Thursday, July 15, 2010

Medical Imaging

Coronary Angiography


This is a imaging technique used for detecting blockages in the blood circulatory system. The lumen of coronary arteries and veins are visualized by injecting a radio opaque chemical and then taking the image using fluoroscope. Angiography also called arteriography is defined as projection radiography.    

Medical imaging is used for clinical purpose and has diverse applications. It is basically investigative and diagnostic in nature. This procedure Egas Moniz of Portugal in year 1927. It has since then been developed significantly in order to make it more safe and effective. The variations  have been developed a Color DSA and  3 D DSA . 

There are many variations of coronary angiography techniques used in hospitals. The procedure depends upon the part of the body which is subject to imaging. The imaging procedure output is known as angiogram. A catheter is used to inject the chemical agent in the coronary artery to be scanned. This is helpful in locating blockages, visualizing blood flow and openings of the arteries.      

There are some cases of kidney damage, dye rejection, blood clot etc during angiography. Hence the technique is not absolutely safe.  The non invasive form of procedure used is 3D angiocardiography which is affordable as well. 

Medical imaging plays a crucial role in disease diagnostic and treatment. The procedures are widely used in diagnosing blood circulatory problems and heart imagery. These costly and bit unsafe with advnce in research the output is better.  

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