The location where the sound beam reaches its narrowest diameter is known as the :

In an u/s phantom the targets typically used for measuring axial resolution are:

What is meant by the dead zone in performing testing?

Which of the following should be checked as a component of a quality control program?

What is the main advantage of using an intracavitary probe compared to a standard transducer? 

What technique is used to fill in the empty data between the scan lines?

A waveform from the internal carotid artery obtained at a Doppler angle of 450 shows aliasing.  Which of the following choices will help you unwrap this waveform? (Unwrap means reduce aliasing)

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

Which intensity descriptor has the lowest numerical value for the characterization of a pulsed wave u/s field?

What system control can you adjust to compensate for the effort of sound attenuation in the body?