Showing posts with label imaging. Show all posts
Showing posts with label imaging. Show all posts

Wednesday, August 17, 2011

Latest heart health news

It is a common fact that better information leads to better health care. There are constant development taking place in the field of medicine. Thanks to research new methods of treatment are being developed day by day in order to prevent or treat major health care problems.

Heart attacks strike without a warning but new imaging tests could predict the likely hood of heart attack. The new imaging test give a clear picture of accumulation of  fat or  plaque buildup in blood vessels. A number of imaging tests have been invented that could show in advance many risk being faced by the organ.  If you are a high risk patient proper treatment could lower the risk. 

Dr. Arthur Agatston is a cardiologist from Miami he  invented a coronary calcium scan. The scan looks at plaque in the arteries.  Another ultrasound test is able to discover plaque in the carotid artery. This a vessel that delivers blood to the brain. This test is hence able to predict high risk of stroke.  

Both the test are non invasive however in calcium scan exposure to radiation may be there. These tests should be routinely conducted after fifty years of age. This will lead to better health care.   

Sunday, July 25, 2010

Heart disease diagnosis using medical imaging

Medical imaging comprises of variety of technique used to scan and take images of various parts of human body. The purpose is clinical and diagnostic in nature. Medical imaging is by and large a part of biological imaging and is often used research and in studies besides diagnosis

Medical imagery incorporates various discipline of science like nuclear, radiology, photography endoscopy and microscopy. In clinics radiology is used most often by expert radiologists. Hence in broader sense imaging for purpose is a sub discipline of medical engineering and medicine. 

The primary benefits are safety, cost and better diagnostic. Medical imaging plays an important role in this method of treatment and diagnosis. It assists non surgical disease diagnosis and hence treatment.         

The developments in the field of imagery for clinical and medical purposes have changed the entire paradigm of disease management. With further development in health sciences non invasive cardiology is becoming popular. The techniques find extensive use in heart disease treatment especially for diagnosing blocked arteries and other heart blockages.

Though these techniques are mostly non invasive but do incorporate invasive technique where ever necessary. Angiography is one such example of fluoroscopy where catheter guidance is required. Though purely applicable to cardiology, neuroscience and psychology medical imaging finds application in industries and scientific research.

In case of cardiology these techniques are used in coronary angiography and 3 D angio-cardiography. While in case of angiography, diagnosis is an invasive technique, the latter is non invasive process. In case of 3 D angio-cardiography data acquisition is carried out using and machine. The next step is DSP or digital signal processing along with VAD or Vertical acceleration detector to record blood flow pattern during various stages of heart function or cardiac cycles. Thus various data accumulated by this method is used to determine blockages with application of cartography.

Diagnosing heart disease has become safer due to non interventional processes. This is useful in angina pain treatment by detecting blood flow in the heart muscles and blockages. Non surgical procedures in case of heart treatment are being looked into with great hope.

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.