MULTIPLE CHOICE (1LQ)
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9 Terms
2 MHz to 15 MHz
What is the typical frequency range used in diagnostic medical ultrasound?
Longitudinal mechanical wave
What type of wave is an ultrasound wave?
Density and stiffness of the medium
What is the main factor that determines the speed of sound in a medium?
2500 m/s
What is the average speed of sound in soft tissue?
Frequency
Which property of a sound wave determines its ability to resolve structures that are close together?
Wavelength decreases
What happens to the wavelength of sound as its frequency increases?
Piezoelectric effect
The process of converting electrical energy into sound waves and vice versa in an ultrasound transducer is called:
Attenuation
Which of the following describes the reduction in amplitude and intensity of the ultrasound wave as it travels through tissue?
Decibels per centimeter (dB/cm)
What is the unit commonly used to measure attenuation in ultrasound?
Note 
Flashcards (85)