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Fantastic Form-ula
Viva La Resolution
Duck Duck Transducer
So you think you can Impedance
Physics Free For All
100

Wavelength

wavelength = C/F

100
What other names are synonymous with axial resolution.
What is Longitudinal, Axial, Radial, Range, and Depth?
100
Thicker crystals are associated with _____ frequency sound waves.
What are lower frequency sound waves?
100
Acoustic Impedance equals ______.
What is propagation velocity x density?
100

How long does it take for an ultrasound wave to travel 3 cm in tissue.

What is 39 microseconds.

200

Bandwidth

Highest F - Lowest F

200
_____ is defined as the number of frames or images created each second.
What is frame rate?
200
This type of transducer is comprised of circular elements within one another.
What is an Annular Array Transducer?
200

The relationship between frequency and attenuation

What is direct?

200
Name the 2 types of waves.
What are electromagnetic and mechanical?
300

DF

PD/PRP x 100

300
Axial, lateral, and temporal resolution equal __________.
What is Spatial Resolution?
300
Which type of transducer has a greater quality factor: imaging or therapeutic?
What is Therapeutic transducers?
300

Units for impedance are measured in _____?

What are Rayls.

300

Electronic slope does this to the sound beam. 

What is steering? 

400

SPL/2

What is Axial resolution?

400

True / False: Pulse duration doesn't have a profound influence on lateral resolution

What is true

400
Frequency and PZT thickness are directly related: true or false?
What is False. They are inversely related.
400

Which has the highest impedance? Gel, PZT, skin, matching layer

what is PZT?

400

This artifact is caused by a highly attenuating structure. 

What is shadowing

500
Intensity
What is power/area?
500

Lateral resolution is equal to _________

Beam diameter

500

If the temperature of the PZT crystal is elevated above the Curie Point, ______ occurs?

What is depolarization?

500

What 2 things are needed for refraction to occur?

What are oblique incidence and different propagation speeds?
500

Stable cavitation relates to _______ bubbles and transient cavitation relates to ________ bubbles. 

What is oscillating and bursting