Approximately what is the one-way travel time for sound to travel 1 cm in soft tissue?

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Multiple Choice

Approximately what is the one-way travel time for sound to travel 1 cm in soft tissue?

Explanation:
One-way travel time is found by dividing the distance by the speed of sound in the tissue. In soft tissue, the speed of sound is about 1540 meters per second, which is roughly 1.54 millimeters per microsecond. For 1 centimeter (10 millimeters), the time is 10 mm ÷ 1.54 mm/µs ≈ 6.5 µs. So the one-way travel time is about 6.5 microseconds. Remember, this is a one-way value; the round-trip time to return echoes from 1 cm away would be about twice that, roughly 13 µs. This speed value (around 1540 m/s) is the standard reference used for quick estimates in ultrasound.

One-way travel time is found by dividing the distance by the speed of sound in the tissue. In soft tissue, the speed of sound is about 1540 meters per second, which is roughly 1.54 millimeters per microsecond. For 1 centimeter (10 millimeters), the time is 10 mm ÷ 1.54 mm/µs ≈ 6.5 µs. So the one-way travel time is about 6.5 microseconds. Remember, this is a one-way value; the round-trip time to return echoes from 1 cm away would be about twice that, roughly 13 µs. This speed value (around 1540 m/s) is the standard reference used for quick estimates in ultrasound.

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