What type of focusing decreases the frame rate?

The type of xdcr for which the method of scanning is most similar to that of a linear array is:

Which type of detail resolution is included in the anachronism LARD?                   

Linear phased array scanners need NO form of mechanical focusing since focusing is performed electronically.

The use of more active elements to form a beam with a greater time of flight is called:

An annular phased array xdcr is different than a linear phased array system in which way?

You are imaging a patient with a thickened GB wall.  In what direction can the wall thickness be measured most accurately?                                                                       

With these xdcr, a trapezoidal image shape is produced. The image is flat at the top and becomes progressively wider at increasing depths.

Which xdcr has the WORST axial resolution?                                                                      

The lateral resolution of an u/s system is 4 mm.  Two structures are separated by 3 mm and lie side by side in relation to the sound beam’s main axis.  What will most likely appear on the display of the system?