18 Questions
What term is used to describe an area that contains echoes in an ultrasound image?
Echogenic
What is the principle behind the ultrasound transducer's ability to generate sound waves and detect echo signals?
Piezoelectric effect
What determines the brightness of the dots on the ultrasound screen?
Strength of the returning echoes
What is the purpose of the pulse-echo principle in ultrasound?
To detect and process returning echoes
What is the primary factor that determines the location of the dots in an ultrasound image?
Time travelled
What is the term for an area that contains no echoes in an ultrasound image?
Anechoic
What is the frequency range used in Obstetrics and Gynaecology ultrasound?
2.5-5 MHZ
What is the term for an area that contains only a few echoes in an ultrasound image?
Hypoechoic
What is the name of the display mode used in localization of foreign bodies in the eye?
A-MODE
What is the frequency range used in Echocardiography?
2-8 MHZ
What is the mechanism used to produce the ultrasound image?
Both A and B
What is the component responsible for storing the image as digits and pixels?
Image memory
What is the primary advantage of real-time imaging in ultrasound?
Accurate size and depth measurements
What is a limitation of ultrasound imaging?
All of the above
What is the primary principle of Doppler ultrasound?
Measuring blood flow velocity
What is the purpose of spectral Doppler?
To evaluate blood flow patterns
What is the primary advantage of color Doppler ultrasound?
Visualizing blood vessels
What is the primary method of recording and archiving ultrasound images?
Picture archiving and communication system (PACS)
Test your knowledge of ultrasound transducers, their working principles, and the pulse-echo principle. Learn about the conversion of acoustic energy to electrical signals and vice versa.
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