Diagnostic ultrasound or sonography is an imaging method that uses high-frequency sound waves to produce images of structures within the body. An instrument called a transducer emits high-frequency sound and then records the returning echoes as the sound waves bounce back to the transducer. The information is relayed in real time to produce images on a display screen. Ultrasonographers have special training in how to position the transducers to perform various exams. A radiologist interprets the ultrasound images. This technology can provide valuable information for diagnosing and treating a variety of diseases and conditions.
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