Davies Physics SPI EXAM QUESTIONS

Davies Physics SPI EXAM QUESTIONS AND ANSWERS 100% SOLVED (Newest 2025)

• What can you do to enhance the visibility of a specular

reflector?

• Scan w/ the lowest possible frequency
• Scan w/ oblique incidence
• Scan w/ perpendicular incidence
• Increase distance to the reflector
• Scan w/ an incident angle of 45 degrees - Correct

Answers ✅C) Increase distance to the reflector

• Acoustic impedance increases w/ which of the following?
• Increased tissue density
• Increased propagation speed
• Increased transducer frequency
• A & B
• All the above - Correct Answers ✅D) A & B
• Increased tissue density
• Increased propagation speed
• While performing a Doppler U/S examination, you adjust the

pulse repetition frequency to 12 kHz. This can also be

expressed as: 1 / 3

Davies Physics SPI EXAM QUESTIONS AND ANSWERS 100% SOLVED (Newest 2025)

• 0.12 Hz
• 1200 Hz
• 1.2 Hz
• 12,000 Hz
• 120 MHz - Correct Answers ✅D) 12,000 Hz
• You are imaging a rounded mass w/ irregular borders. The

mass has a much slower propagation speed than surrounding tissue. What sound-tissue interaction will be encountered as the U/S propagates through this interface?

• Refraction
• Reflection
• Absorption
• Scattering
• All the above - Correct Answers ✅E) All the above
• Refraction
• Reflection
• Absorption
• Scattering 2 / 3

Davies Physics SPI EXAM QUESTIONS AND ANSWERS 100% SOLVED (Newest 2025)

• As a general observation about media in diagnostic

sonography, sound propagates faster in materials w/ greater:

• Compressibility
• Acoustic Impedance

C)Stiffness

• Refractive Index
• All the above - Correct Answers ✅C) Stiffness
• Which of the following terms denotes the time it takes for

one cycle to occur?

• Frequency
• Amplitude
• Wavelength
• Period
• Pressure - Correct Answers ✅D) Period
• Which of the following would increase the spatial pulse

length?

• Increased PRF
• Decreased # of transmit pulses per frame
• / 3