A sound beam encounters an interface at a 90° angle. If the speed of sound in the first tissue is 1540 m/s and the speed of sound in the second tissue is 1450 m/s, which of the following numbers most closely approximates the angle of beam transmission?

There is “bleeding” of color pixels outside of the vessel, indicating a color gain setting that is too high.

Spectral Doppler waveform (Figure ic.1) could be corrected by:

Identifying tissues with similar shades of gray equates most to which of the following?

The speed of sound in soft tissue is:

Rayleigh scattering occurs when

Two sound beams with different frequencies are traveling through soft tissue. Which beam will travel faster?

 The duty factor is 1 (100%) with CW, so if TA = PA × DF, with CW the TA = PA

The slice-thickness plane is focused with a lens in — array transducers.

Range ambiguity artifact (arrowheads) within a bladder, resulting from the operation of concurrent beams (image A). The artifact disappears when the depth of display is —– (image B) , it is the same as decreasing the PRF.