What is Ultrasound?
Ultrasound is like ordinary sound except it has a frequency (or pitch) higher than human beings can hear. When sent into your body from a device called a transducer resting on your neck, the sound echoes back from the organs inside your body. These returning echoes are converted by a computer into a picture. During your thyroid ultrasound examination, ultrasound will produce pictures of your thyroid gland, including its size, shape, and blood vessels. The ultrasound will reveal any nodules (lumps) or cysts (lumps with fluid) that may be present in your thyroid gland. An ultrasound examination is commonly called the practice of sonography, but also may be referred to as diagnostic ultrasound imaging.
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