Sonography is a diagnostic medical procedure that uses high frequency of sound waves to produce dynamic visual real images of organs, tissues, or blood flow inside the body. This type of procedure is called a sonogram. There are several areas of specialization in the field. Sonography is increasingly being used in the detection and treatment of heart disease, heart attack, and vascular disease that can lead to stroke. It is also used to guide needles for tissue biopsies taken for testing under a microscope.
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