Ultrasound Modalities in Medicine

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What are the two modalities of ultrasound mentioned in the text?

Static energy and dynamic energy

Continuous energy and pulsed energy (correct)

Single energy and multiple energy

Fast energy and slow energy

Which ultrasound modality uses a steady sound source for applications like fetal heart beat detectors?

Continuous sound energy (correct)

Static sound energy

Pulsed sound energy

Dynamic sound energy

What type of ultrasound uses a quick blip of sound followed by a relatively long pause?

Continuous sound energy

Variable sound energy

Dynamic sound energy

Pulsed sound energy (correct)

How is a two-dimensional image created in ultrasound imaging?

By electronic processing of returning sounds Signup and view all the answers

What generates the electrical pulses for ultrasound transducers in conventional imaging?

Pulse generator Signup and view all the answers

At what rate are pulses produced in conventional ultrasound imaging?

~1,000 pulses per second Signup and view all the answers

What type of waves does ultrasound rely on to image the body?

High-frequency waves Signup and view all the answers

What type of waves are ultrasound waves in the body?

Longitudinal waves Signup and view all the answers

What is the bandwidth of a typical ultrasound pulse dominated by?

Center frequency Signup and view all the answers

What does Doppler ultrasound evaluate through different structures?

Blood flow Signup and view all the answers

What is the function of a pulse generator in ultrasound imaging?

Producing the electrical pulses applied to the transducer Signup and view all the answers

How does continuous sound energy differ from pulsed sound energy in ultrasound?

Pulsed sound energy has a relatively long pause after each burst Signup and view all the answers

What is the main purpose of Doppler ultrasound in medical applications?

Evaluating blood flow through different structures Signup and view all the answers

Why does ultrasound rely on high-frequency sounds to image the body?

To produce longitudinal waves for imaging Signup and view all the answers

How does electronic processing help in creating a two-dimensional image in ultrasound imaging?

By processing the returning sounds from the target Signup and view all the answers

What property of a sound wave is determined by the rate at which tissue structures vibrate back and forth?

Frequency Signup and view all the answers

In ultrasound generation, what does the term 'pulse-echo technique' refer to?

Emitting only a few cycles of pulses at a time Signup and view all the answers

What does the wavelength of an ultrasound wave represent?

The distance a compression wave moves forward Signup and view all the answers

Which mode of ultrasound generation involves producing successive compressions and rarefactions through alternate current voltage?

Continuous Wave Mode Signup and view all the answers

How are tissue positioning and identification achieved in ultrasound imaging using the pulse-echo technique?

By detecting and analyzing pulse echoes Signup and view all the answers