FREE ARDMS Sonography Principles & Instrumentation Questions and Answers

Question 1

What happens to the visual display when a mechanical transducer's PZT crystal is damaged?

Accepted Answer

Loss of entire image

Answer

Inconsistent beam steering and focusing

Answer

Horizontal band of dropout

Answer

Vertical band of dropout

Question 2

Many PZT crystals are placed in an arched line with ______ transducers.

Accepted Answer

Convex array

Answer

Linear array

Answer

Mechanical

Answer

Annular array

Question 3

A sonographer is using an annular array transducer to do an examination. In the near field of the image that is being presented, there is a horizontal band of dropout. Which PZT crystal ring damage does this most likely relate to?

Accepted Answer

Innermost ring

Answer

Outermost ring

Answer

The resulting image would have a vertical band of dropout with an annular array transducer

Answer

Middle ring

Question 4

The PZT crystal in a linear phased array transducer is divided into 280 distinct active elements. This transducer has how many channels?

Accepted Answer

280

Answer

560

Answer

140

Answer

1

Question 5

Active elements in 3D transducers are arranged in a particular pattern, or _________.

Accepted Answer

Checkerboard

Answer

Straight

Answer

Arched

Answer

Backgammon

Question 6

When depth is raised, which of the following happens?

Accepted Answer

Frame rate decreases

Answer

Tframe shortens

Answer

Time of flight decreases

Answer

Temporal resolution increases

Question 7

The sonographer increased output power by changing system settings. Which of the subsequent takes place?

Accepted Answer

Overall gain increases

Answer

Voltage decreases

Answer

Penetration decreases

Answer

The displayed image darkens