Question

question 4 (multiple choice worth 2 points) (03.03r lc) sonography captures images by using: the speed of a sound and wave reflection the reflection and refraction of the sound wave the distance between the receiver and the wave intensity the wave intensity and sound speed

Explanation:

Sonography uses high - frequency sound waves. The sound waves travel through the body and when they encounter different tissues, they reflect back. The machine measures the time it takes for the waves to return (related to sound speed) and the pattern of reflections. Refraction is not the main principle in sonography for image - capture. Wave intensity and distance between receiver and wave are not the primary factors for image formation in the way described in the other options.

Answer:

A. the speed of a sound and wave reflection