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General Ultrasonography: Physics Principles & Instrumentation

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General Ultrasonography: Physics Principles & Instrumentation

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Questions and Answers

What is the primary function of the transducer in an ultrasound system?

To display the ultrasound images

To amplify the received signals

To filter the received signals

To generate the ultrasound waves (correct)

What is the main purpose of the coupling gel used in ultrasound imaging?

To enhance the image resolution

To increase the power of the ultrasound waves

To reduce the air gap between the transducer and the skin (correct)

To protect the transducer from damage

Which of the following factors DOES NOT affect the propagation of ultrasound waves in tissue?

Tissue density

Tissue temperature

Tissue elasticity

Tissue viscosity (correct)

What is the main principle behind the Doppler effect in ultrasound imaging?

The change in frequency of the reflected waves due to the motion of the target Signup and view all the answers

Which of the following is NOT a common artifact in ultrasound imaging?

Mirroring Signup and view all the answers

What is the primary mechanism by which ultrasound waves are produced in a transducer?

Piezoelectric effect Signup and view all the answers

What is the purpose of the damping material in an ultrasound transducer?

To prevent ringing and improve spatial resolution Signup and view all the answers

Which property of tissue primarily determines the attenuation of ultrasound waves?

Scattering coefficient Signup and view all the answers

What is the purpose of the time-gain compensation (TGC) in an ultrasound system?

To compensate for the attenuation of the ultrasound signal with depth Signup and view all the answers

What is the primary advantage of using higher frequencies in ultrasound imaging?

Improved spatial resolution Signup and view all the answers