Cardiovascular disease diagnostic techniques

Cardiovascular disease diagnostic techniques


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Photograph illustrating techniques used in the diagnosis of cardiovascular diseases. The subject is being examined with a stethoscope, an instrument for listening to the sounds of the heart and lungs. In background is an angiogram of a person with an enlarged heart due to high blood pressure (hypertension). An angiogram is an X-ray image of arteries that have been outlined by prior injection of a radio-opaque contrast medium. Large arteries appear pale white, with details of the ribs and spine appearing more feint. The catheter tube used to introduce the contrast medium appears as a fine curved line on the angiogram.

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