Unit 1 Intro to Diagnostic Ultrosound

What is the frequency range of audible sound?

• 16Hz - 20kHz

• >20kHz

• 10Hz - 15kHz

• 20kHz - 25kHz

What is the purpose of the transducer in diagnostic ultrasound?

• To produce ultrasound waves

• To absorb sound waves

• To reflect sound waves

• To amplify sound waves

What happens to ultrasound waves at boundaries between different materials?

• They are absorbed

• They are reflected

• They are transmitted

• All of the above

What is the Doppler Effect in ultrasound?

• Change in frequency due to motion

• Change in amplitude due to distance

• Change in wavelength due to pressure

• Change in speed due to temperature

What is the effect of attenuation in ultrasound?

• Loss of strength of ultrasound wave

• Increase in frequency of ultrasound wave

• No effect on ultrasound wave

• Increase in amplitude of ultrasound wave

What is the main use of Doppler ultrasound?

• To measure blood flow

• To create 3D images

• To analyze tissue density

• To monitor temperature

What is the main function of the ultrasound receiver?

• To detect high frequency ultrasound waves

• To transmit ultrasound waves

• To amplify sound waves

• To convert sound to electrical energy

Types of Diagnostic Ultrasound used in Medical Application

• Electrocardiograph

• Cardiotocography

• Photoplethysmograph

• Electromyograph

Ultrasound transducer are made

of _ _

Diagnostic Ultrasound can be used in ...

• cardiology

• sound navigation ranging (SONAR)

• aviation

• all of above