ARDMS Ultrasound Physics & Instrumentation Practice Exam With Guaranteed Accurate Answers

Which of the following is defined as only the active time? - correct answer Pulse duration The inertia of the medium describes its: - correct answer Density Which of the following is determined by the sound source only? - correct answer Frequency The prefix "centi" denotes: - correct answer Hundredths If the angle of incidence is 40°, what is the angle of transmission at the interface if medium 1 has a propagation speed of 1320 m/s and medium 2 has a propagation speed of 1700 m/s? - correct answer >40° The change in the direction of the original sound wave that occurs when sound interacts with two different tissue types that have a different propagation speed is referred to as: - correct answer Refraction Refraction is the change in direction of the transmitted sound beam that occurs with oblique incidence and dissimilar propagation speeds. Which of the following is an appropriate unit of measurement for propagation speed? - correct answer millimeters per microsecond (mm/μs) The major component of attenuation is: - correct answer Pulse repetition frequency In clinical imaging, the wavelength measures between: - correct answer 0.1 to 0.8 mm The duty factor for continuous wave ultrasound is: - correct answer 100% All o