What is the most likely cause for a beam thickness artifact?

Which of the following transducers would be most useful for good penetration on an obese patient? 

Transducers may be focused by internal focusing and external focusing.  These are accomplished by

Refraction will not occur at an interface

Which of the following image shapes is produced by a linear sequenced array real-time transducer? 

Which letter corresponds to the matching layer of the transducer in the following image?

Which of the following is an example of a transducer? 

Which of the following is not a component of the time gain compensation (TGC) curve?

Which of the following produces false echoes that are occasionally seen in fluid-filled masses? 

Axial resolution is also known as all of the following except: