What does US commonly stand for in medical terminology?

• A. United States
• B. Ultrasound
• C. Ultrasound therapy
• D. Ultrasonography

Answer: (B)

In medical terminology, US is most commonly shorthand for ultrasound. This imaging modality uses high-frequency sound waves to visualize internal organs and tissues, and in clinical practice the abbreviation US is routinely put on orders and reports to indicate an ultrasound examination. Ultrasonography is the formal name of the technique, but the everyday shorthand you’ll see in charts and notes is US for ultrasound. The other options refer to a country (United States) or a different concept (ultrasound therapy) or the full procedure name, and they’re not the standard shorthand used in typical medical documentation. So ultrasound is the best answer because it reflects the common clinical shorthand for the imaging modality.