Biology
- #83 Question 6
The diagram below shows pressure changes in the left atrium and left ventricle of the heart and the aorta during the cardiac cycle. (a) Calculate how many heart beats there will be in one minute. (2 marks)(b) (i) On the diagram, indicate the point at...
- #46 The Heart
The mammalian heart is a double pump: - The right side pumps deoxygenated blood at low pressure to the lungs. - The oxygenated blood then returns to the left side of the heart in the pulmonary vein.- The left side pumps oxygenated blood...
- Angioplasty
Term: angioplastyLiterally meaning: ?vessel forming? or ?vessel molding??Origin: Anc Greek??????/aggio (=vessel, receptacle) > ?????/aggos(=tube)+??????/plasso(=to shape) Coined/HistoryThe term was coined in January...
- Angioscopy
Term: angioscopyLiterally meaning: ?examination of vessel?Origin: Anc Greek??????/aggio (=vessel, receptacle) > ?????/aggos(=tube)+ ??????/scopos(=aim, look at) Coined/HistoryThe first record for a successful angioscopy was by surgeons during operations...
- Tomography, Tomograph, Tomogram
Term: tomography Literally meaning: ?the process of writing the slices? Origin: Anc Greek????/tome(=section, slice, trunk, stalk) >?????/temno(=cut) -??????/graphia(=-graphy, a combining form denoting something written or represented as...
Biology
angiography
Term: angiography
Literally meaning: ?image(record) of the vessels?
Origin: Anc Greek
??????/aggio (=vessel, receptacle) > ?????/aggos(=tube)
+(-??????)/-graphia(=-graphy, a combining form denoting something written or represented as in words biography, geography, photography
> ??????/gramma(=letter)
Coined/History
This technique was first developed in the year 1927 by a Portuguese physician and neurologist Egas Moniz who performed the first cerebral angiogram in Lisbon in 1927, and Reynaldo Cid dos Santos performed the first aortogram in the same city in 1929. The first attempt at cardiac catheterization and angiocardiography was made by Forsmann in 1929. Cardiac cauterisation is where a tube is inserted directly into the arteries surrounding the heart, and a substance is put into the blood which contrasts with the tissue of the heart. A further turning point came in 1941 when Cournand demonstrated that cardiac catheterization was a safe method in man. In 1953, a final major milestone was reached when Seldinger developed his percutaneous technique for cardiac catheterization. Using this technique, the catheter is introduced into the body at a remote site, usually the femoral artery and the wire is threaded up the arterial system to the heart where the dye is introduced.
Source
Wilms G, Baert AL. The history of angiography. J Belge Radiol. 1995 Oct;78(5):299-302.
Definition
Angiography is the technique which is used in order to visualize the inside of blood vessels such as luminal narrowing and obstruction of aneurysmal. During the procedure the radiologist inserts a thin tube (catheter) in to artery and an injection of a liquid dye is used to make the arteries easily visible on X-rays .- #83 Question 6
The diagram below shows pressure changes in the left atrium and left ventricle of the heart and the aorta during the cardiac cycle. (a) Calculate how many heart beats there will be in one minute. (2 marks)(b) (i) On the diagram, indicate the point at...
- #46 The Heart
The mammalian heart is a double pump: - The right side pumps deoxygenated blood at low pressure to the lungs. - The oxygenated blood then returns to the left side of the heart in the pulmonary vein.- The left side pumps oxygenated blood...
- Angioplasty
Term: angioplastyLiterally meaning: ?vessel forming? or ?vessel molding??Origin: Anc Greek??????/aggio (=vessel, receptacle) > ?????/aggos(=tube)+??????/plasso(=to shape) Coined/HistoryThe term was coined in January...
- Angioscopy
Term: angioscopyLiterally meaning: ?examination of vessel?Origin: Anc Greek??????/aggio (=vessel, receptacle) > ?????/aggos(=tube)+ ??????/scopos(=aim, look at) Coined/HistoryThe first record for a successful angioscopy was by surgeons during operations...
- Tomography, Tomograph, Tomogram
Term: tomography Literally meaning: ?the process of writing the slices? Origin: Anc Greek????/tome(=section, slice, trunk, stalk) >?????/temno(=cut) -??????/graphia(=-graphy, a combining form denoting something written or represented as...