angiography

angiography
angiographic /an'jee euh graf"ik/, adj.
/an'jee og"reuh fee/, n.
x-ray examination of blood vessels or lymphatics following injection of a radiopaque substance.
[1720-30; ANGIO- + -GRAPHY]

* * *

X-ray examination of arteries and veins with a contrast medium to differentiate them from surrounding organs.

The contrast medium is introduced through a catheter to show the blood vessels and the structures they supply, including organs. Angiography of diseased leg, brain, or heart arteries is necessary before corrective surgery. See also angiocardiography.

* * *

also called  Arteriography, 

      radiographic examination of arteries and veins, one of the procedures of diagnostic imaging. These structures cannot be differentiated from the surrounding organs in conventional radiography. It is therefore necessary to inject into the lumen of the vessels a substance that will distinguish them from the surrounding tissues. The contrast medium used is a water-soluble substance containing iodine. On the radiograph, iodine-containing structures cast a denser shadow than do other body tissues. The technique now in use was perfected in 1953.

      A needle is used to puncture the main artery in the groin, armpit, or crook of the arm and to place a coiled wire in the artery. The needle is withdrawn, and a small, flexible hollow tube (catheter (catheterization)) is passed over the wire and into the artery. The wire is removed, and contrast medium is injected through the catheter. Both the arteries and the structures they supply with blood can be visualized. All organs of the body can be examined in this way. Radiographic evaluations of diseased arteries supplying the legs, the brain, and the heart are necessary before corrective surgical procedures are undertaken. See also angiocardiography.

* * *


Universalium. 2010.

Игры ⚽ Поможем сделать НИР

Look at other dictionaries:

  • Angiography — Intervention Angiogram showing a transverse projection of the vertebrobasilar and posterior cerebral circulation …   Wikipedia

  • Angiography — An gi*og ra*phy, n. [Angio + graphy: cf. F. angiographie.] 1. (Anat.) A description of blood vessels and lymphatics. [1913 Webster] 2. (Med.) a diagnostic procedure in which the location and size of blood vessels may be visualized by taking an X… …   The Collaborative International Dictionary of English

  • angiography — (n.) 1731, from ANGIO (Cf. angio ) + GRAPHY (Cf. graphy) …   Etymology dictionary

  • angiography — [an΄jē äg′rə fē] n. [ ANGIO + GRAPHY] the process of making X ray pictures of blood vessels after first injecting a radiopaque substance angiographic [an΄jē ə graf′ik] adj …   English World dictionary

  • angiography — Radiography of vessels after the injection of a radiopaque contrast material; usually requires percutaneous insertion of a radiopaque catheter and positioning under fluoroscopic control. SEE ALSO …   Medical dictionary

  • angiography — n. imaging of blood vessels (see also coronary angiography, lymphangiography). Fluoroscopic angiography is performed by injection of contrast medium during X ray fluoroscopy. Positive (radiopaque) contrast medium containing iodine or, more… …   The new mediacal dictionary

  • Angiography, coronary — The most accurate method (the gold standard ) for evaluating and defining coronary artery disease (CAD). Coronary angiography is used to identify the exact location and severity of CAD. During coronary angiography, a small catheter (a thin hollow …   Medical dictionary

  • Angiography, fluorescein — A test to examine blood vessels in the retina, choroid, and iris of the eye. A special dye is injected into a vein in the arm and pictures are taken as the dye passes through the blood vessels in the eye. The dye is injected into a vein in the… …   Medical dictionary

  • angiography — noun Date: 1933 the radiographic visualization of the blood vessels after injection of a radiopaque substance • angiographic adjective • angiographically adverb …   New Collegiate Dictionary

  • angiography — noun A medical imaging technique in which an X ray image is taken to visualize the inside of blood vessels and organs of the body, with particular interest in the arteries, veins and the heart chambers. Syn: arteriography See Also: angiograph,… …   Wiktionary

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”