CHAPTER 14
QUIZ ANSWERS:
1. d) Bandwidth
2. c) Ultrasound travels with the same speed in tissues, muscles, and bones
3. b) Directly over the muscle
PROBLEMS ANSWERS:
1. Approximately 60% of the power (i.e., 2.4 W) is reflected back from the fat-bone
interface.
2. Approximately 65% of the power (i.e. 1.3 W) is reflected from the muscle-bone
interface. Pressure is measured in N/m2, while intensity is measured in W/m2. The
formula for conversion is 1 N/m2 = 0.0025 W/m2.