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Intracoronary Optical Coherence Tomography
Intracoronary optical coherence tomography (OCT) (or, more generally, intravascular optical coherence tomography, IVOCT) is an endoscopic-based application of optical coherence tomography. Analogous to intravascular ultrasound, intracoronary OCT uses a catheter to deliver and collect near infrared light (e.g., 1,300 nm) to create cross-sectional images of the artery lumen and wall. Intracoronary OCT creates images at a resolution of approximately 15 micro-meters, an order of magnitude improved resolution with respect to intravascular ultrasound and X-ray coronary angiogram. IVOCT visualization of arteries inner lumen can help physician to understand morphology and plan treatment accordingly. IVOCT has been used as guidance for angioplasty intervention of coronary arteries, including optimization of stent implantation. Medical uses Data published in late 2016 showed that approximately 100,000 intracoronary optical coherence tomography procedures are performed every year, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atherosclerotic Plaque
An atheroma, or atheromatous plaque, is an abnormal and reversible accumulation of material in the inner layer of an arterial wall. The material consists of mostly macrophage cells, or debris, containing lipids, calcium and a variable amount of fibrous connective tissue. The accumulated material forms a swelling in the artery wall, which may intrude into the lumen of the artery, narrowing it and restricting blood flow. Atheroma is the pathological basis for the disease entity atherosclerosis, a subtype of arteriosclerosis. Signs and symptoms For most people, the first symptoms result from atheroma progression within the heart arteries, most commonly resulting in a heart attack and ensuing debility. The heart arteries are difficult to track because they are small (from about 5 mm down to microscopic), they are hidden deep within the chest and they never stop moving. Additionally, all mass-applied clinical strategies focus on both minimal cost and the overall safety of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vascular Procedures
The blood vessels are the components of the circulatory system that transport blood throughout the human body. These vessels transport blood cells, nutrients, and oxygen to the tissues of the body. They also take waste and carbon dioxide away from the tissues. Blood vessels are needed to sustain life, because all of the body's tissues rely on their functionality. There are five types of blood vessels: the arteries, which carry the blood away from the heart; the arterioles; the capillaries, where the exchange of water and chemicals between the blood and the tissues occurs; the venules; and the veins, which carry blood from the capillaries back towards the heart. The word ''vascular'', meaning relating to the blood vessels, is derived from the Latin ''vas'', meaning vessel. Some structures – such as cartilage, the epithelium, and the lens and cornea of the eye – do not contain blood vessels and are labeled ''avascular''. Etymology * artery: late Middle English; from Lati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Intravascular Fluorescence
Intravascular fluorescence is a catheter-based molecular imaging technique that uses near-infrared fluorescence to detect artery wall autofluorescence (NIRAF) or fluorescence generated by molecular agents injected intravenously (NIRF) . No commercial systems based on intravascular fluorescence are currently on the market, however, significant steps forwards in intravascular fluorescence imaging technology have been made between 2010-2016. It is typically used to detect functional state of artery wall including some known high-risk features of atherosclerosis (e.g., inflammation). It is usually combined with structural imaging modalities such as Intravascular ultrasound and/or Intracoronary optical coherence tomography, to provide functional information in a morphological context. Methods Intravascular fluorescence typically used laser-induced fluorescence to stimulate fluorescence emission of particular vessel wall and plaque components or previously injected molecular agents (i.e. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Intravascular Ultrasound
Intravascular ultrasound (IVUS) or intravascular echocardiography is a medical imaging methodology using a specially designed catheter with a miniaturized ultrasound probe attached to the distal end of the catheter. The proximal end of the catheter is attached to computerized ultrasound equipment. It allows the application of ultrasound technology, such as piezoelectric transducer or CMUT, to see from inside blood vessels out through the surrounding blood column, visualizing the endothelium (inner wall) of blood vessels. The arteries of the heart (the coronary arteries) are the most frequent imaging target for IVUS. IVUS is used in the coronary arteries to determine the amount of atheromatous plaque built up at any particular point in the epicardial coronary artery. Intravascular ultrasound provides a unique method to study the regression or progression of atherosclerotic lesions in vivo. The progressive accumulation of plaque within the artery wall over decades is the setup f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fractional Flow Reserve
Fractional flow reserve (FFR) is a diagnostic technique used in coronary catheterization. FFR measures pressure differences across a coronary artery stenosis (narrowing, usually due to atherosclerosis) to determine the likelihood that the stenosis impedes oxygen delivery to the heart muscle (myocardial ischemia). Fractional flow reserve is defined as the pressure after (distal to) a stenosis relative to the pressure before the stenosis. The result is an absolute number; an FFR of 0.80 means that a given stenosis causes a 20% drop in blood pressure. In other words, FFR expresses the maximal flow down a vessel in the presence of a stenosis compared to the maximal flow in the hypothetical absence of the stenosis. Procedure During coronary catheterization, a catheter is inserted into the femoral (groin) or radial arteries (wrist) using a sheath and guidewire. FFR uses a small sensor on the tip of the wire (commonly a transducer) to measure pressure, temperature and flow to determine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Optics Express
''Optics Express'' is a biweekly peer-reviewed scientific journal published by Optica. It was established in 1997. The journal reports on scientific and technology innovations in all aspects of optics and photonics. The Energy Express supplement reports research on the science and engineering of light and its impact on sustainable energy development, the environment, and green technologies. The editor-in-chief is James Leger (University of Minnesota). According to the ''Journal Citation Reports'', the journal has a 2021 impact factor The impact factor (IF) or journal impact factor (JIF) of an academic journal is a scientometric index calculated by Clarivate that reflects the yearly mean number of citations of articles published in the last two years in a given journal, as i ... of 3.833, ranking it 28th out of 101 journals in the category "Optics". References External links * Open access journals Optics journals Optica (society) academic journals Publications estab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
European Heart Journal - Cardiovascular Imaging
The ''European Heart Journal: Cardiovascular Imaging'' is a peer-reviewed medical journal published by Oxford University Press, on behalf of the European Society of Cardiology. The first issue was published in March 2000 with the former name of ''European Journal of Echocardiography''. The journal adopted the current name ''European Heart Journal: Cardiovascular Imaging'' in 2012, and is part of the ''European Heart Journal'' series of journals. Published articles present original research on different aspects of cardiovascular imaging in the field of cardiac and coronary CT, MRI, echocardiography, x-ray angiography, ultrasounds and optical imaging. With an impact factor of 6.875 in 2020, it ranked at a high position number among journals in the field of Radiology, Nuclear Medicine & Medical Imaging and it established itself as one of the top cardiovascular journals worldwide. Abstracting and indexing The journal is abstracted and indexed in MEDLINE, Science Citation Index, and S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Evelyn Regar
Evelyn may refer to: Places * Evelyn, London *Evelyn Gardens, a garden square in London * Evelyn, Ontario, Canada * Evelyn, Michigan, United States * Evelyn, Texas, United States * Evelyn, Wirt County, West Virginia, United States * Evelyn (VTA), former light rail train station in Mountain View, California, United States * Evelyn County, New South Wales, Australia * Electoral district of Evelyn, an electoral district in Victoria, Australia * Evelyn, Queensland, Australia * 503 Evelyn, a main belt asteroid Schools * Evelyn College for Women, or Evelyn College, the former women's college of Princeton University * Evelyn High School, in Bulawayo, Zimbabwe Entertainment * ''Evelyn'' (2002 film), a film starring Sophie Vavasseur and Pierce Brosnan * ''Evelyn'' (2018 film), a documentary * '' Evelyn: The Cutest Evil Dead Girl'', 2002 short film and black comedy directed by Brad Peyton * ''Evelyn'' (play), a 1969 radio play by Rhys Adrian * ''Evelyn'' (EP), an EP by The Me ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ron T
Ron is a shortening of the name Ronald. Ron or RON may also refer to: Arts and media * Big Ron (''EastEnders''), a TV character * Ron (''King of Fighters''), a video game character *Ron Douglas, the protagonist in ''Lucky Stiff'' played by Joe Alasky *Ron Weasley, a character in ''Harry Potter.'' Language * Ron language, spoken in Plat State, Nigeria * Romanian language (ISO 639-3 code ron) People Mononym *Ron (singer), Rosalino Cellamare (born 1953), Italian singer Given name *Ron (given name) Surname *Dana Ron (born 1964), Israeli computer scientist and professor *Elaine Ron (1943-2010), American epidemiologist *Emri Ron (born 1936), Israeli politician *Ivo Ron (born 1967), Ecuadorian football player *Jason De Ron (born 1973), Australian musician *José Ron (born 1981), Mexican actor *Liat Ron, actress, dancer and dance instructor * *Lior Ron (born 1982), Israeli-American film and trailer composer and musician *Michael Ron (born 1932), Israeli fencer * Michael Røn (born ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Felix Zijlstra
Felix may refer to: * Felix (name), people and fictional characters with the name Places * Arabia Felix is the ancient Latin name of Yemen * Felix, Spain, a municipality of the province Almería, in the autonomous community of Andalusia, Spain * St. Felix, Prince Edward Island, a rural community in Prince County, Prince Edward Island, Canada. * Felix, Ontario, an unincorporated place and railway point in Northeastern Ontario, Canada * St. Felix, South Tyrol, a village in South Tyrol, in northern Italy. * Felix, California, an unincorporated community in Calaveras County Music * Felix (band), a British band * Felix (musician), British DJ * Félix Award, a Quebec music award named after Félix Leclerc Business * Felix (pet food), a brand of cat food sold in most European countries * AB Felix, a Swedish food company * Felix Bus Services of Derbyshire, England * Felix Airways, an airline based in Yemen Science and technology * Apache Felix, an open source OSGi framewor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gijs Van Soest
Gijs is a Dutch masculine given name, which is a variant of Gijsbert, derived from the German name Gisbert. The ''Gis'' element is derived from ''gisil'', meaning "pledge" or "hostage".''Behind the Name''"Given Name Gisbert" Retrieved on 24 January 2016. The name may refer to: * Gijs van Aardenne (1930–1995), Dutch politician * Gijs Bakker (born 1942), Dutch jewelry designer * Gijs Bosch Reitz (1860-1938), Dutch painter *Gijs Damen (born 1979), Dutch swimmer *Gijs van Hall (1904–1977), Dutch politician *Gijs Van Hoecke (born 1991), Belgian cyclist *Gijs van Heumen (born 1952), Dutch field hockey player * Gijs IJlander (born 1947), Dutch writer * Gijs Kuenen (born 1940), Dutch microbiologist * Gijs van der Leden (born 1967), Dutch water polo player *Gijs van Lennep (born 1942), Dutch esquire *Gijs Luirink (born 1983), Dutch footballer *Gijs Ronnes (born 1977), Dutch volleyball player *Gijs Scholten van Aschat (born 1959), Dutch actor *Gijs Steinmann Gijsbertus "Gijs" Steinman ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
