chapter 7 and 8

The parts of ultrasound transducer include all the following except

• Matching layer

• Aspartate aminotransferase

• Lead zincronate titanate

• Backing material

The maximum temperature used to disinfect the ultrasound transducer without being damaged is termed

• Reynolds temperature

• Curie temperature

• Huygens temperature

• Bernoullis temperature

The operating frequency of the ultrasound probe is

• Inversely related to PZT thickness

• Directly related to PZT thickness

• Directly related to PZT propagation speed

• Inversely related to PZT propagation speed

Optimal thickness of the PZT crystal

• 1/8

• 1/4

• 1/2

• 1/10

Optimal thickness of matching layer

• 1/4

• 1/2

• 1/10

• 1/3

In an imaging tranducer, what is the purpose of attaching the backing material to the PZt?

• Improve image quaility

• Decrease the transducers sensitivity

• Increase the bandwidth

• Decrease the Q-factor

The conversion of an incident pressure wave to an electric signal is the

• Piezoelectric effect

• Bernoullis effect

• Snells law

• Doppler effect

The range of frequencies contained in a ultrasonic pulse is the

• Operating frequency

• Average frequency

• Bandwidth

Coupling medium is applied to the tranducer-tissue boundary to increase, ___ of the sound wave

• Reflection

• Scattering

• Refraction

• Transmission

Electric ____ Applied to a tranducer are converted to ultrasound

• Wave

• Echos

• Pulse

• Voltage