Ultrasound Quiz ft. Endoscopy (Taylor's Version)

What are sound waves above 20kHz called?

• Infrasound

• Ultrasound

• Megasound

• Supersound

What frequency range does diagnostic ultrasound use?

• 2Hz - 20Hz

• 20Hz - 20,000Hz

• 2kHz - 20kHz

• 2MHz - 20MHz

During ultrasonography, what happens to sound waves when they are sent into the body?

• They are absorbed by the tissues.

• They are reflected back from the tissues.

• They pass through the tissues without any change.

• They are converted into light waves.

What converts the returning echoes into an image in the piezoelectric effect?

• The strength of the sound waves.

• Crystals in the transducer

• The speed of the sound waves.

• The temperature of the tissues.

What is the term used to describe the distance over which the sound wave emitted by the crystal remains parallel to the crystal?

• Far field

• Near field

• Resolution field

• Spread field

Where is resolution lost in the context of ultrasound?

• Near field

• Far field

• Crystal field

• Spread field

Where should the object of interest ideally be placed in ultrasound imaging?

• Near field

• Far field

• Crystal field

• Spread field

What is the term used to describe the dependence of sound speed on the material it travels through?

• Acoustic resonance

• Acoustic impedance

• Acoustic reflection

• Acoustic refraction

What does the term "echogenicity" refer to in the context of ultrasound?

• Brightness

• Darkness

• Color

• Frequency

What is the term used to describe a brighter area in an ultrasound image?

• Hypoechoic

• Anechoic

• Hyperechoic

• Complex