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Questions and Answers
What is the term for sound waves below 20Hz?
What is the term for sound waves below 20Hz?
- Audible sound
- Supersonic
- Ultrasound
- Infrasound (correct)
What is the function of the transducer in ultrasound imaging?
What is the function of the transducer in ultrasound imaging?
- Generates high frequency sound waves
- Converts electrical energy into mechanical ultrasound waves (correct)
- Processes the returning echoes into electrical signals
- Produces audible sound waves
What physical characteristic do quartz crystals possess in ultrasound imaging?
What physical characteristic do quartz crystals possess in ultrasound imaging?
- They are used to generate ultrasonic pulses
- They produce infrasound waves
- They convert electrical energy into audible sound waves
- They change shape and vibrate when an electric current is applied (correct)
What is the speed range for audible sound?
What is the speed range for audible sound?
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What is the term for the medical imaging technique that uses high frequency sound waves and their echoes?
What is the term for the medical imaging technique that uses high frequency sound waves and their echoes?
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Study Notes
Ultrasound Imaging Basics
- Infrasound refers to sound waves with frequencies below 20Hz.
Transducer Function
- The transducer in ultrasound imaging converts electrical energy into sound waves and vice versa.
Quartz Crystal Properties
- Quartz crystals possess a unique physical characteristic called piezoelectricity, which allows them to generate an electric charge when subjected to mechanical stress.
Audible Sound Range
- The speed range for audible sound is between 20 Hz and 20,000 Hz.
Ultrasound Imaging Definition
- Ultrasound imaging, also known as sonography, is a medical imaging technique that uses high-frequency sound waves and their echoes to produce images of internal organs and structures.
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