Ultrasonography

Diagnostic ultra sound uses ___ frequency ___ waves

What is the frequency typically used?

• 1 - 5 MHz

• 5 - 10 MHz

• 10 - 15 MHz

• 15 - 20 MHz

• 20 - 25 MHz

What velocity does it take for a sound wave to pass through air?

• 270 m/s

• 280 m/s

• 300 m/s

• 330 m/s

• 350 m/s

What velocity does it take for a sound wave to pass through soft tissue?

• 1560 m/s

• 1540 m/s

• 1510 m/s

• 1570 m/s

• 1500 m/s

What velocity does it take for a sound wave to pass through bone?

• 3000 m/s

• 3100 m/s

• 3200 m/s

• 3300 m/s

• 3400 m/s

The piezoelectric effect is the conversion of ___ energy to ___ to create a sound wave

An electrical voltage is applied to a ___ within a ___

Select the two diffrent types of material commonly used in transducers ...

• PBTF

• PVDF

• PCVD

• PACT

• PZT

What is PZT transducer made of?

• Lead zirconate titanate

• Fluoride polyvinyl

• Polyvinylidine difluoride

• Lead fluoride

What is PVDF transducer made of?

• Lead zirconate titanate

• Fluoride polyvinyl

• Polyvinylidine difluoride

• Lead fluoride