SPI Practice Test
A 1.5D transducer has what capacity?
A. Electronically recognition in the elevational aircraft
b. Produce a three-D photo
c. Dynamic aperature
d. Color Doppler imaging - ANS-a.
A lower in power or depth by using a component of 2 represents a exchange of
a. -three dB
b. -50 dB
c. -6 dB
d. 3 B - ANS-a.
A decrease inside the thickness of a piezoelectric element will bring about
a. A more pulse period
b. An growth in the propagation speed
c. A lower in the satisfactory issue if the bandwidth decreases
d. An growth within the frequency of the transducer - ANS-d.
A longitudinal wave is characterized by way of _____________.
A. The ability of the sound wave to penetrate 5 cm of tissue
b. Frequency of vibration more than 1 MHz
c. Acoustic velocity equals 1,540 m/s
d. Particle motion in equal route as the route of wave propagation - ANS-d.
A slice-thickness phantom measures which plane of the transducer?
A. The scanning aircraft
b. The elevation aircraft
c. The azimuthal plane
d. The temporal aircraft - ANS-b.
A small (relative to the wavelength) reflector is stated to ______________ an incident sound
beam
a. Consciousness
b. Speculate
c. Scatter
d. Expand - ANS-c.
A video display that is limited to handiest black and white, with out a different shades of gray, is
called _____________.
,A. Binary
b. Monochrome
c. Bistable
d. Unichrome - ANS-c.
Acoustic artifacts encompass
a. Images of reflectors in an inappropriate position
b. Image of reflectors of incorrect brightness
c. Images that don't correspond to anatomical systems
d. All of the above - ANS-d.
ALARA stands for
a. As low as moderately practicable
b. As lengthy as reasonably proper
c. As little as reasonably allowable
d. As lengthy as reasonably a possibility - ANS-a.
An boom in the diameter of a transducer outcomes in a(n) ______________ of the close to
sector duration
a. Growth
b. Lower
c. No alternate - ANS-a.
An unfocused, unmarried-element disc transducer this is 13mm in diameter has a diameter on
the focal quarter of:
a. 13 mm
b. 6.5 mm
c. 26 mm
d. Can't be decided - ANS-b.
As frequency is improved:
a. A 3-cycle ultrasound pulse decreases in length
b. Wavelength will increase
c. Attenuation decreases
d. Propagation speed will increase - ANS-a.
As the frequency of sound increases,
a. The amount of scatter is extended
b. The attenuation decreases
c. The quantity of scatter decreases
d. The penetration increases - ANS-a.
Assuming a fixed frequency, what happens if the diameter of an unfocused transducer is
extended?
, A. The a ways zone divergence will increase
b. The penetration decreases
c. The duration of the near region increases
d. The duration of the close to region decreases - ANS-c.
At what factor do the amplitudes get assigned grey scale numbers so that they can be located
into memory?
A. Pre-processing of the sign
b. Post-processing of the sign
c. In the pc memory
d. In the receiver - ANS-a.
Attenuation along a legitimate path is a lower in:
a. Frequency
b. Amplitude
c. Wavelength
d. Propagation pace - ANS-b.
Avoiding a nearby temperature growth exceeding ___________ ought to make certain there
aren't any thermally triggered biological outcomes
a. 2 degrees celsius
b. Four stages celsius
c. 10 levels celsius
d. Ninety five degrees farenheight - ANS-a.
Axial decision is stricken by all of the following EXCEPT
a. Frequency
b. Damping
c. Spatial pulse duration
d. Focusing - ANS-d.
Continuous Wave instrumentation is utilized in
a. All ultrasound imaging instruments
b. Only colour Doppler instruments
c. All Doppler devices
d. Some Doppler devices - ANS-d.
Damping in a transducer
a. Reduces the wide variety of cycles in a pulse and increases the great component
b. Will increase the variety of cycles in a pulse and increases penetration
c. Reasons negative axial and lateral resolution
d. Reduces the duty component and will increase the range of transmitted frequencies - ANS-d.
Diagnostic ultrasound frequency range is:
A 1.5D transducer has what capacity?
A. Electronically recognition in the elevational aircraft
b. Produce a three-D photo
c. Dynamic aperature
d. Color Doppler imaging - ANS-a.
A lower in power or depth by using a component of 2 represents a exchange of
a. -three dB
b. -50 dB
c. -6 dB
d. 3 B - ANS-a.
A decrease inside the thickness of a piezoelectric element will bring about
a. A more pulse period
b. An growth in the propagation speed
c. A lower in the satisfactory issue if the bandwidth decreases
d. An growth within the frequency of the transducer - ANS-d.
A longitudinal wave is characterized by way of _____________.
A. The ability of the sound wave to penetrate 5 cm of tissue
b. Frequency of vibration more than 1 MHz
c. Acoustic velocity equals 1,540 m/s
d. Particle motion in equal route as the route of wave propagation - ANS-d.
A slice-thickness phantom measures which plane of the transducer?
A. The scanning aircraft
b. The elevation aircraft
c. The azimuthal plane
d. The temporal aircraft - ANS-b.
A small (relative to the wavelength) reflector is stated to ______________ an incident sound
beam
a. Consciousness
b. Speculate
c. Scatter
d. Expand - ANS-c.
A video display that is limited to handiest black and white, with out a different shades of gray, is
called _____________.
,A. Binary
b. Monochrome
c. Bistable
d. Unichrome - ANS-c.
Acoustic artifacts encompass
a. Images of reflectors in an inappropriate position
b. Image of reflectors of incorrect brightness
c. Images that don't correspond to anatomical systems
d. All of the above - ANS-d.
ALARA stands for
a. As low as moderately practicable
b. As lengthy as reasonably proper
c. As little as reasonably allowable
d. As lengthy as reasonably a possibility - ANS-a.
An boom in the diameter of a transducer outcomes in a(n) ______________ of the close to
sector duration
a. Growth
b. Lower
c. No alternate - ANS-a.
An unfocused, unmarried-element disc transducer this is 13mm in diameter has a diameter on
the focal quarter of:
a. 13 mm
b. 6.5 mm
c. 26 mm
d. Can't be decided - ANS-b.
As frequency is improved:
a. A 3-cycle ultrasound pulse decreases in length
b. Wavelength will increase
c. Attenuation decreases
d. Propagation speed will increase - ANS-a.
As the frequency of sound increases,
a. The amount of scatter is extended
b. The attenuation decreases
c. The quantity of scatter decreases
d. The penetration increases - ANS-a.
Assuming a fixed frequency, what happens if the diameter of an unfocused transducer is
extended?
, A. The a ways zone divergence will increase
b. The penetration decreases
c. The duration of the near region increases
d. The duration of the close to region decreases - ANS-c.
At what factor do the amplitudes get assigned grey scale numbers so that they can be located
into memory?
A. Pre-processing of the sign
b. Post-processing of the sign
c. In the pc memory
d. In the receiver - ANS-a.
Attenuation along a legitimate path is a lower in:
a. Frequency
b. Amplitude
c. Wavelength
d. Propagation pace - ANS-b.
Avoiding a nearby temperature growth exceeding ___________ ought to make certain there
aren't any thermally triggered biological outcomes
a. 2 degrees celsius
b. Four stages celsius
c. 10 levels celsius
d. Ninety five degrees farenheight - ANS-a.
Axial decision is stricken by all of the following EXCEPT
a. Frequency
b. Damping
c. Spatial pulse duration
d. Focusing - ANS-d.
Continuous Wave instrumentation is utilized in
a. All ultrasound imaging instruments
b. Only colour Doppler instruments
c. All Doppler devices
d. Some Doppler devices - ANS-d.
Damping in a transducer
a. Reduces the wide variety of cycles in a pulse and increases the great component
b. Will increase the variety of cycles in a pulse and increases penetration
c. Reasons negative axial and lateral resolution
d. Reduces the duty component and will increase the range of transmitted frequencies - ANS-d.
Diagnostic ultrasound frequency range is:
