US Physics 121-150

What term refers to regions of decreased particle density in sound beam?

10-³ equals:

Which of the following represents the number 1234 in scientific notation?

One MHz equals:

Terms used to describe the strength of the sound beam include:

You are imaging with a 5 MHz linear array transducers. What sound parameter stays constant as the beam propagates through the tissue?

Ultrasound propagation velocity depends on:

You notice that the image in the far field is less bright compared to the near field. This is due to:

Acoustic impedance:

What determines the speed of sound?

You will NOT see refraction in the sonographic image if:

The rate of sound attenuation is lowest in:

When you perform a Doppler exam, the frequency of the transmitted signal is determined by:

Power divided by the beam area is equal to the:

Axial resolution is determined chiefly by:

Choose two benefits of tissue harmonic imaging

Acoustic impedance increases with which of the following:

When you adjust the pulse repetition frequency, you are changing:

Which of the following would increase the spatial pulsed length?

Doppler pulses used for diagnostic purposes are typically __ cycles long?

The time that it takes for one pulse to occur is known as the:

The length of space over which one cycle occurs is known as the:

Bandwidth refers to:

When sound strikes a specular reflector at an oblique angle, the angle of reflection is:

Which describes constructive interference?

The dark area indicated by the arrow in this image is primarily due to:

Which sound beam frequency would exhibit the greatest intensity loss with increasing depth?

Interference patterns of reflected waves causes:

Attenuation of the sound beam is affected by:

The transfer of acoustic energy into heat is termed: