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Questions and Answers
What generates electrical potentials in the direct piezoelectric effect?
How are images created on the screen of an ultrasound machine?
Which characteristic describes sound according to the text?
What is the purpose of using a unique pattern of electric charges in ultrasound imaging?
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What happens when sound waves impact crystals in the context provided?
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How is echo utilized in creating images on ultrasound screens?
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Study Notes
Ultrasound Technology
- Sound waves are used to produce an image of internal organs, such as the liver or moving organs like the heart.
Pulse-Echo Technique
- The pulse-echo technique is used to form a grey scale image on the ultrasound screen.
- This technique involves sending sound waves and measuring the reflected sound waves (echo) to create the image.
Sound Waves
- Sound waves are emitted from a probe, also known as a pulse.
- The sound waves interact with tissues, generating electrical charges.
- The returning sound waves create a distinct pattern of electrical charges.
Creating the Ultrasound Image
- The unique pattern of electrical charges is used to create the image on the ultrasound screen.
- The image is formed by the echo, which is the returning sound waves that are converted into an image.
Characteristics of Sound
- Sound is described by its wavelength and frequency.
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Description
Test your knowledge on ultrasound imaging and sound waves. Learn about how sound waves are used in the pulse-echo technique to create grey scale images of organs, both stationary like the liver and moving like the heart.
