Ultrasound

Ultrasound, also known as sonography, uses a transducer placed on the body to emit sound waves and generate images. It is useful to evaluate soft tissues or hollow structures like the gallbladder or blood vessels. Ultrasound is also utilized to guide radiologists as they perform certain procedures such as a biopsy, abscess drainage, or joint injection. Ultrasound does not use radiation so it is safe and useful to evaluate pregnancies. In some cases special preparation such as fasting may be required prior to the examination.