Spi Review Practice Test Study Guide Graded A+

While evaluating the liver vasculature with color Doppler, you are unable to obtain signals from the deeper vessels. What should you do to enhance your ability to demonstrate deep flow? a) Decrease the packet size b) Increase the scan line density c) Increase the wall filter d) Increase the pulse repetition frequency e) Decrease the ultrasound frequency {Ans: e) Decrease the ultrasound frequency}The mass you are imaging has a diameter of 35 mm. This value can also be expressed as: a) 350 cm b) 0.35 cm c) 3.5 cm d) 35 m e) 3.5 m {Ans: c) 3.5 cm}The propagation speed for sound is lowest in which of the following biological tissues? a) Fat b) Blood c) Muscle d) Bone e) Liver {Ans: a) Fat}What does the Doppler signal spectral display depict? a) Relative signal power at each frequency in the Doppler signal b) Depth to each vessel c) Volume flow rate d) Frequency bandwidth e) Acoustic power {Ans: a) Relative signal power at each frequency in the Doppler signal}The range equation describes the relationship between: a) Acoustic impedance of two media b) Side lobe intensity between two crystals c) Round-trip pulse travel time and distance