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

During a sonographic examination of a large vessel, a 450 beam to vessel angle would be called:

In the image below, the waveform indicates poststenotic turbulence.  What term describes the point at which flow becomes turbulent? physics turbulence.jpg

Describe competition and the principle of competitive exclusion; please be specific in your description.  In addition, contrast intraspecific and interspecific competition using named examples.

A 56-year-old patient presents to the ED with substernal chest pain. The following orders are placed. Which order is the priority for the nurse to complete?   

While performing a sonogram, to minimize risk to the fetus, which imaging mode trade-off would most be applicable?

The propagation speed for sound is lowest in which of the following biological tissue?

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?