Articles that mention Sunnybrook Health Sciences Centre -Optical Coherence Tomography News

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1. Mentioned In 67 Articles
2. Optical Coherence Tomography as an Adjunct During Carotid Artery Stenting for Carotid Atherosclerotic Disease
  
  Explore Home - Springer Jun 4 2019 Cardiology
  
  Purpose Carotid artery stenting (CAS) has been proven to decrease the risk of stroke in symptomatic patients with moderate/high-grade carotid stenosis; however, there is an increased periprocedural risk of stroke with CAS compared to carotid endarterectomy. The goal of this article is to report the utilization of endovascular optical coherence tomography (OCT) during CAS to aid in the identification of stent malapposition, plaque prolapse, and adjacent residual thrombus that ...
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  Mentions: University of Toronto Sunnybrook Health Sciences Centre
3. 2D MEMS-based high-speed beam-shifting technique for speckle noise reduction and flow rate measurement in optical coherence tomography
  
  Explore OSA | OSA Publishing Apr 23 2019
  
  In this manuscript, a two-dimensional (2D) micro-electro-mechanical system (MEMS)-based, high-speed beam-shifting spectral domain optical coherence tomography (MHB-SDOCT) is proposed for speckle noise reduction and absolute flow rate measurement. By combining a zigzag scanning protocol, the frame rates of 45.2 Hz for speckle reduction and 25.6 Hz for flow rate measurement are achieved for in-vivo tissue imaging. Phantom experimental results have shown that by setting the incident beam ...
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  Mentions: University of Toronto Sunnybrook Health Sciences Centre Ryerson University
4. Conavi Medical Announces Health Canada Approval of Novasight Hybrid System for Visualization During Coronary Angioplasty Procedures
  
  Explore Optical Coherence Tomography News Mar 14 2019 Cardiology , Other Business News
  
  Conavi Medical Inc. is pleased to announce that it has received a Health Canada Medical Device License for the Novasight Hybrid System. This patented technology is the only clinical system that enables simultaneous imaging of coronary arteries with both intravascular ultrasound (IVUS) and optical coherence tomography (OCT), and was invented at Sunnybrook Research Institute. Angioplasty and stenting is performed four million times around the world every year as an important ...
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  Mentions: Sunnybrook Health Sciences Centre Conavi Medical Inc.
5. Beam-shifting technique for speckle reduction and flow rate measurement in optical coherence tomography
  
  Explore OSA | OSA Publishing Dec 15 2018
  
  In this Letter, we propose a beam-shifting optical coherence tomography scheme for speckle reduction and blood flow rate calculation, where variations of the speckle pattern and Doppler angle were generated by parallel shifting of the sample beam incident on the objective lens. The resultant optical coherent tomography images could then be averaged for speckle noise reduction and simultaneously analyzed for flow rate measurement. The performance of the proposed technique was ...
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  Mentions: University of Toronto Sunnybrook Health Sciences Centre Ryerson University
6. Buffer-averaging super-continuum source based spectral domain optical coherence tomography for high speed imaging
  
  Explore OSA | OSA Publishing Nov 29 2018 Ophthalmology
  
  In super-continuum (SC) source based spectral domain optical coherence tomography (SC-SDOCT), the stability of the power spectral density (PSD) has a significant impact on OCT system sensitivity and image signal to noise ratio (SNR). High speed imaging decreases the camera's exposure time, thus each A-scan contained fewer laser pulse excited SC wideband emissions, resulting in a decrease of SNR. In this manuscript, we present a buffer-averaging SC-SDOCT (BASC-SDOCT) to ...
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  Mentions: University of Toronto Sunnybrook Health Sciences Centre Ryerson University
7. Conavi Medical Announces Clinical Use of the Novasight Hybrid System with Simultaneous Intravascular Ultrasound (IVUS) and Optical Coherence Tomography (OCT) Capabilities
  
  Explore Optical Coherence Tomography News Aug 14 2018 Cardiology , Other Business News
  
  Conavi TM Medical Inc. (www.conavi.com) is pleased to announce the first clinical use of the Novasight TM Hybrid System, which enables simultaneous imaging of coronary arteries with both intravascular ultrasound (IVUS) and Optical Coherence Tomography (OCT). IVUS or OCT are typically used by interventional cardiologists to image coronary anatomy during minimally invasive procedures, such as angiograms, angioplasty and stenting procedures. Drs. Tej Sheth and Natalia Pinilla Echeverri are ...
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  Mentions: Sunnybrook Health Sciences Centre Conavi Medical Inc.
8. Ultrasound and Infrared-Based Imaging Modalities for Diagnosis and Management of Cutaneous Diseases
  
  Explore Frontiers Apr 16 2018 Dermatology
  
  Non-invasive bedside imaging tools are becoming more prevalent for assessing cutaneous lesions. Ultrasound used at specific frequencies allows us to assess margins of lesions to minimize the extent of the biopsy that is performed and improve cosmetic outcomes. Vascularity, seen on Doppler ultrasound and contrast-enhanced ultrasound, and stiffness, assessed on tissue elastography, can help differentiate between benign and malignant lesions for clinicians to be more judicious in deciding whether to ...
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  Mentions: University of Toronto Sunnybrook Health Sciences Centre
9. High speed, wide velocity dynamic range Doppler optical coherence tomography (Part V): Optimal utilization of multi-beam scanning for Doppler and speckle variance microvascular imaging
  
  Explore OSA | OSA Publishing Apr 1 2017
  
  In this paper, a multi-beam scanning technique is proposed to optimize the microvascular images of human skin obtained with Doppler effect based methods and speckle variance processing. Flow phantom experiments were performed to investigate the suitability for combining multi-beam data to achieve enhanced microvascular imaging. To our surprise, the highly variable spot sizes (ranging from 13 to 77 m) encountered in high numerical aperture multi-beam OCT system imaging the same ...
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  Mentions: University of Toronto Sunnybrook Health Sciences Centre Ryerson University
10. Intraoperative optical coherence tomography of the cerebral cortex using a 7 degree-of freedom robotic arm
  
  Explore Conference Proceedings Mar 1 2017
  
  Optical Coherence Tomography (OCT) provides a high-resolution imaging technique with limited depth penetration. The current use of OCT is limited to relatively small areas of tissue for anatomical structure diagnosis or minimally invasive guided surgery. In this study, we propose to image a large area of the surface of the cerebral cortex. This experiment aims to evaluate the potential difficulties encountered when applying OCT imaging to large and irregular surface ...
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  Mentions: Sunnybrook Health Sciences Centre Ryerson University
11. Hybrid intravascular imaging: recent advances, technical considerations, and current applications in the study of plaque pathophysiology
  
  Explore Oxford Journals Apr 28 2016 Cardiology
  
  Cumulative evidence from histology-based studies demonstrate that the currently available intravascular imaging techniques have fundamental limitations that do not allow complete and detailed evaluation of plaque morphology and pathobiology, limiting the ability to accurately identify high-risk plaques. To overcome these drawbacks, new efforts are developing for data fusion methodologies and the design of hybrid, dual-probe catheters to enable accurate assessment of plaque characteristics, and reliable identification of high-risk lesions. Today ...
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  Mentions: University of Toronto Imperial College London University College London
12. Optical coherence tomography spectral analysis for detecting apoptosis in vitro and in vivo
  
  Explore SPIE | Journal Dec 8 2015
  
  Apoptosis is a form of programmed cell death characterized by a series of predictable morphological changes at the subcellular level, which modify the light-scattering properties of cells. We present a spectroscopic optical coherence tomography (OCT) technique to detect changes in subcellular morphology related to apoptosis in vitro and in vivo . OCT data were acquired from acute myeloid leukemia (AML) cells treated with cisplatin over a 48-h period. The backscatter spectrum ...
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  Mentions: University of Toronto Sunnybrook Health Sciences Centre Ryerson University
13. OCT-guided management in a patient with anterior STEMI
  
  Explore casereports.bmj.com Sep 7 2015 Cardiology
  
  A 64-year-old man presented with an anterior ST elevation myocardial infarction. He had experienced sudden onset chest pain at the end of a hockey game. His medical history was unremarkable. His blood pressure was 150/65 mm Hg and he had a heart rate of 70 bpm. Cardiovascular examination revealed normal heart sounds and no murmurs or added sounds. Coronary angiography revealed haziness in the proximal left anterior descending artery ...
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  Mentions: University of Toronto Sunnybrook Health Sciences Centre
14. Medical device with means to improve transmission of torque along a rotational drive shaft
  
  Explore uspto.gov May 26 2015 Patents , Probes
  
  The present invention provides minimally invasive imaging probe/medical device having a frictional element integrated therewith for reducing non-uniform rotational distortion near the distal end of a medical device, such as an imaging probe which undergoes rotational movement during scanning of surrounding tissue in bodily lumens and cavities.
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  Mentions: Sunnybrook Health Sciences Centre
15. Measuring the optical characteristics of medulloblastoma with optical coherence tomography
  
  Explore opticsinfobase.org Mar 25 2015 Neurology
  
  ...nnybrook Research Institute, 2075 Bayview Avenue, Toronto, ON, M4N 3M5, Canada ^10Division of Neurosurgery, Sunnybrook Health Sciences Centre, 2075 Bayview Avenue Toronto, ON, M4N 3M5, Canada ^11These authors contrib...
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  Mentions: University of Toronto Sunnybrook Health Sciences Centre Ryerson University
16. Feature Of The Week 01/18/15: An Integrated Optical Coherence Tomography-Gas Nozzle System for Surgical Laser Ablation Applications
  
  Explore Optical Coherence Tomography News Jan 18 2015
  Comment "Dear Ms. Kumar. Thank you for your comment. Please note all three articles you mentioned above are already on OCT ..." - Eric Swanson
  
  Gas assisted laser machining of materials is a common practice in the manufacturing industry. Advantages in using gas assistance include reducing the likelihood of flare-ups in flammable materials and clearing away ablated material in the cutting path. Current surgical procedures and research do not take advantage of this and in the case for resecting osseous tissue, gas assisted ablation can help minimize charring and clear away debris from the surgical ...
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  Mentions: University of Toronto Sunnybrook Health Sciences Centre Ryerson University
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