Transducers types

What does damage to one of the elements of a phased array result in?

• Complete loss of image

• Partial loss of the right side image

• Inconsistent or erratic beam steering and focusing

• None of the above

How many elements in a phased array probe are used to create a single sound pulse?

• 1

• All

• 2

• 0

In a phased array system, how does the pattern of electrical spikes from the ultrasound system steer the sound beam in different directions?

• Each active element creates a small sound wavelet, they interfere forming a single beam

• Each active element creates a large sound wavelet, they interfere forming a single beam

• Each active element creates a small sound wavelet, they interfere forming two beam

• Each active element creates a large sound wavelet, they interfere forming a triple beam

The electronics within the ultrasound system create these patterns is called the (a)  

In a linear phased array, when a spike pattern is in a straight line, an (a)   sound beam is created

The curved pattern creates a (a)   sound beam during transmission in a linear phased array transducer

In a linear phased array, slope =

(a)  

In a linear phased array, curvature =

(a)  

A more accurate image is created when the ultrasound receiver introduces (a)  

The optimal time delays used during receive focusing depends upon the (a)   at which the reflection was created