In the image below, how many transmit focal zones are being used?  

Flow reversal in early diastole and lack of flow in late diastole is demonstrated with: _______

An artifact that results from refraction of the ultrasound beam at a muscle-fat interface and give rise to double images is called

If a patient has normal arterial waveforms with low velocities in the vessels, which is most likely?

How can you adjust the elevation focus to a more superficial location in a 1D array transducer?

How we can calculate the best axial resolution that can be obtained with a given transducer?

The Pulsed-Doppler system yields better depth resolution than the continuous wave (CW) system.

In this image, the Doppler spectral display exhibits _________

With oblique incidence of sound beam, if the velocity of the initial medium is greater than the velocity of the following medium, _______

A sound pulse emitted from a transducer travels in an ultrasound phantom, reflects off of pin “C”, and returns to the transducer in 52 μs. What is the total distance that the pulse traveled?