Ultrasound
Ultrasound, also called sonography, uses high-frequency sound waves to create images of structures inside the body. The exam does not use X-rays. A sonographer moves a small probe over the area being examined, usually with water-based gel on the skin. The probe sends out sound waves and receives the returning echoes, which are turned into images in real time.
Ultrasound can help assess organs and soft tissues such as the liver, gallbladder, kidneys, bladder, uterus and ovaries. It can also show movement and blood flow. Depending on the clinical question, ultrasound may be used for:
- Pregnancy imaging to assess fetal growth and well-being.
- Breast imaging to investigate a symptom or take a closer look at an area identified on another exam.
- Musculoskeletal imaging to assess muscles, tendons, ligaments, joints and other soft tissues.