What is the speed of sound in soft tissue?

The speed of sound in soft tissue is approximately 1540 meters per second (m/s). This value is important in ultrasound because it serves as a standard reference for the propagation of sound waves in biological tissues. Understanding this speed allows sonographers to calculate various parameters, such as depth and distance, based on the time it takes for sound waves to travel to a structure and back.

The speed of sound can vary slightly depending on the specific characteristics of the tissue, including density and elasticity, but 1540 m/s is widely accepted in clinical practice. This speed is crucial for accurate imaging and diagnostic procedures, as it directly impacts the resolution and quality of ultrasound images.

The other options represent different speeds of sound in various media; for example, air has a much lower speed of sound, about 340 m/s, while other tissues might approximate the lower figures provided. Understanding the correct value helps in distinguishing between different types of materials and their acoustic properties, ensuring effective use of ultrasound technology.