Soft tissue propagation speed is approximately what value in mm/us?

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Multiple Choice

Soft tissue propagation speed is approximately what value in mm/us?

Explanation:
The main concept is the speed of ultrasound in soft tissue. In soft tissue, sound travels about 1540 meters per second, which translates to 1.54 millimeters per microsecond. This conversion is handy because distances are often found from travel time: distance equals speed times time, and in imaging we use the round-trip time, so distance = (c × t) / 2. So 1.54 mm per microsecond corresponds to the commonly cited soft-tissue speed of about 1540 m/s. The other numbers would reflect speeds for media quite different from soft tissue (for example, air or bone), not typical soft tissue.

The main concept is the speed of ultrasound in soft tissue. In soft tissue, sound travels about 1540 meters per second, which translates to 1.54 millimeters per microsecond. This conversion is handy because distances are often found from travel time: distance equals speed times time, and in imaging we use the round-trip time, so distance = (c × t) / 2.

So 1.54 mm per microsecond corresponds to the commonly cited soft-tissue speed of about 1540 m/s. The other numbers would reflect speeds for media quite different from soft tissue (for example, air or bone), not typical soft tissue.

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