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

The transducers below are imaging a vessel at different angles.  The arrow indicates the direction of blood flow.  Which transducer will detect the largest Doppler frequency shift? Physics flow direction.png

What color represents flow at 90 degrees to the sound beam? Physics color map(1).png

String test objects are used to evaluate:

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

What transducer component reduces reflection at the transducer/skin interface?

Which control would you adjust to alter the dynamic range of the displayed echoes?

For a single transducer to offer multiple frequency selections for scanning it must have:

A typical value for the duty factor in diagnostic sonographic imaging is:

While performing a color Doppler exam in the abdomen you  have several system controls and notice that the frame rate has decreased.  Which of the following adjustments can you make to improve the color frame rate?