A diagnostic medical sonographer, also known simply as a sonographer, uses imaging equipment and sound waves to form images of many parts of the body, known as ultrasounds. Since ultrasound is a non-invasive way to visualize internal organs, it is often the first imaging test performed when disease is detected. A sonographer is a healthcare professional who specialises in the use of ultrasonic imaging devices to produce diagnostic images, scans, videos or three-dimensional volumes of anatomy and diagnostic data. The requirements for clinical practice vary greatly by country. Sonography requires specialised education and skills to acquire, analyse and optimize information in the image. Due to the high levels of decisional latitude and diagnostic input, sonographers have a high degree of responsibility in the diagnostic process. Many countries require medical sonographers to have professional certification. Sonographers have core knowledge in ultrasound physics, cross-sectional anatomy, physiology, and pathology.

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