The principle which states that all points on a wavefront can be considered as point sources for the production of spherical secondary wavelets was postulated by:

Bandwidth can be increased by:

In u/s systems, the range equation is used to determine which of the following?

Which of the following xdcr creates a sector image shape?

What is TRUE of the xdcr quality factor?

A maximum degree of depth resolution can be obtained through the use of all of the following  EXCEPT:                                                                                                    

Which component of an u/s system is made of lead zirconate titanate?

A decrease in pulse duration results in _____ in frequency bandwidth:

The backing material that is usually constructed in a continuous wave Doppler xdcr is:

Which of the following xdcr is capable of providing the BEST spatial resolution?