SPI PRACTICE QUESTIONS
_________ is a redirection of US in many instructions due to a *difficult* boundary between
media - ANS-scattering
___________ resolution is decided via SPL - ANS-radial or axial
______________ is the gap included by means of one cycle - ANS-wavelength
______________ is the time to finish one cycle - ANS-period
A circular hyperechoic structure is placed at a intensity of five cm. The structure has abnormally
low attenuation and the speed inside the mass is 1,400 m/s. Which of the subsequent is most
possibly to appear beneath the shape? - ANS-reflectors beneath the structure appear
abnormally deep in the photo
A Doppler exam is done with a 5 MHz probe and a PRF of 15 kHz. Which of these Doppler
shifts will create aliasing? - ANS-14 kHz
A hydrophone is used to measure: - ANS-depth (or frequency)
A pulse is emitted through a transducer and is visiting in soft tissue. The move-go back-time, or
time-of-flight, of a sound pulse is 130 microseconds. What is the reflector depth? - ANS-10 cm
A fine guarantee program: - ANS-is needed by way of all labs
A shadow appears on an ultrasound test. Which of the subsequent statements is true about the
shadow artifact? - ANS-it seems as hypoechoic
A shadow appears on an ultrasound test. Which of the subsequent statements is real
approximately the shape right now above the shadowing artifact? - ANS-attenuation properties
are too excessive
A single element transducer is focused: - ANS-through the manufacturer
A sound beam is created through a unmarried, disc-shaped crystal. Which of those beams has
the shallowest recognition? - ANS-2 MHz, 9 mm diameter
A sound wave is touring within the frame and propagating from one shape of soft tissue to some
other. For instance, sound is shifting from muscle to blood. What percentage of the sound wave
is most probable to be meditated on the muscle-blood boundary? - ANS-.5%
A sound wave with a frequency of 5 MHz is travelling in smooth tissue. What is the wavelength?
- ANS-.Three mm
A sound wave's frequency is 10 MHz. The wave is travelling in smooth tissue. What is its
wavelength? - ANS-.15 mm
A system which isn't working well now does now not show clear photographs in the some
distance area. This may be a problem with: - ANS-transducer, receiver, reveal, or test converter
A transducer converts __________ from one form to every other - ANS-electricity
A transducer with multiple energetic detail is known as: - ANS-array
According to AIUM, there had been no showed bioeffects under intensities of ______ watts in
step with square centimeter SPTA - ANS-.01
Aliasing is an artifact discovered when performing Doppler ultrasonography. Which of the
subsequent indicators is maximum possibly to alias? - ANS-7 MHz with a PRF of three kHz
, All of the subsequent are limitations of analog scan converts EXCEPT: - ANS-low spatial
resolution
All of the following are commonly used to exchange the general brightness of an entire photo
EXCEPT: - ANS-reimbursement
All of the following are proper EXCEPT: - ANS-two waves with equal frequencies need to
interfere constructively
All of the following are actual EXCEPT: - ANS- waves with same frequencies should interfere
constructively
All of the following are proper of normal cavitation EXCEPT: - ANS-harmful bioeffects are
typically determined
All of the following are true regarding temporal decision EXCEPT: - ANS-reduced temporal
resolution is related to shorter pulse period
All of the following artifacts location the faulty mirrored image underneath the authentic reflector
EXCEPT: - ANS-aspect lobe
All of the subsequent describe dynamic variety EXCEPT: logarithmic, evaluation, relative,
absolute, ratio - ANS-absolute
All of the subsequent concerning the hemodynamics of a stenosis are real EXCEPT: -
ANS-strain is lowest downstream
All of the subsequent end result from the usage of backing fabric in a transducer EXCEPT: -
ANS-excessive sensitivity
All of the following statements concerning in-vitro bioeffects are actual EXCEPT: - ANS-in-vitro
bioeffects conclusions are clinically applicable
All of the subsequent will enhance temporal decision EXCEPT: - ANS-elevated line density
An photo is too dark. Which method is exceptional to correct this hassle? - ANS-increase
receiver gain
An man or woman is standing. The blood pressure generated by using the heart is 120 mmHg.
What is the hydrostatic pressure at the ankle? - ANS-a hundred mmHg
An ultrasound machine is imaging to a intensity of 10 cm. Which of the following might be
unique on a single photo at depths of 2 cm, 5 cm, and 10 cm? - ANS-lateral decision
An ultrasound device is working inside the harmonic mode. The photograph at the display of the
ultrasound machine became created the use of sound reflections with a frequency of 6 MHz.
What is the frequency of sound emitted by means of the system's transducer? - ANS-three MHz
An ultrasound gadget is set at zero dB and is transmitting at full depth. What is the output
electricity while the device is transmitting at 10% of full intensity? - ANS--10 dB
An ultrasound gadget is about at 0 dB and is transmitting at complete intensity. What is the
output energy while the system is transmitting at 50% of full depth? - ANS--3 dB
An ultrasound device's display is just too shiny. Which of the following strategies is satisfactory
to accurate this hassle? - ANS-decrease output electricity
An US device has a digital scan converter, but has an analog input signal. The device desires to
have a: - ANS-analog to digital converter
An US wave travels thru two media and has attenuation of three dB in the first and five dB in the
2nd. What is the overall attenuation? - ANS-8 dB
As a end result of ______________, the propagation pace increases - ANS-reducing
compressibility and density
_________ is a redirection of US in many instructions due to a *difficult* boundary between
media - ANS-scattering
___________ resolution is decided via SPL - ANS-radial or axial
______________ is the gap included by means of one cycle - ANS-wavelength
______________ is the time to finish one cycle - ANS-period
A circular hyperechoic structure is placed at a intensity of five cm. The structure has abnormally
low attenuation and the speed inside the mass is 1,400 m/s. Which of the subsequent is most
possibly to appear beneath the shape? - ANS-reflectors beneath the structure appear
abnormally deep in the photo
A Doppler exam is done with a 5 MHz probe and a PRF of 15 kHz. Which of these Doppler
shifts will create aliasing? - ANS-14 kHz
A hydrophone is used to measure: - ANS-depth (or frequency)
A pulse is emitted through a transducer and is visiting in soft tissue. The move-go back-time, or
time-of-flight, of a sound pulse is 130 microseconds. What is the reflector depth? - ANS-10 cm
A fine guarantee program: - ANS-is needed by way of all labs
A shadow appears on an ultrasound test. Which of the subsequent statements is true about the
shadow artifact? - ANS-it seems as hypoechoic
A shadow appears on an ultrasound test. Which of the subsequent statements is real
approximately the shape right now above the shadowing artifact? - ANS-attenuation properties
are too excessive
A single element transducer is focused: - ANS-through the manufacturer
A sound beam is created through a unmarried, disc-shaped crystal. Which of those beams has
the shallowest recognition? - ANS-2 MHz, 9 mm diameter
A sound wave is touring within the frame and propagating from one shape of soft tissue to some
other. For instance, sound is shifting from muscle to blood. What percentage of the sound wave
is most probable to be meditated on the muscle-blood boundary? - ANS-.5%
A sound wave with a frequency of 5 MHz is travelling in smooth tissue. What is the wavelength?
- ANS-.Three mm
A sound wave's frequency is 10 MHz. The wave is travelling in smooth tissue. What is its
wavelength? - ANS-.15 mm
A system which isn't working well now does now not show clear photographs in the some
distance area. This may be a problem with: - ANS-transducer, receiver, reveal, or test converter
A transducer converts __________ from one form to every other - ANS-electricity
A transducer with multiple energetic detail is known as: - ANS-array
According to AIUM, there had been no showed bioeffects under intensities of ______ watts in
step with square centimeter SPTA - ANS-.01
Aliasing is an artifact discovered when performing Doppler ultrasonography. Which of the
subsequent indicators is maximum possibly to alias? - ANS-7 MHz with a PRF of three kHz
, All of the subsequent are limitations of analog scan converts EXCEPT: - ANS-low spatial
resolution
All of the following are commonly used to exchange the general brightness of an entire photo
EXCEPT: - ANS-reimbursement
All of the following are proper EXCEPT: - ANS-two waves with equal frequencies need to
interfere constructively
All of the following are actual EXCEPT: - ANS- waves with same frequencies should interfere
constructively
All of the following are proper of normal cavitation EXCEPT: - ANS-harmful bioeffects are
typically determined
All of the following are true regarding temporal decision EXCEPT: - ANS-reduced temporal
resolution is related to shorter pulse period
All of the following artifacts location the faulty mirrored image underneath the authentic reflector
EXCEPT: - ANS-aspect lobe
All of the subsequent describe dynamic variety EXCEPT: logarithmic, evaluation, relative,
absolute, ratio - ANS-absolute
All of the subsequent concerning the hemodynamics of a stenosis are real EXCEPT: -
ANS-strain is lowest downstream
All of the subsequent end result from the usage of backing fabric in a transducer EXCEPT: -
ANS-excessive sensitivity
All of the following statements concerning in-vitro bioeffects are actual EXCEPT: - ANS-in-vitro
bioeffects conclusions are clinically applicable
All of the subsequent will enhance temporal decision EXCEPT: - ANS-elevated line density
An photo is too dark. Which method is exceptional to correct this hassle? - ANS-increase
receiver gain
An man or woman is standing. The blood pressure generated by using the heart is 120 mmHg.
What is the hydrostatic pressure at the ankle? - ANS-a hundred mmHg
An ultrasound machine is imaging to a intensity of 10 cm. Which of the following might be
unique on a single photo at depths of 2 cm, 5 cm, and 10 cm? - ANS-lateral decision
An ultrasound device is working inside the harmonic mode. The photograph at the display of the
ultrasound machine became created the use of sound reflections with a frequency of 6 MHz.
What is the frequency of sound emitted by means of the system's transducer? - ANS-three MHz
An ultrasound gadget is set at zero dB and is transmitting at full depth. What is the output
electricity while the device is transmitting at 10% of full intensity? - ANS--10 dB
An ultrasound gadget is about at 0 dB and is transmitting at complete intensity. What is the
output energy while the system is transmitting at 50% of full depth? - ANS--3 dB
An ultrasound device's display is just too shiny. Which of the following strategies is satisfactory
to accurate this hassle? - ANS-decrease output electricity
An US device has a digital scan converter, but has an analog input signal. The device desires to
have a: - ANS-analog to digital converter
An US wave travels thru two media and has attenuation of three dB in the first and five dB in the
2nd. What is the overall attenuation? - ANS-8 dB
As a end result of ______________, the propagation pace increases - ANS-reducing
compressibility and density
