DMSU 241 Module 2 Quiz Questions
and Answers All Correct
Which of the following parameters does not distinguish between intimal dissection and
internal jugular vein wall artifact in the common carotid artery? - Answer- Findings of
Doppler flow velocity less than 125 cm/s in the mid common carotid artery
Doppler waveform features proximal to a severe stenosis with limited collaterals will
display - Answer- A high resistance pattern with low or absent diastolic flow
What does spectral broadening in the Doppler waveform generally represent? - Answer-
Turbulent Flow
What are the factors that help to positively identify the external carotid artery (vs. the
internal carotid artery)? - Answer- The external carotid responds to temporal tap and the
internal carotid does not
A plaque develops and starts to fill the carotid bulb - Answer- Flow separation
disappears
A RIND or reversible ischemic neurologic deficit can be described as - Answer- A
neurologic symptom which lasts between 24 and 72 hours
Which type/frequency of transducer is most appropriate for the majority of carotid
duplex ultrasound studies? - Answer- 7-4 MHz linear
A mobile-appearing white line echo that can be seen in the common carotid artery is -
Answer- Reverberation artifact from the internal jugular vein
All of the following techniques should be utilized to differentiate string sign flow from
complete vessel occlusion except - Answer- High Wall Filters
What test can be used to change a subclavian steal from the "latent" stage to the
"complete" stage? - Answer- Reactive Hyperemia
What Doppler findings indicate a proximal vertebral artery severe stenosis? - Answer-
Antegrade, dampened Doppler flow within the vertebral artery at mid and distal neck
and Answers All Correct
Which of the following parameters does not distinguish between intimal dissection and
internal jugular vein wall artifact in the common carotid artery? - Answer- Findings of
Doppler flow velocity less than 125 cm/s in the mid common carotid artery
Doppler waveform features proximal to a severe stenosis with limited collaterals will
display - Answer- A high resistance pattern with low or absent diastolic flow
What does spectral broadening in the Doppler waveform generally represent? - Answer-
Turbulent Flow
What are the factors that help to positively identify the external carotid artery (vs. the
internal carotid artery)? - Answer- The external carotid responds to temporal tap and the
internal carotid does not
A plaque develops and starts to fill the carotid bulb - Answer- Flow separation
disappears
A RIND or reversible ischemic neurologic deficit can be described as - Answer- A
neurologic symptom which lasts between 24 and 72 hours
Which type/frequency of transducer is most appropriate for the majority of carotid
duplex ultrasound studies? - Answer- 7-4 MHz linear
A mobile-appearing white line echo that can be seen in the common carotid artery is -
Answer- Reverberation artifact from the internal jugular vein
All of the following techniques should be utilized to differentiate string sign flow from
complete vessel occlusion except - Answer- High Wall Filters
What test can be used to change a subclavian steal from the "latent" stage to the
"complete" stage? - Answer- Reactive Hyperemia
What Doppler findings indicate a proximal vertebral artery severe stenosis? - Answer-
Antegrade, dampened Doppler flow within the vertebral artery at mid and distal neck
