SPI version D

100問 • 1年前

Karla Alvarez

通報

問題一覧

which of the following transducers would be preferred for breast imaging

C) 12 MHz linear array

which of the following console controls allows for comparison of imaging of two different locations at the same time

A) dual screen

Which of the following describes a multi dimensional array?

D) has thousands of elements arranged in a matrix pattern

Materials used for the matching layer of a transducer must have an impedance between impedance levels of

A) skin and PE element

which of the following terms can be used to describe the waveform displayed

A) low resistance

The grayscale map is adjusted to a new map just after freezing the image this is an example of

C) applying postprocessing

Spatial compounding

A) can decrease the appearance of useful artifacts, such as enhancement and shadowing

What Doppler artifact is demonstrated on the tracing?

D) cross talk

reducing the size of the field of view improves ____ resolution

D) temporal

how many shades of grey will a 6 bit system display?

C) 64

A _____ is an audible sign of turbulence in a vessel. A _____ is an audible sign of turbulence in the heart

D) bruit, murmur

which of The following will cause an object to be displayed in an improper location or at an incorrect size

B) refraction

increasing overall gain will

B) increase the amplitude of all the reflectors on the image

____ is used to improve the signal-to-noise ratio on color, Doppler image and is defined as the averaging of previous image frames to produce the newest frame

C) persistence

an ultrasound beam with a transmitted frequency of 5 MHz moves through a soft tissue. Doppler ultrasound is used to evaluate a blood vessel a red blood cell is moving perpendicular to the beam at a speed of 15 m/s what will be the recorded Doppler shift?

D) 0 MHz

which of the following information should never be entered into the ultrasound system as a patient identifier prior to start the exam

A) social security number

which of the following transducers reproduce the highest frequency sound waves?

A) 2mm element thickness, 6mm/us prop speed of the element

what imaging phenomenon is demonstrated on the video

A) spontaneous contrast

as you were scanning an obese adult patient you noticed a 0.7 thermal index or should you do next?

A) continue scanning and complete the full exam effectively to reduce exposure time

increasing the image size will increase the number of pixels in the real time image indicates

C) write magnification

amplification of the received signal occurs in the

B) beam former

The __ the pulse packet used in color Doppler, the better the flow sensitivity

B) larger

which of the following is an advantage of the new Capacitive Micromachine ultrasonic transducers compared to traditional transducer arrays

D) a wider bandwidth and improved detail resolution

use your cursor to measure the peak systolic velocity of the third wave form

blue dot ( peak = top )

The first step in any contrast exam is

A) optimize the 2D image

which of the following acoustic artifacts is demonstrated on the image?

B) mirror image

scatter is defined as

C) redirection of sound beam in several directions away from the transducer

which of the following factors affect the focal length of the transducer?

C) element diameter and frequency

what system component is responsible for 3-D image acquisition and presentation

C) image processor

If the incident beam angle is 25° what is the angle of reflection

A) 25°

as frequency increases the amount of scatter ____

A) increases

A linear transducer providing a trapezoidal image demonstrates degraded ____ resolution in the far field of the image

B) lateral

Frame rates can be improved by the use of what signal processing technique

B) parallel processing

Linear phased arrays utilize what type of focusing

D) mechanical and electronic

____ is an increase in the strength of returning echoes caused by intervening structures of low attenuation

D) enhancement

Harmonic imaging leads to

C) decreased image clutter

if you set the gain to the lowest level and slowly increase it until an echo is identified on the image. What are you evaluating on the ultrasound system?

C) minimum sensitivity

which of the following terms can be used to describe the attached Doppler tracing

D) spectral broadening

which of the following transducer provides the best spatial resolution of the cardiac structures

D) transesophageal array

which of the following system controls is used mainly in cardiac imaging to correct for dropout on the sides of the image

C) lateral gain

The amount of compensation necessary for different echoes varies with reflector

C) depth

what adjustments can be made to improve the attached image of the Doppler tracing to make it of diagnostic quality

A) lower the baseline

If 60% of the beam is transmitted what percent is reflected to the transducer

B) 40%

if media one has an impedance of 65 rayls media two also has an impedance of 65 rayls what percent of the beam will be reflected at their interface?

C) 0%

A Doppler shift of 1.5 kHz is detected in an artery. if the velocity of the blood flow doubles, what is the new Doppler shift detected?

C) 3kHz

which statement is true regarding the Q factor

D) better axial resolution is seen with shorter spatial pulse lengths and low Q factor

note the Doppler measurement on the image what other Doppler measurement should be taken to calculate the resistive index?

D) end diastolic velocity

if the stenosis or blockage reduces the vessel lumen to 1/4 of the normal vessel area at the velocity of flow at the stenosis must ___ to maintain the flow rate

A) quadruple

____ refers to the process of steering the scan lines in multiple views to evaluate tissues with several pulses with varied incident angles

D) spatial compounding

which of the following beam intensity values is used to assess potential patient exposure

C) SPTA

which of the following is a variable necessary to quantify the Doppler shift

B) transducer frequency

increasing the spectral Doppler sample size will increase the ____

A) spectral broadening

if a renal artery, Doppler exam demonstrates normal flow, but stenosis is identified on angiography valuation the ultrasound results are described as

B) false negative

when using a tissue phantom to evaluate range accuracy, what unit will be used to report the measurement

D) centimeter

which of the following is directly related to the peak Doppler shift?

B) transducer frequency

What is the proper procedure for removing soiled gloves?

D) pull the outer cuff of the first glove toward the fingers while turning it inside out. place the remove glove in the contralateral gloved hand and pull the outer cuff of the second glove toward the fingers while turning it inside out and enclosing the first glove

The term used to describe the thickness of blood is

B) viscosity

blood is moving toward a 7 MHz transducer you expect the reflected frequency to be ____ 7 Mhz

A) greater than

if you are performing an abdominal exam but inadvertently select the carotid preset on the machine how will this affect your exam?

B) depth will be very superficial causing potential non-visualizations of abdominal structures

which of the following requires healthcare providers and organizations to develop and follow procedures that ensure the confidentiality and security of protected health information

D) health insurance portability an accountability act

when the sonographer decreases the imaging depth the ____

B) PRF will increase

The AIUM recommends that the thermal index for fetal imaging be maintained at a level at or below

D) 0.7

range resolution of a pulse wave system is determined by

D) both the source and medium

if the reflector is moving away from the stationary sound source the reflected wave will

B) have a lower frequency than the transmitted frequency

Which of the following techniques is described as a graphic representation of the motion of a structure over time?

D) M-mode

which of the following is a function of the pulser used to increase the signal-to-noise ratio

C) coded excitation

which of the following is true regarding signal-to-noise ratio

D) a high signal-to-noise ratio image is preferred over a low signal-to-noise ratio image

Range Equation: distance to reflector =

A) propagation speed x 1/2 (time to and from reflector)

which of the following parameters is displayed as the X- axis on a doppler tracing

B) time

which of the following is an advantage of virtual beam forming ( VBF) over traditional pulse echo imaging (PEI)

A) VBF allows for simultaneously real time grayscale, color, and spectral display

____ Determines the acoustic power of the transducer

A) the magnitude of the voltage spike

volume averaging artifact is greatest in

C) deep lesions

Which of the following will increase the amount of color displayed in a vessel located deep in the body?

D) increase frame rate

The arrow indicates what ultrasound phenomenon

A) clutter

no flow is detected while performing a color Doppler evaluation of a normal patent vein what will improve the color display?

D) decrease the sample size

When transmural pressure in a vein is high

D) the vein becomes enlarged and rounded

which of the following is related to the elevated peak rarefactional pressure in a sound beam

C) cavitation

What portion of the TGC curve is the deepest region attenuation compensation can occur

C) knee

what is a twinkle artifact?

B) mosaic colors displayed in a linear pattern and posterior to a dense object such as a renal stone

when estimating hydrostatic pressure every inch of blood in a column equates to

D) 2 mmHg

which of the following is necessary machine setting when performing a contrast elevation of the heart

A) low mechanical index value

Which of the following statements is true regarding equipment preparation for beginning in an ultrasound exam

A) adjust the height of the chair to allow your wrist to be fully extended while scanning

which Image demonstrates ring down artifact

which of the following will reduce the amount of color Doppler information displayed on the image

C) increased sample size

when evaluating a suspected arterial stenosis, a Doppler angle of ____ degrees will produce the most accurate flow velocity

A) 0

which of the following correctly describes a CW Doppler evaluation

C) CW Doppler tracings will not demonstrate a spectral window

increasing scan line density leads to improved ___ resolution

C) spatial

Which of the following persistence level should be used to optimize color doppler imaging of cardiac structures

B) Low

How is focusing performed using the reflected portion of the beam?

B) varying the number of PE elements used to receive the reflected echoes

The rectus abdominis muscles are associated with ____ while the diaphragm is associated with ____

A) refraction artifact, mirror image artifact

what term indicates the phenomenon of PW doppler tracing displaying a wider distribution of the velocity of blood cells with varying degrees of arterial blockage

D) spectral broadening

you are using a 5 MHz transducer to perform pulse wave doppler on the carotid arteries. you change to a 7.5 MHz continuous wave doppler transducer to evaluate blood flow how will this affect the propagation speed in soft tissue of the neck

B) remain constant

Which of the following increases at an arterial stenosis

B) resistance and velocity

which of the following transducers is capable of electronic beam steering?

D) curvilinear phased array

slice thickness artifact can result in

B) the appearance of debris in an anechoic structure

what is the correct order for removal of personal protective equipment

B) gloves, goggles, gown, mask

what effect does frequency compounding have on the image

A) reduce speckle artifact

If blood pressure increases with no change in resistance what happens

C) increased flow rate

which of the following can reduce or eliminate range ambiguity artifact

A) decreasing the PRF

100

Transmit Delay or Receive Focusing improves ____ resolution

D) lateral

SPI version A

Karla Alvarez · 100問 · 1年前

SPI version A

100問 • 1年前

Karla Alvarez

SPI version A pt 2

Karla Alvarez · 66問 · 1年前

SPI version A pt 2

66問 • 1年前

Karla Alvarez

SPI version B

Karla Alvarez · 100問 · 1年前

SPI version B

100問 • 1年前

Karla Alvarez

SPI version B pt 2

Karla Alvarez · 67問 · 1年前

SPI version B pt 2

67問 • 1年前

Karla Alvarez

SPI version C

Karla Alvarez · 100問 · 1年前

SPI version C

100問 • 1年前

Karla Alvarez

SPI version C pt 2

Karla Alvarez · 61問 · 1年前

SPI version C pt 2

61問 • 1年前

Karla Alvarez

SPI version D pt 2

Karla Alvarez · 61問 · 1年前

SPI version D pt 2

61問 • 1年前

Karla Alvarez

ARDMS version A & B

Karla Alvarez · 77問 · 1年前

ARDMS version A & B

77問 • 1年前

Karla Alvarez

問題一覧

which of the following transducers would be preferred for breast imaging

C) 12 MHz linear array

which of the following console controls allows for comparison of imaging of two different locations at the same time

A) dual screen

Which of the following describes a multi dimensional array?

D) has thousands of elements arranged in a matrix pattern

Materials used for the matching layer of a transducer must have an impedance between impedance levels of

A) skin and PE element

which of the following terms can be used to describe the waveform displayed

A) low resistance

The grayscale map is adjusted to a new map just after freezing the image this is an example of

C) applying postprocessing

Spatial compounding

A) can decrease the appearance of useful artifacts, such as enhancement and shadowing

What Doppler artifact is demonstrated on the tracing?

D) cross talk

reducing the size of the field of view improves ____ resolution

D) temporal

how many shades of grey will a 6 bit system display?

C) 64

A _____ is an audible sign of turbulence in a vessel. A _____ is an audible sign of turbulence in the heart

D) bruit, murmur

which of The following will cause an object to be displayed in an improper location or at an incorrect size

B) refraction

increasing overall gain will

B) increase the amplitude of all the reflectors on the image

____ is used to improve the signal-to-noise ratio on color, Doppler image and is defined as the averaging of previous image frames to produce the newest frame

C) persistence

D) 0 MHz

which of the following information should never be entered into the ultrasound system as a patient identifier prior to start the exam

A) social security number

which of the following transducers reproduce the highest frequency sound waves?

A) 2mm element thickness, 6mm/us prop speed of the element

what imaging phenomenon is demonstrated on the video

A) spontaneous contrast

as you were scanning an obese adult patient you noticed a 0.7 thermal index or should you do next?

A) continue scanning and complete the full exam effectively to reduce exposure time

increasing the image size will increase the number of pixels in the real time image indicates

C) write magnification

amplification of the received signal occurs in the

B) beam former

The __ the pulse packet used in color Doppler, the better the flow sensitivity

B) larger

which of the following is an advantage of the new Capacitive Micromachine ultrasonic transducers compared to traditional transducer arrays

D) a wider bandwidth and improved detail resolution

use your cursor to measure the peak systolic velocity of the third wave form

blue dot ( peak = top )

The first step in any contrast exam is

A) optimize the 2D image

which of the following acoustic artifacts is demonstrated on the image?

B) mirror image

scatter is defined as

C) redirection of sound beam in several directions away from the transducer

which of the following factors affect the focal length of the transducer?

C) element diameter and frequency

what system component is responsible for 3-D image acquisition and presentation

C) image processor

If the incident beam angle is 25° what is the angle of reflection

A) 25°

as frequency increases the amount of scatter ____

A) increases

A linear transducer providing a trapezoidal image demonstrates degraded ____ resolution in the far field of the image

B) lateral

Frame rates can be improved by the use of what signal processing technique

B) parallel processing

Linear phased arrays utilize what type of focusing

D) mechanical and electronic

____ is an increase in the strength of returning echoes caused by intervening structures of low attenuation

D) enhancement

Harmonic imaging leads to

C) decreased image clutter

if you set the gain to the lowest level and slowly increase it until an echo is identified on the image. What are you evaluating on the ultrasound system?

C) minimum sensitivity

which of the following terms can be used to describe the attached Doppler tracing

D) spectral broadening

which of the following transducer provides the best spatial resolution of the cardiac structures

D) transesophageal array

which of the following system controls is used mainly in cardiac imaging to correct for dropout on the sides of the image

C) lateral gain

The amount of compensation necessary for different echoes varies with reflector

C) depth

what adjustments can be made to improve the attached image of the Doppler tracing to make it of diagnostic quality

A) lower the baseline

If 60% of the beam is transmitted what percent is reflected to the transducer

B) 40%

if media one has an impedance of 65 rayls media two also has an impedance of 65 rayls what percent of the beam will be reflected at their interface?

C) 0%

A Doppler shift of 1.5 kHz is detected in an artery. if the velocity of the blood flow doubles, what is the new Doppler shift detected?

C) 3kHz

which statement is true regarding the Q factor

D) better axial resolution is seen with shorter spatial pulse lengths and low Q factor

note the Doppler measurement on the image what other Doppler measurement should be taken to calculate the resistive index?

D) end diastolic velocity

if the stenosis or blockage reduces the vessel lumen to 1/4 of the normal vessel area at the velocity of flow at the stenosis must ___ to maintain the flow rate

A) quadruple

____ refers to the process of steering the scan lines in multiple views to evaluate tissues with several pulses with varied incident angles

D) spatial compounding

which of the following beam intensity values is used to assess potential patient exposure

C) SPTA

which of the following is a variable necessary to quantify the Doppler shift

B) transducer frequency

increasing the spectral Doppler sample size will increase the ____

A) spectral broadening

if a renal artery, Doppler exam demonstrates normal flow, but stenosis is identified on angiography valuation the ultrasound results are described as

B) false negative

when using a tissue phantom to evaluate range accuracy, what unit will be used to report the measurement

D) centimeter

which of the following is directly related to the peak Doppler shift?

B) transducer frequency

What is the proper procedure for removing soiled gloves?

The term used to describe the thickness of blood is

B) viscosity

blood is moving toward a 7 MHz transducer you expect the reflected frequency to be ____ 7 Mhz

A) greater than

if you are performing an abdominal exam but inadvertently select the carotid preset on the machine how will this affect your exam?

B) depth will be very superficial causing potential non-visualizations of abdominal structures

which of the following requires healthcare providers and organizations to develop and follow procedures that ensure the confidentiality and security of protected health information

D) health insurance portability an accountability act

when the sonographer decreases the imaging depth the ____

B) PRF will increase

The AIUM recommends that the thermal index for fetal imaging be maintained at a level at or below

D) 0.7

range resolution of a pulse wave system is determined by

D) both the source and medium

if the reflector is moving away from the stationary sound source the reflected wave will

B) have a lower frequency than the transmitted frequency

Which of the following techniques is described as a graphic representation of the motion of a structure over time?

D) M-mode

which of the following is a function of the pulser used to increase the signal-to-noise ratio

C) coded excitation

which of the following is true regarding signal-to-noise ratio

D) a high signal-to-noise ratio image is preferred over a low signal-to-noise ratio image

Range Equation: distance to reflector =

A) propagation speed x 1/2 (time to and from reflector)

which of the following parameters is displayed as the X- axis on a doppler tracing

B) time

which of the following is an advantage of virtual beam forming ( VBF) over traditional pulse echo imaging (PEI)

A) VBF allows for simultaneously real time grayscale, color, and spectral display

____ Determines the acoustic power of the transducer

A) the magnitude of the voltage spike

volume averaging artifact is greatest in

C) deep lesions

Which of the following will increase the amount of color displayed in a vessel located deep in the body?

D) increase frame rate

The arrow indicates what ultrasound phenomenon

A) clutter

no flow is detected while performing a color Doppler evaluation of a normal patent vein what will improve the color display?

D) decrease the sample size

When transmural pressure in a vein is high

D) the vein becomes enlarged and rounded

which of the following is related to the elevated peak rarefactional pressure in a sound beam

C) cavitation

What portion of the TGC curve is the deepest region attenuation compensation can occur

C) knee

what is a twinkle artifact?

B) mosaic colors displayed in a linear pattern and posterior to a dense object such as a renal stone

when estimating hydrostatic pressure every inch of blood in a column equates to

D) 2 mmHg

which of the following is necessary machine setting when performing a contrast elevation of the heart

A) low mechanical index value

Which of the following statements is true regarding equipment preparation for beginning in an ultrasound exam

A) adjust the height of the chair to allow your wrist to be fully extended while scanning

which Image demonstrates ring down artifact

which of the following will reduce the amount of color Doppler information displayed on the image

C) increased sample size

when evaluating a suspected arterial stenosis, a Doppler angle of ____ degrees will produce the most accurate flow velocity

A) 0

which of the following correctly describes a CW Doppler evaluation

C) CW Doppler tracings will not demonstrate a spectral window

increasing scan line density leads to improved ___ resolution

C) spatial

Which of the following persistence level should be used to optimize color doppler imaging of cardiac structures

B) Low

How is focusing performed using the reflected portion of the beam?

B) varying the number of PE elements used to receive the reflected echoes

The rectus abdominis muscles are associated with ____ while the diaphragm is associated with ____

A) refraction artifact, mirror image artifact

what term indicates the phenomenon of PW doppler tracing displaying a wider distribution of the velocity of blood cells with varying degrees of arterial blockage

D) spectral broadening

B) remain constant

Which of the following increases at an arterial stenosis

B) resistance and velocity

which of the following transducers is capable of electronic beam steering?

D) curvilinear phased array

slice thickness artifact can result in

B) the appearance of debris in an anechoic structure

what is the correct order for removal of personal protective equipment

B) gloves, goggles, gown, mask

what effect does frequency compounding have on the image

A) reduce speckle artifact

If blood pressure increases with no change in resistance what happens

C) increased flow rate

which of the following can reduce or eliminate range ambiguity artifact

A) decreasing the PRF

100

Transmit Delay or Receive Focusing improves ____ resolution

D) lateral