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Encyclopedia > Angiogram
Patient about to undergo an angiogram, image courtesy of WHO.
Patient about to undergo an angiogram, image courtesy of WHO.

Angiography or arteriography is a medical imaging technique in which an X-ray picture is taken to visualize the inner opening of blood filled structures, including arteries, veins and the heart chambers. Its name comes from the Greek words angeion, "vessel", and graphien, "to write or record". The X-ray film or image of the blood vessels is called an angiograph, or more commonly, an angiogram. Image File history File links Download high resolution version (975x696, 270 KB)Template:PD-USGov-NIH) Multimedia http://wwwihm. ... Image File history File links Download high resolution version (975x696, 270 KB)Template:PD-USGov-NIH) Multimedia http://wwwihm. ... Medical imaging designates the ensemble of techniques and processes used to create images of the human body (or parts thereof) for clinical purposes (medical procedures seeking to reveal, diagnose or examine disease) or medical science (including the study of normal anatomy and function). ... In the NATO phonetic alphabet, X-ray represents the letter X. An X-ray picture (radiograph) taken by Röntgen An X-ray is a form of electromagnetic radiation with a wavelength approximately in the range of 5 pm to 10 nanometers (corresponding to frequencies in the range 30 PHz... Section of an artery For other uses, see Artery (disambiguation). ... In the circulatory system, a vein is a blood vessel that carries blood toward the heart. ... Heart chamber is a general term used to refer to any of the four chambers of the Mammalian heart: Right atrium receives oxygen-depleted blood from the body via the superior vena cava and the inferior vena cava and pumps it through the tricuspid valve into the right ventricle. ... f you all The blood vessels are part of the circulatory system and function to transport blood throughout the body. ...


The Portuguese physician and neurologist Egas Moniz, Nobel Prize winner in 1949, developed in 1927 the technique of contrasted x-ray cerebral angiography to diagnose several kinds of nervous diseases, such as tumors and arteriovenous malformations. He is usually recognised as one of the pioneers in this field. With the introduction of the Seldinger technique in 1953, the procedure became markedly safer as no sharp introductory devices needed to remain inside the vascular lumen. António Caetano de Abreu Freire Egas Moniz (November 29, 1874 - December 13, 1955) was a Portuguese physician and neurologist. ... The Nobel Prizes (Swedish: ) are awarded for Physics, Chemistry, Literature, Peace, and Physiology or Medicine. ... Year 1949 (MCMXLIX) was a common year starting on Saturday (link will display the full calendar) of the Gregorian calendar. ... Year 1927 (MCMXXVII) was a common year starting on Saturday (link will display full calendar) of the Gregorian calendar. ... Cerebral angiography or arteriography is a form of medical imaging that visualises the arterial and venous supply of the brain. ... The Seldinger technique is a medical procedure to obtain safe access to blood vessels and other hollow organs. ... Year 1953 (MCMLIII) was a common year starting on Thursday (link will display full calendar) of the Gregorian calendar. ...


Angiograms require the insertion of a catheter into a peripheral artery, e.g. the femoral artery. Catheter disassembled In medicine, a catheter is a tube that can be inserted into a body cavity, duct or vessel. ... Femoral artery and its major branches - right thigh, anterior view. ...


As blood has the same radiodensity as the surrounding tissues, a radiocontrast agent (which absorbs X-rays) is added to the blood to make angiography visualization possible. The angiographic X-Ray image shows shadows of the openings within the cardiovascular structures carrying blood (actually the radiocontrast agent within). The blood vessels or heart chambers themselves remain largely to totally invisible on the X-Ray image. Radiodensity is the property of relative transparency to the passage of X-rays through a material. ... Radiocontrast agents (or simply contrast agents) are compounds used to improve the visibility of internal bodily structures in an X-ray image. ...


The X-ray images may be taken as either still images, displayed on a fluoroscope or film, useful for mapping an area. Alternatively, they may be motion images, usually taken at 30 frames per second, which also show the speed of blood (actually the speed of radiocontrast within the blood) traveling within the blood vessel. In the NATO phonetic alphabet, X-ray represents the letter X. An X-ray picture (radiograph) taken by Röntgen An X-ray is a form of electromagnetic radiation with a wavelength approximately in the range of 5 pm to 10 nanometers (corresponding to frequencies in the range 30 PHz... The fluoroscope is a medical instrument used by physicians to view the internal organs of the body best described as a motion X-ray. Like an x-ray machine it takes an image of the interior of the body, but unlike the x-ray it uses a powerful radiation source...


The most common angiogram performed is to visualize the blood in the coronary arteries. A long, thin, flexible tube called a catheter is used so as to administer the radiocontrast agent at the desired area to be visualized. The catheter is threaded into an artery in the groin or forearm, and the tip is advanced through the arterial system into one of the two major coronary arteries. X-ray images of the transient radiocontrast distribution within the blood flowing within the coronary arteries allows visualization of the size of the artery openings. Presence or absence of atherosclerosis or atheroma within the walls of the arteries cannot be clearly determined. See coronary catheterization for more detail. The coronary circulation consists of the blood vessels that supply blood to, and remove blood from, the heart. ... Catheter disassembled In medicine, a catheter is a tube that can be inserted into a body cavity, duct or vessel. ... The groin is the crease at the junction of the torso with the legs and the adjacent region that includes the external genitals. ... // The Human Forearm The forearm is the structure on the upper limb, between the elbow and the wrist. ... In the NATO phonetic alphabet, X-ray represents the letter X. An X-ray picture (radiograph) taken by Röntgen An X-ray is a form of electromagnetic radiation with a wavelength approximately in the range of 5 pm to 10 nanometers (corresponding to frequencies in the range 30 PHz... Radiocontrast agents (or simply contrast agents) are compounds used to improve the visibility of internal bodily structures in an X-ray image. ... Lumen can mean: Lumen (unit), the SI unit of luminous flux Lumen (anatomy), the cavity or channel within a tubular structure Thylakoid lumen, the inner membrane space of the chloroplast 141 Lumen, an asteroid discovered by the French astronomer Paul Henry in 1875 Lumen (band), an American post-rock band... In pathology, an atheroma (plural: atheromata) is an accumulation and swelling (-oma) in artery walls that is made up of cells, or cell debris, that contain lipids (cholesterol and fatty acids), calcium and a variable amount of fibrous connective tissue. ... Section of an artery For other uses, see Artery (disambiguation). ... Coronary angiogram A coronary catheterization is a minimally invasive procedure to access the coronary circulation and blood filled chambers of the heart using a catheter. ...


Angiography is also commonly performed to identify vessel narrowing in patients with retinal vascular disorders, such as diabetic retinopathy and macular degeneration. A stenosis is an abnormal narrowing in a blood vessel or other tubular organ or structure. ... Human eye cross-sectional view. ... Diabetic retinopathy is retinopathy (damage to the retina) caused by complications of diabetes mellitus, which could eventually lead to blindness. ... Listen to this article ( info) in media player in browser This audio file was created from an article revision dated 2005-07-19, and may not reflect subsequent edits to the article. ...


Types of angiographs

A coronary angiogram (an X-ray with radio-opaque contrast in the coronary arteries) that shows the left coronary circulation. The distal left main coronary artery (LMCA) is in the left upper quadrant of the image. Its main branches (also visible) are the left circumflex artery (LCX), which courses top-to-bottom initially and then toward the centre/bottom, and the left anterior descending (LAD) artery, which courses from left-to-right on the image and then courses down the middle of the image to project underneath of the distal LCX. The LAD, as is usual, has two large diagonal branches, which arise at the centre-top of the image and course toward the centre/right of the image.
A coronary angiogram (an X-ray with radio-opaque contrast in the coronary arteries) that shows the left coronary circulation. The distal left main coronary artery (LMCA) is in the left upper quadrant of the image. Its main branches (also visible) are the left circumflex artery (LCX), which courses top-to-bottom initially and then toward the centre/bottom, and the left anterior descending (LAD) artery, which courses from left-to-right on the image and then courses down the middle of the image to project underneath of the distal LCX. The LAD, as is usual, has two large diagonal branches, which arise at the centre-top of the image and course toward the centre/right of the image.

Angioplasty Owned by and taken of Bleiglass File links The following pages link to this file: Myocardial infarction Angioplasty Categories: GFDL images ... Angioplasty Owned by and taken of Bleiglass File links The following pages link to this file: Myocardial infarction Angioplasty Categories: GFDL images ... Angiography or arteriography is a medical imaging technique in which an X-ray picture is taken to visualize the inner opening of blood filled structures, including arteries, veins and the heart chambers. ... The coronary circulation consists of the blood vessels that supply blood to and from the heart muscle itself. ... The left coronary artery, abbreviated LCA and also known as the left main coronary artery (often abbreviated LMCA), arises from the aorta above the left cusp of the aortic valve. ... The LCX, or left circumflex artery (or circumflex artery, or circumflex branch of the left coronary artery) follows the left part of the coronary sulcus, running first to the left and then to the right, reaching nearly as far as the posterior longitudinal sulcus. ... The LAD, or left anterior descending artery (or anterior interventricular branch of the left coronary artery, or anterior descending branch) passes at first behind the pulmonary artery and then comes forward between that vessel and the left auricula to reach the anterior interventricular sulcus, along which it descends to the... Cerebral angiography or arteriography is a form of medical imaging that visualises the arterial and venous supply of the brain. ... A coronary catheterization is a minimally invasive procedure to access the coronary circulation and blood filled chambers of the heart using a catheter. ... In anatomy, the viscera are the internal organs of an animal, in particular the internal organs of the head, thorax and abdomen. ... Pulmonary angiography (or pulmonary arteriography) is a cardiological medical procedure. ... The heart and lungs (from an older edition of Grays Anatomy) The lung is an organ belonging to the respiratory system and interfacing to the circulatory system of air-breathing vertebrates. ... Lymphangiography is a radiographic procedure for imaging the lymphatic system. ... In anatomy, lymph vessels are thin walled, valved structures that carry lymph away from the tissues, through the lymph nodes and thoracic duct back to the general circulation. ... The aorta (generally pronounced [eɪˈɔːtə] or ay-orta) is the largest artery in the human body, originating from the left ventricle of the heart and bringing oxygenated blood to all parts of the body in the systemic circulation. ... ÁMagnetic Resonance Angiography is the imaging of blood vessels using Magnetic Resonance Imaging. ...

Historic usage

The term angiography, or angeiography, was originally used of a description of the weights, measures, vessels, etc, used by several nations. For other uses, see Weight (disambiguation). ... The former Weights and Measures office in Middlesex, England. ...


External links


  Results from FactBites:
 
Angiogram of the Lung (2272 words)
Lung (pulmonary) angiogram is used to evaluate the arteries that lead to the lungs (pulmonary arteries) and the blood vessels within the lungs.
Pulmonary angiogram is usually done to detect a pulmonary embolism, which is an obstruction within the pulmonary artery that suddenly decreases blood flow to the lungs.
Pulmonary angiogram may also be done to measure the pressure within the vessels supplying blood to the lungs, to look for lung abnormalities, or to detect blockage or narrowing of the vessels.
Angiogram (1655 words)
A cerebral angiogram is normally an out-patient procedure, with the patient being admitted in the morning and discharged home in the afternoon or evening.
A cerebral angiogram involves a study of the blood vessels in the head and neck.
During the course of the angiogram from the beginning to end, medications may be given to you to help take away any discomfort and to help you relax during the procedure.
  More results at FactBites »

 
 

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