Articles that mention Antonios Karanasos -Optical Coherence Tomography News

Antonios Karanasos

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1. Mentioned In 48 Articles
2. Intravascular Polarimetry in Patients With Coronary Artery Disease
  
  Explore ScienceDirect Nov 22 2019 Cardiology
  
  Objectives The aims of this first-in-human pilot study of intravascular polarimetry were to investigate polarization properties of coronary plaques in patients and to examine the relationship of these features with established structural characteristics available to conventional optical frequency domain imaging (OFDI) and with clinical presentation. Background Polarization-sensitive OFDI measures birefringence and depolarization of tissue together with conventional cross-sectional optical frequency domain images of subsurface microstructure. Methods Thirty patients undergoing polarization-sensitive ...
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  Mentions: Brett E. Bouma Massachusetts Institute of Technology Leiden University
3. Optical Coherence Tomography For the Detection of the Vulnerable Plaque
  
  Explore radcliffecardiology.com Mar 29 2017 Cardiology
  
  Morphological characteristics of the atheromatous plaque have been associated with the development of plaque rupture and the pathogenesis of acute coronary syndromes (ACS). Plaques with a specific morphological phenotype that are at high risk of causing ACS are called vulnerable plaques, and can be identified in vivo through the use of intracoronary imaging. Optical coherence tomography (OCT) is a high-resolution intravascular imaging modality that enables detailed visualization of atheromatous plaques ...
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  Mentions: Konstantinos Toutouzas Antonios Karanasos
4. Intracoronary optical coherence tomography: Clinical and research applications and intravascular imaging software overview
  
  Explore Wiley Online Library Jan 21 2017 Cardiology
  
  By providing valuable information about the coronary artery wall and lumen, intravascular imaging may aid in optimizing interventional procedure results and thereby could improve clinical outcomes following percutaneous coronary intervention (PCI). Intravascular optical coherence tomography (OCT) is a light-based technology with a tissue penetration of approximately 1 to 3 mm and provides near histological resolution. It has emerged as a technological breakthrough in intravascular imaging with multiple clinical and research ...
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  Mentions: Imperial College London Leiden University University College London
5. Optical Coherence Tomography For the Detection of the Vulnerable Plaque
  
  Explore radcliffecardiology.com Jan 8 2017 Cardiology
  
  Morphological characteristics of the atheromatous plaque have been associated with the development of plaque rupture and the pathogenesis of acute coronary syndromes (ACS). Plaques with a specific morphological phenotype that are at high risk of causing ACS are called vulnerable plaques, and can be identified in vivo through the use of intracoronary imaging. Optical coherence tomography (OCT) is a high-resolution intravascular imaging modality that enables detailed visualization of atheromatous plaques ...
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  Mentions: Konstantinos Toutouzas Antonios Karanasos
6. EuroIntervention Automated characterisation of lipid core plaques in vivo by quantitative optical coherence tomography tissue type imaging
  
  Explore eurointervention.org Dec 23 2016 Cardiology
  
  Aims: Qualitative criteria for plaque tissue characterisation by OCT are well established, but quantitative methods lack systematic validation in vivo . High optical attenuation coefficient t has been associated with unstable plaque features, such as lipid core. The purpose of this study was to validate optical coherence tomography (OCT) attenuation imaging for tissue characterisation in vivo , specifically to detect lipid core in coronary atherosclerotic plaques, and to evaluate quantitatively the ability ...
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  Mentions: Massachusetts General Hospital Harvard University Evelyn Regar
7. Comparison of acute expansion of bioresorbable vascular scaffolds versus metallic drug-eluting stents in different degrees of calcification
  
  Explore Wiley Online Library Oct 7 2016 Cardiology
  
  Objectives The acute expansion of bioresorbable vascular scaffolds (BRS) and drug-eluting stents (DES) in lesions with different extent of calcification was compared by Optical Coherence Tomography (OCT). Background The acute mechanical performance of polymeric BRS in calcified lesions is poorly understood. Methods Acute device performance in lesions treated with either BRS( N =50) or DES ( N =50) was compared using Optical Coherence Tomography (OCT). According to angiographic degree of calcification ...
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  Mentions: Evelyn Regar Antonios Karanasos Erasmus University
8. The OPTIS Integrated System: real-time, co-registration of angiography and optical coherence tomography
  
  Explore eurointervention.org Sep 19 2016 Cardiology
  
  The efficacy of an IVUS-guided stent implantation strategy to improve acute results and clinical outcome has been described previously. OCT is another technique which allows high-resolution intracoronary imaging. However, the use of invasive imaging modalities to guide PCI has, as yet, played a limited role in current clinical practice. This may be partly explained by the expertise required for interpretation and clinical decision making. We present a novel technology which ...
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  Mentions: Evelyn Regar Giulio Guagliumi Antonios Karanasos
9. Fusion of fibrous cap thickness and wall shear stress to assess plaque vulnerability in coronary arteries: a pilot study
  
  Explore Home - Springer May 30 2016 Cardiology
  
  Purpose Identification of rupture-prone plaques in coronary arteries is a major clinical challenge. Fibrous cap thickness and wall shear stress are two relevant image-based risk factors, but these two parameters are generally computed and analyzed separately. Accordingly, combining these two parameters can potentially improve the identification of at-risk regions. Therefore, the purpose of this study is to investigate the feasibility of the fusion of wall shear stress and fibrous cap ...
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  Mentions: Evelyn Regar Antonios Karanasos Erasmus University
10. Optical Coherence Tomography in Grafts (Book Chapter)
  
  Explore Home - Springer Mar 29 2016 Cardiology , Textbooks
  
  Coronary artery bypass graft (CABG) is a commonly used surgery to treat patients with complex artery disease. Long-term outcome of specifically saphenous vein grafts (SVG) is considered unfavorable, while it is the most commonly used conduit. The SVG is prone to occlude and half of the patients will develop vein graft failure (VGF) within 10 years. VGF is the result of the accelerated atherosclerosis that differs from what is seen ...
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  Mentions: Evelyn Regar Antonios Karanasos Erasmus University
11. Safety of optical coherence tomography in daily practice: a comparison with intravascular ultrasound
  
  Explore European Heart Journal Mar 20 2016 Cardiology
  
  Aims Previous studies have reported the safety and feasibility of both time-domain optical coherence tomography (TD-OCT) and Fourier-domain OCT (FD-OCT) in highly selected patients and clinical settings. However, the generalizability of these data is limited, and data in unselected patient populations reflecting a routine cathlab practice are lacking. We compared safety of intracoronary FD-OCT imaging to intravascular ultrasound (IVUS) imaging in a large real-world series of consecutive patients who underwent ...
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  Mentions: Evelyn Regar Gijs van Soest Jurgen M. Ligthart
12. Incidence and potential mechanism of resolved, persistent and newly acquired malapposition three days after implantation of self-expanding or balloon-expandable stents in a STEMI population: insights from optical coherence tomography in the APPOSITION II
  
  Explore eurointervention.org Nov 10 2015 Cardiology
  
  Aims: The aim of the current study was to investigate the frequency and mechanisms of sequential incomplete stent apposition (ISA) changes such as persistent, resolved or newly acquired ISA during the first three days after primary PCI (pPCI) in a matched segment-level analysis, with the comparison between self-expanding and balloon-expandable stents assessed by optical coherence tomography (OCT). Methods and results: The current analysis is a substudy of the APPOSITION II ...
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  Mentions: Imperial College London Corrado Tamburino University of Catania
13. Vulnerable plaque imaging: updates on new pathobiological mechanisms
  
  Explore Oxford Journals Sep 30 2015 Cardiology
  
  Early identification of vulnerable, rupture-prone atherosclerotic plaques with the optimal goal of cardiovascular event prevention is a field of vigorous research. Despite the advances in imaging modalities and the in vivo identification of many characteristics of vulnerability, few of these plaques actually rupture and even fewer lead to clinical events, questioning the predictive value of the above techniques in clinical practice. Factors causing the higher local vulnerability of the culprit ...
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  Mentions: Konstantinos Toutouzas Antonios Karanasos
14. An Unusual Complication After Bioresorbable Scaffold Implantation Visualization of Intramural Hematoma by Optical Coherence Tomography
  
  Explore interventions.onlinejacc.org Aug 23 2015 Cardiology
  
  A 68-year-old man was treated in our catheterization laboratory for ST-segment elevation myocardial infarction. He had undergone 3.5 18-mm bioresorbable vascular scaffold (BVS) implantation in the proximal left anterior descending coronary artery for stable angina in another institution 2 days before. At presentation, angiography showed a filling defect located 5 mm distally to the scaffolded segment ( Figure 1A ). An attempt at thrombus aspiration was performed, without retrieving any aspiration ...
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  Mentions: Evelyn Regar Jurgen M. Ligthart Antonios Karanasos
15. OCT demonstrating neoatherosclerosis as part of the continuous process of coronary artery disease
  
  Explore Home - Springer Aug 12 2015 Cardiology
  
  Although the advent of drug-eluting stents has reduced the rates of target vessel revascularization, there are observations of ongoing stent failure occurring very late after stent implantation and presenting as very late restenosis or as very late stent thrombosis. The de novo development of atherosclerosis within the neointimal region, called neoatherosclerosis, has been identified as one of the pathomechanisms of these observed late stent failures. The mechanisms of neoatherosclerosis development ...
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  Mentions: Evelyn Regar Antonios Karanasos Erasmus University
16. Utility of Optical Coherence Tomography Imaging with Angiographic Co-registration for the Guidance of Percutaneous Coronary Intervention
  
  Explore radcliffecardiology.com Jul 18 2015 Cardiology
  
  Intracoronary optical coherence tomography (OCT) is a light-based imaging modality able to visualise with high resolution (~10 m) the vascular morphology and the acute and chronic effects of intervention with intracoronary devices. 1,2 OCT could therefore find application in the guidance of percutaneous coronary intervention (PCI), allowing a thorough preprocedural lesion assessment, which enables accurate device sizing, selection of the vessel segment requiring treatment, and, thus, efficient planning of ...
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  Mentions: Terumo Corporation Boston Scientific Abbot
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