and FFR interrogation immediately after PCI ...
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  Mentions: Oxford University Shanghai Jiao Tong University National University of Ireland, Galway
5. Determinants of peripapillary retinal nerve fiber layer’s grayscale value in normal eyes by spectral domain optical coherence tomography
  
  Explore Nature Publishing Group May 7 2021 Ophthalmology
  
  To determine and evaluate the distribution, variation, and determinants of peripapillary retinal nerve fiber layer (pRNFL) grayscale value with spectral-domain optical coherence tomography (SD-OCT) in normal eyes. In this cross-sectional study, three hundred ninety-seven normal eyes from 397 healthy Chinese adults aged 18-80 were consecutively recruited from a tertiary eye care center. An SD-OCT instrument took pRNFL imaging. We used a customized software to measure pRNFL parameters, including thickness and ...
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  Mentions: The Chinese University of Hong Kong Shanghai Jiao Tong University
6. Comparison of two spectral-domain optical coherence tomography scan modes for measuring retinal vessel diameter
  
  Explore Taylor & Francis Online Apr 24 2021 Ophthalmology
  
  Purpose : To assess the agreement between Line 3-5 raster scan mode and circular scan mode for measuring retinal vessel diameter, and to analyze the influence of scanning distance on retinal vessel diameter and agreement. Methods : 79 healthy participants (79 eyes) were scanned with two modes. The scanning distance was defined as the distance from the center of the optic disc to the intersection of the blood vessel and the scan ...
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  Mentions: Thomas Jefferson University Shanghai Jiao Tong University
7. Small dome-shaped pigment epithelium detachment in polypoidal choroidal vasculopathy: an under-recognized sign of polypoidal lesions on optical coherence tomography?
  
  Explore Nature Publishing Group Apr 8 2021 Ophthalmology
  
  Purpose To evaluate the diagnostic accuracy of spectral-domain optical coherence tomography (SD-OCT) and swept-source optical coherence tomographic angiography (SS-OCTA) to identify polypoidal lesions in serous or serosanguinous maculopathy. Materials and methods A retrospective review of patients presenting pigment epithelial detachments (PEDs) with the diagnosis of polypoidal choroidal vasculopathy (PCV), neovascular age-related macular degeneration (nAMD), and central serous chorioretinopathy (CSC), all of which underwent SD-OCT, SS-OCTA, and indocyanine green angiography (ICGA ...
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  Mentions: Shanghai Jiao Tong University
8. Multi-scale GCN-assisted two-stage network for joint segmentation of retinal layers and discs in peripapillary OCT images
  
  Explore OSA | OSA Publishing Apr 7 2021 Ophthalmology
  
  An accurate and automated tissue segmentation algorithm for retinal optical coherence tomography (OCT) images is crucial for the diagnosis of glaucoma. However, due to the presence of the optic disc, the anatomical structure of the peripapillary region of the retina is complicated and is challenging for segmentation. To address this issue, we develop a novel graph convolutional network (GCN)-assisted two-stage framework to simultaneously label the nine retinal layers and ...
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  Mentions: Shanghai Jiao Tong University
9. Non-invasive optical methods for melanoma diagnosis
  
  Explore ScienceDirect Mar 31 2021 Dermatology
  
  Cutaneous melanoma is one of the most common malignancies with increased incidence in the past few decades, making it a significant public health problem. The early diagnosis of melanoma is a major factor in improving patients survival. The traditional pathway to melanoma diagnosis starts with a visual diagnosis, followed by subsequent biopsy and histopathologic evaluation. Recently, multiple innovative optical technology-based methods, including dermoscopy, reflectance confocal microscopy, optical coherence tomography, multiphoton ...
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  Mentions: Shanghai Jiao Tong University
10. Inpainting for Saturation Artifacts in Optical Coherence Tomography using Dictionary-based Sparse Representation
  
  Explore IEEE Xplore Feb 18 2021 NDE/NDT
  
  Saturation artifacts in optical coherence tomography (OCT) occur when received signal exceeds the dynamic range of spectrometer. Saturation artifact shows a streaking pattern and could impact the quality of OCT images, leading to inaccurate medical diagnosis. In this paper, we automatically localize saturation artifacts and propose an artifact correction method via inpainting. We adopt a dictionary-based sparse representation scheme for inpainting. Experimental results demonstrate that, in both case of synthetic ...
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  Mentions: University of Alabama Shanghai Jiao Tong University
11. Automatic Characterisation of Human Atherosclerotic Plaque Composition from Intravascular Optical Coherence Tomography Using Artificial Intelligence
  
  Explore eurointervention.pcronline.com Feb 2 2021 Cardiology
  
  Background Intravascular optical coherence tomography (IVOCT) enables detailed plaque characterisation in-vivo, but visual assessment is time-consuming and subjective. Aims This study aims to develop and validate an automatic framework for IVOCT plaque characterisation using artificial intelligence (AI). Methods IVOCT pullbacks from 5 international centres were analysed in a corelab, annotating basic plaque components, inflammatory markers and other structures. A deep convolutional network with encoding-decoding architecture and pseudo-3D input was developed ...
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  Mentions: Cardiovascular Research Foundation Wakayama Medical University Chinese Academy of Sciences
12. Detection and analysis of early degradation at resin-dentin interface by optical coherence tomography (OCT) and confocal laser scanning microscope (CLSM)
  
  Explore ScienceDirect Jan 17 2021 Dentistry
  
  Objective To evaluate early degradation at resin-dentin interface using non-invasive swept-source optical coherence tomography (SS-OCT) and confocal laser scanning microscope (CLSM). Methods Self-etch adhesives and resin-composites containing bisphenol-glycidyl-dimethacrylate (Bis-GMA), which is one of the most widely used monomers in restorative materials, were investigated in this study. Forty cervical cavities were prepared in bovine incisors and applied by the adhesive with/without Bis-GMA (AdhesiveBG/Adhesive), filled by the resin with/without ...
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  Mentions: University of Washington Tokyo Medical & Dental University Shanghai Jiao Tong University
13. Morphologic Features of Myopic Choroidal Neovascularization in Pathologic Myopia on Swept-Source Optical Coherence Tomography
  
  Explore Frontiers Jan 13 2021 Ophthalmology
  
  Purpose: To investigate the morphologic features and identify the risk factors of myopic choroidal neovascularization (CNV). Methods: Eighty-eight eyes of 69 consecutive patients with myopic CNV were included in this study. About 109 eyes of 78 pathologic myopia patients without myopic CNV were randomly selected as the control group. Morphologic features and parameters including scleral thickness (ST), choroidal thickness (CT), posterior staphyloma height and the presence of scleral perforating vessels ...
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  Mentions: Shanghai Jiao Tong University
14. Choroidal alterations of Sturge-Weber syndrome secondary glaucoma and non-glaucoma port-wine stain patients distinguished by enhanced depth imaging optical coherence tomography
  
  Explore BMC Ophthalmology Dec 9 2020 Ophthalmology
  
  Background: To evaluate the choroidal changes in Sturge-Weber syndrome (SWS) secondary glaucoma and non-glaucoma port-wine stain (PWS) patients by enhanced depth imaging optical coherence tomography (EDI-OCT). Methods: SWS and PWS patients who were over 3 years old and treated or screened at our ophthalmology department were included in the study. Baseline demographics, EDI-OCT and fundus photography data were collected from all patients. Results: Overall, 46 non-glaucoma PWS (NGPWS) patients and ...
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  Mentions: Shanghai Jiao Tong University
15. Updates on ophthalmic imaging features of optic disc drusen, papilledema, and optic disc edema
  
  Explore LWW Online Dec 6 2020 Ophthalmology
  
  Purpose of review Optic nerve head elevation can be associated with vision loss. This review provides an update regarding key features of optic disc drusen (ODD) compared with papilledema from increased intracranial pressure and optic disc edema from other causes. Recent findings Clinical history and funduscopic examination are not sufficient to correctly diagnose different causes of optic nerve head elevation. Multimodal ophthalmic imaging is noninvasive and should be used as ...
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  Mentions: Stanford University Shanghai Jiao Tong University
16. Effect of spectral leakage on the image formation of Fourier-domain optical coherence tomography
  
  Explore OSA | OSA Publishing Nov 24 2020
  
  We report on the investigation of spectral leakages impact on the reconstruction of Fourier-domain optical coherence tomography (FD-OCT). We discuss the shift-variant nature introduced by the spectral leakage and develop a novel spatial-domain FD-OCT image formation model. A proof-of-concept phantom experiment is conducted to validate our model. Compared with previous models, the proposed framework could better describe the image formation process, especially when the fineness of the axial structure approaches ...
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  Mentions: University of Alabama Medical University of Vienna Singapore Eye Research Institute
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