SPI version B

100問 • 1年前

Karla Alvarez

通報

問題一覧

The pulser sends the voltage spike to the ____

D) transducer

mispositioned focal zones can lead to excessive ____

C) volume averaging artifact

As the transducer frequency increases the spatial pulse length _____

B) decreases

Which of the following will reduce anisotropy artifact

A) rocking the transducer

Autocorrelation calculates the _____ of flow for color Doppler flow display

C) mean velocity

Which physics principle describes the decrease in pressure at stenosis due to increased velocity at the site

B) Bernoulli principal

If you obtain a peak velocity of 60 cm/s the Doppler correction angle set to 60° and you change it to 0°. What is the displayed velocity in the vessel?

D) 30 cm/s

The brightness of the reflection on the Doppler tracing represents ___

A) the number of red blood cells moving at each velocity displayed

Which of the statement is true regarding decreased frame rate?

B) increased line density will lead to a decreased frame rate

The grayscale map is adjusted to a new map just prior to freezing the image. This is an example of?

C) applying pre-processing

What system component determines the initial amplitude of the ultrasound wave

A) the transducer

You are using a 3 MHz transducer to perform pulse wave Doppler if you change to continuous wave Doppler using the same transducer, what happens to the frequency of the beam

D) remains constant

Which of the following system control adjustments will increase the amount of color Doppler that is superimposed over 2D imaging

D) increased threshold and increased persistence

What Doppler artifact results in unwanted reflected information from locations other than the desired sample location

C) range ambiguity

If a renal artery Doppler exam demonstrates stenosis and stenosis is identified on angiography evaluation the ultrasound result are described as

B) true positive

The mechanical index predicts the potential for what effect in the tissue

C) cavitation

The ALARA principle describes

B) the rule of thumb for adjusting gain before outpower to minimize ultrasound exposure

Which system control hopes to avoid a 90° incident angle for color Doppler

D) steering the sample

Axial resolution is primarily dependent upon

D) pulse duration

Which of the following transducer components reduces the sensitivity and efficiency of the ultrasound system

C) damping material

Activating which of the following ultrasound functions will cause the largest increase in beam intensity

D) PW Doppler

Which of the following requires a Doppler cursor angle of 60° or less for accurate reporting of numerical values

C) peak systolic velocity

Which transducer component improves elevation resolution

B) acoustic lens

The greatest intensity and amplitude of the second harmonic reflection are located

C) at the level of the focal zone

The ultrasound image is usually created using all of the reflected frequencies in a pulse. when using ____ the reflected frequencies are divided into smaller sections and each of the stenosis is used to create an image

D) frequency compounding

The range equation is used to determine the

D) distance to a reflector

Which of the following describes how to properly set the color Doppler gain levels for an image

C) increase the gain until blossoming is noted and then decrease to just below that level

If the sonographer decreases the image depth how will this affect the pulse repetition frequency?

D) increase

During an exam, you change from a 5 MHz transducer to a 3 MHz transducer what happens to the period of the waves produced from the new transducer

A) increases

Using the same type of ultrasound system, a 5 MHz continuous wave and a 5 MHz pulse wave transducer are at the same time to evaluate blood flow in the same artery which transducer will produce a display of spectral tracing first

B) they both will produce the wave form at the same time

The imaging PRF is set to a level of 14kHz. This can also be written as

D) 14,000 Hz

Which of the following is an advantage of frequency compounding over spatial compounding

A) frequency compounding does not affect temporal resolution while spatial compounding degrades temporal resolution

As the Propagation speed of the crystal increases the frequency of the transducer

C) increases

In order to assess low velocity flow, which of the following system adjustment should be made

D) decease the wall filter setting

If each image requires 50 acoustic pulses in your system displays 30 image per second what is the pulse reputation frequency?

D) 1500 Hz

Federal regulation require that imaging studies be retained for a period of

B) 6 years

Refraction will cause improper ___ positioning of echoes on the image

B) lateral

Which of the following transducers would have the best axial resolution?

A) 2 mm spatial pulse length

Which of the following correctly describes power Doppler

C) color display is not angle dependent

Which artifact is demonstrated on the image (yellow arrows)

D) refractive shadowing

Which is the following bioeffects refers to the information of microbubbles that burst and caused damage to tissues

B) transient cavitation

Which of the following will improve a color Doppler image by averaging previous frame rates to create a new image

A) persistence

You were scanning with a transducer that maintains a constant of two scan lines per sector degree. Which of the following statements is true regarding changing a 45° sector angle to a 90° sector angle

D) the temporal resolution will degrade

When you activate harmonic imaging and add a focal zone to the field of view which type of resolution will degrade with these changes

B) temporal

____ improves penetration and axial resolution

B) coded excitation

Review the image and the system setting listed along the right side. What is the setting that should be decreased to improve the diagnostic quality of color Doppler image

green box

If the radius of a blood vessel decreases by 50%, what happens to the flow volume

A) decreases by 16 x

If the pulser PRF is 5 kHz what will the ultrasound PRF be?

A) 5 kHz

____ refers to redirection of a portion of the ultrasound beam from a boundary

D) reflection

Constructive and destructive interference are demonstrated on the image as what acoustic artifact

C) speckle

The green or yellow color on the variance color map indicates

B) turbulent flow

Changing the dynamic range from 50 dB to 75 dB will

C) increase the number of shades of gray displayed

The frequency of the transducer depends primarily on

B) element thickness

When wearing a protective gown and gloves

C) the open end of the gloves should be pulled over the wrist cuffs of the gown

While performing a fetal ultrasound exam what can be done to minimize patient exposure

A) provide an optimal exam in the shortest exam time possible

A soundwave spikes a border at a 90° angle. The second media has a higher density, but both media have the same propagation speed. What will occur at this border?

A) reflection will occur

Greater than 90% of the ultrasound beam will be reflected at an interface between _____

C) gas and tissue

____ uses the amplitude of the Doppler shift and then intensity of the red blood cells to be able to generate color on the image dependent of the angle of insonation

C) power Doppler

What changes occur To the ultrasound beam when timed pulses are emitted from the edge elements to the center elements of the phased transducer

B) electronic focusing occurs

In a pulse wave system how often the blood flow is sampled is determined by the ___

D) PRF

Increasing transmit output power will increase the risk of bioeffects and

D) the signal-to-noise ratio

Which of the following image controls is used to counteract beam attenuation

A) time gain compensation

Which transducer should be used for evaluation of an area within 1 cm of the transducer face

B) 2D linear array

Which of the following is NOT adjusted by the sonographer?

D) demodulation/detection

Which of the following image controls can be adjusted to produce a smoother color Doppler image

C) persistence

Which of the following correctly describes M mode

C) uses a high sampling rate

When evaluating heavily calcified arteries, what system setting should be increased, improve the demonstration of flow in the vessels

B) persistence and sensitivity

Which of the following is recommended for 2D imaging patients with high body mass index?

D) deactivate harmonic imaging

To obtain a longer near zone

B) change from a 3 MHz to 6 MHz transducer

When using a high-level disinfectant on an ultrasound transducer it is important to monitor soak time rinse time temperature requirements, ventilation, and ____

B) duration of use of solution

Attenuation increases with

C) frequency and distance traveled

If there is no diastolic flow demonstrated on a Doppler tracing what will the resistive index be

B) 1.0

According to the attached color map, what color will the blood be demonstrated that is moving toward the probe at a velocity of 80 cm/s and is highly turbulent

B) green

___ is defined as the ratio of particle pressure to particle velocity at a given point within the ultrasound beam

C) impedance

Refraction occurs when a soundwave passes through an interface between two media at an oblique angle. If the propagation speed in the medium 2 is greater than a medium 1 the transmitted angle of the pulse will ____

A) increase

Which of the following is a function of signal processor

C) filtering and compression

As the pulse repetition period decreases ___

D) the imaging depth decreases

What blood flow characteristic is being measured on the Doppler tracing provided

C) acceleration time

The tissue phantom is scanned from the top. There are 6 pins evenly spaced from the top to bottom of the phantom. The width of the pins is measured to assess the ____ of the system

A) lateral resolution

Temperature elevation in tissue is most prevalent with

C) Rayleigh scatter

What blood flow characteristic is being measured on the Doppler tracings provided

C) acceleration time

Tissue Doppler imaging is commonly used in ___

C) echocardiography

Which of the arrows on the image demonstrate the spatial pulse length?

D) none of the above

Which of the following correctly describes a difference between read and write magnification

D) read magnification displays a select portion of the original image from data stored in the system. write magnification allows the selection of a region of the image to display and the ultrasound system rescan the area to produce a new image.

The number of red blood cells in a Doppler sample is directly related to

A) brightness of the waveform displayed

which of the following transducers will produce the lowest frequency soundwaves

D) 6mm element thickness 2 mm/µs propagation speed of the element

During your first exam of the day, you noticed a small crack in the face of the transducer, which of the following describes the correct action to take next

D) contact service immediately, and the damage probe should not be used until it is repaired

If you increase the sector angle from 45 to 90° and reduce the line density by 50% what happens to the frame rate

D) unchanged

How do you correct beam width artifact on a Doppler tracing

A) use a smaller sample size

Changing the dynamic range from 50 dB to 75 dB will

C) increase the number of shades of gray displayed

What effect will a mechanical index of 1.0 have on a contrast exams

C) the increase beam intensity will burst the contrast bubbles quickly

Which of the following is a violation of HIPAA policies

A) posting patient symptoms and demographics with an anonymous ultrasound image on social media

Which of the following statements is true regarding damage to the matching layer of the transducer

C) it causes an increased risk of electrical shock to the patient

Which of the following parameters is displayed on the Y axis on a Doppler tracing

C) frequency shift

Which of the following correctly describes the specificity of a testing technique

C) the ability of a test to rule out disease when it is NOT present

A 4 bit memory will demonstrate ___ shades of Grey

C) 16

Which two curses will be used to measure the velocity used to calculate the resistive index for the flow in the renal artery tracing

C) blue and yellow

If the input power is 2 mW and the output power is 1 mW what is the gain?

D) -3dB

Which of the following will demonstrate speckle artifact and improve the signal-to-noise ratio?

A) using a higher frequency transducer

100

Which of the following best describes the difference between 3-D and 4D ultrasound imaging

D) 4D imaging provides real time display of 3-D images

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 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

Karla Alvarez · 100問 · 1年前

SPI version D

100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

The pulser sends the voltage spike to the ____

D) transducer

mispositioned focal zones can lead to excessive ____

C) volume averaging artifact

As the transducer frequency increases the spatial pulse length _____

B) decreases

Which of the following will reduce anisotropy artifact

A) rocking the transducer

Autocorrelation calculates the _____ of flow for color Doppler flow display

C) mean velocity

Which physics principle describes the decrease in pressure at stenosis due to increased velocity at the site

B) Bernoulli principal

If you obtain a peak velocity of 60 cm/s the Doppler correction angle set to 60° and you change it to 0°. What is the displayed velocity in the vessel?

D) 30 cm/s

The brightness of the reflection on the Doppler tracing represents ___

A) the number of red blood cells moving at each velocity displayed

Which of the statement is true regarding decreased frame rate?

B) increased line density will lead to a decreased frame rate

The grayscale map is adjusted to a new map just prior to freezing the image. This is an example of?

C) applying pre-processing

What system component determines the initial amplitude of the ultrasound wave

A) the transducer

You are using a 3 MHz transducer to perform pulse wave Doppler if you change to continuous wave Doppler using the same transducer, what happens to the frequency of the beam

D) remains constant

Which of the following system control adjustments will increase the amount of color Doppler that is superimposed over 2D imaging

D) increased threshold and increased persistence

What Doppler artifact results in unwanted reflected information from locations other than the desired sample location

C) range ambiguity

If a renal artery Doppler exam demonstrates stenosis and stenosis is identified on angiography evaluation the ultrasound result are described as

B) true positive

The mechanical index predicts the potential for what effect in the tissue

C) cavitation

The ALARA principle describes

B) the rule of thumb for adjusting gain before outpower to minimize ultrasound exposure

Which system control hopes to avoid a 90° incident angle for color Doppler

D) steering the sample

Axial resolution is primarily dependent upon

D) pulse duration

Which of the following transducer components reduces the sensitivity and efficiency of the ultrasound system

C) damping material

Activating which of the following ultrasound functions will cause the largest increase in beam intensity

D) PW Doppler

Which of the following requires a Doppler cursor angle of 60° or less for accurate reporting of numerical values

C) peak systolic velocity

Which transducer component improves elevation resolution

B) acoustic lens

The greatest intensity and amplitude of the second harmonic reflection are located

C) at the level of the focal zone

D) frequency compounding

The range equation is used to determine the

D) distance to a reflector

Which of the following describes how to properly set the color Doppler gain levels for an image

C) increase the gain until blossoming is noted and then decrease to just below that level

If the sonographer decreases the image depth how will this affect the pulse repetition frequency?

D) increase

During an exam, you change from a 5 MHz transducer to a 3 MHz transducer what happens to the period of the waves produced from the new transducer

A) increases

B) they both will produce the wave form at the same time

The imaging PRF is set to a level of 14kHz. This can also be written as

D) 14,000 Hz

Which of the following is an advantage of frequency compounding over spatial compounding

A) frequency compounding does not affect temporal resolution while spatial compounding degrades temporal resolution

As the Propagation speed of the crystal increases the frequency of the transducer

C) increases

In order to assess low velocity flow, which of the following system adjustment should be made

D) decease the wall filter setting

If each image requires 50 acoustic pulses in your system displays 30 image per second what is the pulse reputation frequency?

D) 1500 Hz

Federal regulation require that imaging studies be retained for a period of

B) 6 years

Refraction will cause improper ___ positioning of echoes on the image

B) lateral

Which of the following transducers would have the best axial resolution?

A) 2 mm spatial pulse length

Which of the following correctly describes power Doppler

C) color display is not angle dependent

Which artifact is demonstrated on the image (yellow arrows)

D) refractive shadowing

Which is the following bioeffects refers to the information of microbubbles that burst and caused damage to tissues

B) transient cavitation

Which of the following will improve a color Doppler image by averaging previous frame rates to create a new image

A) persistence

D) the temporal resolution will degrade

When you activate harmonic imaging and add a focal zone to the field of view which type of resolution will degrade with these changes

B) temporal

____ improves penetration and axial resolution

B) coded excitation

Review the image and the system setting listed along the right side. What is the setting that should be decreased to improve the diagnostic quality of color Doppler image

green box

If the radius of a blood vessel decreases by 50%, what happens to the flow volume

A) decreases by 16 x

If the pulser PRF is 5 kHz what will the ultrasound PRF be?

A) 5 kHz

____ refers to redirection of a portion of the ultrasound beam from a boundary

D) reflection

Constructive and destructive interference are demonstrated on the image as what acoustic artifact

C) speckle

The green or yellow color on the variance color map indicates

B) turbulent flow

Changing the dynamic range from 50 dB to 75 dB will

C) increase the number of shades of gray displayed

The frequency of the transducer depends primarily on

B) element thickness

When wearing a protective gown and gloves

C) the open end of the gloves should be pulled over the wrist cuffs of the gown

While performing a fetal ultrasound exam what can be done to minimize patient exposure

A) provide an optimal exam in the shortest exam time possible

A soundwave spikes a border at a 90° angle. The second media has a higher density, but both media have the same propagation speed. What will occur at this border?

A) reflection will occur

Greater than 90% of the ultrasound beam will be reflected at an interface between _____

C) gas and tissue

____ uses the amplitude of the Doppler shift and then intensity of the red blood cells to be able to generate color on the image dependent of the angle of insonation

C) power Doppler

What changes occur To the ultrasound beam when timed pulses are emitted from the edge elements to the center elements of the phased transducer

B) electronic focusing occurs

In a pulse wave system how often the blood flow is sampled is determined by the ___

D) PRF

Increasing transmit output power will increase the risk of bioeffects and

D) the signal-to-noise ratio

Which of the following image controls is used to counteract beam attenuation

A) time gain compensation

Which transducer should be used for evaluation of an area within 1 cm of the transducer face

B) 2D linear array

Which of the following is NOT adjusted by the sonographer?

D) demodulation/detection

Which of the following image controls can be adjusted to produce a smoother color Doppler image

C) persistence

Which of the following correctly describes M mode

C) uses a high sampling rate

When evaluating heavily calcified arteries, what system setting should be increased, improve the demonstration of flow in the vessels

B) persistence and sensitivity

Which of the following is recommended for 2D imaging patients with high body mass index?

D) deactivate harmonic imaging

To obtain a longer near zone

B) change from a 3 MHz to 6 MHz transducer

When using a high-level disinfectant on an ultrasound transducer it is important to monitor soak time rinse time temperature requirements, ventilation, and ____

B) duration of use of solution

Attenuation increases with

C) frequency and distance traveled

If there is no diastolic flow demonstrated on a Doppler tracing what will the resistive index be

B) 1.0

According to the attached color map, what color will the blood be demonstrated that is moving toward the probe at a velocity of 80 cm/s and is highly turbulent

B) green

___ is defined as the ratio of particle pressure to particle velocity at a given point within the ultrasound beam

C) impedance

A) increase

Which of the following is a function of signal processor

C) filtering and compression

As the pulse repetition period decreases ___

D) the imaging depth decreases

What blood flow characteristic is being measured on the Doppler tracing provided

C) acceleration time

The tissue phantom is scanned from the top. There are 6 pins evenly spaced from the top to bottom of the phantom. The width of the pins is measured to assess the ____ of the system

A) lateral resolution

Temperature elevation in tissue is most prevalent with

C) Rayleigh scatter

What blood flow characteristic is being measured on the Doppler tracings provided

C) acceleration time

Tissue Doppler imaging is commonly used in ___

C) echocardiography

Which of the arrows on the image demonstrate the spatial pulse length?

D) none of the above

Which of the following correctly describes a difference between read and write magnification

The number of red blood cells in a Doppler sample is directly related to

A) brightness of the waveform displayed

which of the following transducers will produce the lowest frequency soundwaves

D) 6mm element thickness 2 mm/µs propagation speed of the element

During your first exam of the day, you noticed a small crack in the face of the transducer, which of the following describes the correct action to take next

D) contact service immediately, and the damage probe should not be used until it is repaired

If you increase the sector angle from 45 to 90° and reduce the line density by 50% what happens to the frame rate

D) unchanged

How do you correct beam width artifact on a Doppler tracing

A) use a smaller sample size

Changing the dynamic range from 50 dB to 75 dB will

C) increase the number of shades of gray displayed

What effect will a mechanical index of 1.0 have on a contrast exams

C) the increase beam intensity will burst the contrast bubbles quickly

Which of the following is a violation of HIPAA policies

A) posting patient symptoms and demographics with an anonymous ultrasound image on social media

Which of the following statements is true regarding damage to the matching layer of the transducer

C) it causes an increased risk of electrical shock to the patient

Which of the following parameters is displayed on the Y axis on a Doppler tracing

C) frequency shift

Which of the following correctly describes the specificity of a testing technique

C) the ability of a test to rule out disease when it is NOT present

A 4 bit memory will demonstrate ___ shades of Grey

C) 16

Which two curses will be used to measure the velocity used to calculate the resistive index for the flow in the renal artery tracing

C) blue and yellow

If the input power is 2 mW and the output power is 1 mW what is the gain?

D) -3dB

Which of the following will demonstrate speckle artifact and improve the signal-to-noise ratio?

A) using a higher frequency transducer

100

Which of the following best describes the difference between 3-D and 4D ultrasound imaging

D) 4D imaging provides real time display of 3-D images