DAVIES SPI REVIEW QUESTIONS AND ANSWERS FULL SOLUTION STUDY GUIDE GRADED A+

DAVIES SPI REVIEW 2026 1704 QUESTIONS
AND ANSWERS FULL SOLUTION STUDY
GUIDE GRADED A+

⩥ "The concentration of energy in a sound beam" describes:
Answer: Intensity


⩥ What is the intensity formula?
Answer: intensity= power/beam area


⩥ Can the 3 bigness parameters be changed by the sonographer?
Answer: Yes


⩥ When amplitude is doubled, intensity is:
Answer: increased by a factor of 4


⩥ When amplitude is quartered, the intensity is:
Answer: Reduced by a factor of 16


⩥ "The length or distance of a single cycle" describes:
Answer: Wavelength

, ⩥ What is the wavelength formula:
Answer: Wavelength= prop speed/frequency


1.54/frequency


⩥ "The rate that sound travels through a medium" or "velocity or speed"
describes:
Answer: Propagation speed


⩥ What is the speed of sound in air?
Answer: 330 m/s


⩥ What is the speed of sound in soft tissue and blood?
Answer: 1,540 m/s


⩥ What is the speed of sound in bone?
Answer: 2,000-4,000 m/s


⩥ Bulk modulus is the same as:
Answer: Stiffness