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These xdcr steer the beam with a motor and focus the beam with an acoustic lens or a curved PZT element.

In a phased array system, everything listed below is possible EXCEPT:

If you wish to adjust the focusing characteristics while scanning with a curved linear array, what type of focusing are you manipulating?

If you wish to perform an ABD sonogram with the largest possible field of view in both the near and at depth, what type of array xdcr would be most preferable?

Annular arrays are most commonly categorized as:

Caffeine is an inhibitor of phosphodiesterase. Therefore, the cells of a person who has recently consumed coffee would have increased levels of-

Which of the following types of current xdcr assemblies applies electronic focusing to the slice thickness direction as well as the lateral resolution?

Longitudinal resolution is the same as:                                                                                       

Which of the following xdcr is electronically focused but mechanically steered?

White blood cells, such as a macrophage, engulf bacteria through the following process: