Articles that mention University of Melbourne -Optical Coherence Tomography News

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2. Anterior segment optical coherence tomography angiography
  
  Explore Taylor & Francis Online Aug 15 2019 Ophthalmology
  
  We present a novel method to image the vasculature of the anterior segment of the eye using a non-invasive optical coherence tomography angiography (OCTA) system with a modified lens system. This system utilises the Heidelberg Spectralis OCTA and a 3D printed lens mount holding a simple biconvex lens in place to allow capture of images in the anterior segment.
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  Mentions: University of Melbourne
3. Optical coherence tomography: seeing the unseen
  
  Explore Wiley Online Library Apr 25 2019 Ophthalmology
  
  ptical coherence tomography (OCT) is an imaging technology that has revolutionised the way we detect and manage ocular disease. Quite simply, it allows the clinician to visualise ocular pathology previously not detectable or only evident in advanced disease. OCT has its roots in ultrafast laser‐activated shutters to photograph light echoes, which allowed the depth of objects to be captured. Duguay and Mattick 1 at ATT Bell Laboratories in 1971 ...
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  Mentions: Massachusetts Institute of Technology University of Melbourne
4. Clozapine-Induced Myocarditis or Acute Coronary Syndrome? Optical Coherence Tomography to the Rescue
  
  Explore Hindawi Publishing Corporation Jul 24 2018 Cardiology
  
  Chest pain and troponin elevation may be due to an acute coronary syndrome, myocarditis, acute cardiomyopathy, or other less common conditions. Management differs depending on the aetiology, and the pathophysiologic diagnosis has direct implications on treatment and patient outcomes. History and clinical examination is supplemented by selected investigations including the electrocardiogram, chest X-ray, echocardiography, coronary angiography, and even myocardial perfusion scintigraphy or cardiac magnetic resonance imaging. Intravascular imaging can provide ...
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  Mentions: Peter Barlis University of Melbourne
5. Are the Eyes Windows to Early Dementia? Thinner retinal nerve fiber layer may be associated with worse cognitive function
  
  Explore Medical News Jun 25 2018 Ophthalmology
  
  ...pouching of the brain and retinal changes can parallel cortical findings, noted Christine Nguyen, PhD, of the University of Melbourne in Australia, who was not involved in either study "These two studies show in large co...
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  Mentions: University College London University of Melbourne
6. An Automated Method for Choroidal Thickness Measurement from Enhanced Depth Imaging Optical Coherence Tomography Images
  
  Explore ScienceDirect Jan 13 2018
  
  The choroid is vascular tissue located underneath the retina and supplies oxygen to the outer retina; any damage to this tissue can be a precursor to retinal diseases. This paper presents an automated method of choroidal segmentation from enhanced depth imaging optical coherence tomography (EDI-OCT) images. The Dijkstra shortest path algorithm is used to segment the choroid-sclera interface (CSI), the outermost border of the choroid. A novel intensity-normalisation technique that ...
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  Mentions: Joel S. Schuman Hiroshi Ishikawa University of Melbourne
7. Qualitative and quantitative assessment of posterior segment optical coherence tomography images using standard photos: the Liwan Eye Study
  
  Explore BMJ Open Dec 26 2017 Ophthalmology
  
  Background/aims To develop a standardised grading scheme, using standard photos, for spectral-domain ocular coherence tomography (SD-OCT) images of the posterior eye and evaluate the interobserver agreement among trained ophthalmologists in identifying pathological changes. Methods Subjects were recruited from Liwan District, Guangzhou, with SD-OCT data collection from June 2013 to November 2013 as part of 10-year follow-up visits from the Liwan Eye Study. All subjects underwent SD-OCT imaging of the ...
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  Mentions: Harvard University Sun Yat-Sen University University of Melbourne
8. Automatic optical coherence tomography imaging analysis for retinal disease screening (Thesis)
  
  Explore Minerva Access Dec 19 2017 Ophthalmology , Student Theses
  
  The retina and the choroid are two important structures of the eye and on which the quality of eye sight depends. They have many tissue layers which are very important for monitoring the health and the progression of the eye disease from an early stage. These layers can be visualised using Optical Coherence Tomography (OCT) imaging. The abnormalities in these layers are indications of several eye diseases that can lead ...
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  Mentions: University of Melbourne
9. Unblocking arteries with maths
  
  Explore New Zealand Doctor Nov 13 2017 Cardiology
  
  ...ng another invasive procedure and insert a pressure wire, Professor Barlis said. Professor Barlis worked with University of Melbourne engineers Professor Andrew Ooi, Dr Eric Poon and Dr Vikas Thondapu to combine high res...
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  Mentions: Peter Barlis University of Melbourne
10. Coronary optical coherence tomography-derived virtual fractional flow reserve (FFR): anatomy and physiology all-in-one | European Heart Journal
  
  Explore Journals Oct 17 2017 Cardiology
  
  $Coronary optical coherence tomography-derived virtual fractional flow reserve (FFR): anatomy and physiology all-in-one | European Heart Journal$
  Most invasive coronary imaging modalities only provide anatomical information from which physiologic significance is inferred. Fractional flow reserve (FFR) and other physiologic indices of lesion severity are more reliable methods to identify physiologically significant lesions. Currently, accomplishing both anatomic and physiologic interrogation of an intermediate coronary stenosis requires the use of multiple devices within the coronary artery. Coronary angiography, optical coherence tomography (OCT), and FFR were performed in a left ...
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  Mentions: Peter Barlis University of Melbourne European Society of Cardiology
11. Advanced Imaging of Intracranial Atherosclerosis: Lessons from Interventional Cardiology
  
  Explore journal.frontiersin.org Aug 10 2017 Cardiology , Neurology
  
  ntracranial atherosclerosis is a major cause of ischemic stroke. Patients with a high degree of stenosis have a significant rate of stroke despite medical therapy. Two randomized trials of stenting have failed to show benefit. Improving peri-procedural complication rates and patient selection may improve stenting outcomes. Fractional flow reserve (FFR), intravascular ultrasound (IVUS) and optical coherence tomography (OCT) are intravascular imaging techniques employed to improve patient selection and stent placement ...
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  Mentions: Mount Sinai School of Medicine University of Melbourne
12. Repeatability and Reproducibility of Retinal Neuronal and Axonal Measures on Spectral-domain Optical Coherence Tomography in Patients with Cognitive Impairment
  
  Explore journal.frontiersin.org Aug 7 2017 Neurology , Ophthalmology
  
  Background: With increasing interest in determining if measurement of retinal neuronal structure with spectral-domain optical coherence tomography (SD-OCT) is useful in accessing neurodegenerative process in cognitive decline and development of dementia, it is important to evaluate whether the SD-OCT measurements are repeatable and reproducible in patients with Alzheimers disease (AD) or mild cognitive impairment (MCI). Methods: This is a retrospective cohort study. Patients with AD or MCI with no change ...
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  Mentions: Singapore Eye Research Institute Carl Zeiss Meditec University of Melbourne
13. Automatic segmentation of nine retinal layer boundaries in OCT images of non-exudative AMD patients using deep learning and graph search
  
  Explore OSA | OSA Publishing Jul 1 2017 Ophthalmology
  
  We present a novel framework combining convolutional neural networks (CNN) and graph search methods (termed as CNN-GS) for the automatic segmentation of nine layer boundaries on retinal optical coherence tomography (OCT) images. CNN-GS first utilizes a CNN to extract features of specific retinal layer boundaries and train a corresponding classifier to delineate a pilot estimate of the eight layers. Next, a graph search method uses the probability maps created from ...
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  Mentions: Duke University Sina Farsiu University of Melbourne
14. Automatic Identification of Pathology-Distorted Retinal Layer Boundaries Using SD-OCT Imaging
  
  Explore IEEE Xplore Jun 17 2017 Ophthalmology
  
  Objective: We propose an effective automatic method for identification of four retinal layer boundaries from the spectral domain optical coherence tomography images in the presence and absence of pathologies and morphological changes due to disease. Methods: The approach first finds an approximate location of three reference layers and then uses these to bound the search space for the actual layers, which is achieved by modeling the problem as a graph ...
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  Mentions: University of Melbourne
15. Clinical Significance of Lipid-Rich Plaque Detected by Optical Coherence Tomography : A 4-Year Follow-Up Study
  
  Explore ScienceDirect May 29 2017 Cardiology
  
  Background Lipid-rich plaque (LRP) is thought to be a precursor to cardiac events. However, its clinical significance in coronary arteries has never been systematically investigated. Objectives This study investigated the prevalence and clinical significance of LRP in the nonculprit region of the target vessel in patients undergoing percutaneous coronary intervention (PCI). Methods The study included 1,474 patients from 20 sites across 6 countries undergoing PCI, who had optical coherence ...
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  Mentions: University of Pittsburgh Massachusetts Institute of Technology James G. Fujimoto
16. Optical Coherence Tomography Reveals Changes to Corneal Reflectivity and Thickness in Individuals with Tear Hyperosmolarity
  
  Explore TVST Journal May 28 2017 Ophthalmology
  
  Purpose : To investigate whether tear hyperosmolarity, a feature of dry eye disease (DED), affects central corneal thickness (CCT), corneal light reflectivity, and/or tear film reflectivity. Methods : This prospective, cross-sectional study involved 48 participants (38 with hyperosmolar tears and 10 controls with normo-osmolar tears). Symptoms and signs of DED (tear osmolarity, sodium fluorescein tear break-up time, ocular surface staining, Schirmer test) were assessed. CCT, and the reflectivity of the cornea ...
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  Mentions: University of Melbourne
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