Real-time imaging using sound waves without radiation, dynamic, operator-dependent
Expansion
Ultrasound
Purpose
First-line for pregnancy, acute abdomen, vascular assessment; excellent soft tissue characterisation
Clinical Context
US uses 2 to 18 megahertz transducers. Real-time, no radiation, portable, and cost-effective. Limitations include poor bone visualisation, operator-dependent technique, and limited field of view.
Related Terms
- Sonography
- Echo
- Ultrasonic imaging
Key Points
- US limited by bone and air; no radiation; excellent for real-time guidance; very operator-dependent