Define acoustic enhancement Define acoustic shadowing Define anechoic Describe a sound wave. Describe how an ultrasound signal is generated. Doppler ultrasound How are wavelength (λ), velocity (v), and frequency (f) related? How is an ultrasound image created? In ultrasound, does increasing the transducer frequency increase or decrease the depth of penetration of the pulses? In ultrasound, does increasing the transducer frequency increase or decrease the resolution? In ultrasound, what is the function of time-controlled gain? Is the acoustic impedance of air greater than or less than that of water? Is the speed of ultrasound in air greater than or less than its speed in tissue? What are A, B, and M modes? What is acoustic impedance? What is attenuation? What is spatial resolution? What is the definition of the frequency of a sound wave? What is the definition of the velocity of a sound wave? What is the definition of the wavelength of a sound wave? What is the effect of motion on spatial resolution? What is the primary difference between ultrasound imaging and other imaging? What is the range of frequencies employed in transthoracic ultrasound? What is ultrasound? What limits our ability to image vessels with ultrasound? Book traversal links for Ultrasound ‹ Why are grids used? Up Define acoustic enhancement ›