Ultrasound Physics - Mock Exam
Questions for SPI 2025/2026 Exam All
Answers and Illustrations Given
Which of the following transducers will have the worst axial resolution?
a. Vector array, 3 MHz
b. Linear Sequential Array, 6 MHZ
c. Linear Phased Array 7.5 MHZ
d. Annular Array, 6 MHz - 🧠 ANSWER ✔✔Vector array, 3 MHz
A sound wave is traveling in the body and propagates from muscle to air.
What percentage of the sound wave is most likely reflected at the muscle-
air boundary?
a. 0.5%
b. 75%
,c. 25%
d. 5%
e. 99% - 🧠 ANSWER ✔✔75%
Which of the following lists is in decreasing order?
a. mega, kilo, deca, milli, nano
b. centi, mill, kilo, mega, nano
c. micro, milli, deci, kilo, mega
d. micro, kilo, mega, deci, milli
e. mega, micro, deci, milli, hecto - 🧠 ANSWER ✔✔mega, kilo, deca, milk,
nano
During a diagnostic exam, which of these statements is most correct when
describing the pulsed echo characteristics of an ultrasound system.
a. The listening time may be one-thousand times longer than the pulse
duration.
b. the pulse duration is longer than the pulse repetition period.
c. The pulse duration is similar to the listening time.
d. The duty factor has a value close to 1
,e. The pulse repitition period is similar to the period. - 🧠 ANSWER ✔✔The
listening time may be one-thousand times longer than the pulse duration.
Which of the following parameters is determined by both the ultrasound
system and the medium through which the sound travels?
a. period
b. frequency
c. temperature
d. wavelength
e. velocity of the sound - 🧠 ANSWER ✔✔wavelength
You should be familiar with the formula L= C/F.
What does "C" stand for in this equation?
a. characteristic impedence
b. density
c. compliance
d. compressability
e. propagation speed - 🧠 ANSWER ✔✔propagation speed
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
, Which of the following lists is in increasing order?
a. mega, kilo, milli, nano, centi
b. centi, milli, kilo, mega, nano
c. micro, kilo, milli, deci, mega
d. micro, milli, deci, kilo, mega
e. mega, micro, deci, mill, hecto - 🧠 ANSWER ✔✔micro, milli, deci, kilo,
mega
Which of the following statements about speed and attenuation are true?
a. Attenuation through and propagation speed in a particular medium are
unrelated to each other.
b. When a sound beam travels faster in a medium, the attenuation is less.
c. When a sound beam travels slower in a medium, the attenuation is more.
- 🧠 ANSWER ✔✔Attenuation through and propagation speed in a particular
medium are unrelated to each other.
A sonographer is scanning a patient with a 3 MHz probe and replaces it
with a 6 MHz probe. All of the following statements are FALSE, except:
Questions for SPI 2025/2026 Exam All
Answers and Illustrations Given
Which of the following transducers will have the worst axial resolution?
a. Vector array, 3 MHz
b. Linear Sequential Array, 6 MHZ
c. Linear Phased Array 7.5 MHZ
d. Annular Array, 6 MHz - 🧠 ANSWER ✔✔Vector array, 3 MHz
A sound wave is traveling in the body and propagates from muscle to air.
What percentage of the sound wave is most likely reflected at the muscle-
air boundary?
a. 0.5%
b. 75%
,c. 25%
d. 5%
e. 99% - 🧠 ANSWER ✔✔75%
Which of the following lists is in decreasing order?
a. mega, kilo, deca, milli, nano
b. centi, mill, kilo, mega, nano
c. micro, milli, deci, kilo, mega
d. micro, kilo, mega, deci, milli
e. mega, micro, deci, milli, hecto - 🧠 ANSWER ✔✔mega, kilo, deca, milk,
nano
During a diagnostic exam, which of these statements is most correct when
describing the pulsed echo characteristics of an ultrasound system.
a. The listening time may be one-thousand times longer than the pulse
duration.
b. the pulse duration is longer than the pulse repetition period.
c. The pulse duration is similar to the listening time.
d. The duty factor has a value close to 1
,e. The pulse repitition period is similar to the period. - 🧠 ANSWER ✔✔The
listening time may be one-thousand times longer than the pulse duration.
Which of the following parameters is determined by both the ultrasound
system and the medium through which the sound travels?
a. period
b. frequency
c. temperature
d. wavelength
e. velocity of the sound - 🧠 ANSWER ✔✔wavelength
You should be familiar with the formula L= C/F.
What does "C" stand for in this equation?
a. characteristic impedence
b. density
c. compliance
d. compressability
e. propagation speed - 🧠 ANSWER ✔✔propagation speed
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
, Which of the following lists is in increasing order?
a. mega, kilo, milli, nano, centi
b. centi, milli, kilo, mega, nano
c. micro, kilo, milli, deci, mega
d. micro, milli, deci, kilo, mega
e. mega, micro, deci, mill, hecto - 🧠 ANSWER ✔✔micro, milli, deci, kilo,
mega
Which of the following statements about speed and attenuation are true?
a. Attenuation through and propagation speed in a particular medium are
unrelated to each other.
b. When a sound beam travels faster in a medium, the attenuation is less.
c. When a sound beam travels slower in a medium, the attenuation is more.
- 🧠 ANSWER ✔✔Attenuation through and propagation speed in a particular
medium are unrelated to each other.
A sonographer is scanning a patient with a 3 MHz probe and replaces it
with a 6 MHz probe. All of the following statements are FALSE, except:
