ARDMS RVT EXAM QUESTIONS AND ANSWERS TEST P
ANSWERS 2026 EXAM TEST PAPER COMPLETE
QUESTIONS AND ANSWERS ALREADY PASSED
◉ What is the appropriate frequency to use when assessing the
carotid arteries? Answer: 5 - 10 Megahertz
◉ What is true regarding axial resolution in carotid imaging?
Answer: Resolves two targets positioned one in front of another
along the axis of beam propagation. Improves the observer's ability
to estimate vessel wall thickness.
◉ Using the temporal window for TCD, you find a strong signal with
considerable diastolic flow at a depth of 50mm. This is most likely:
Answer: Middle Cerebral Artery. 30-60mm is the depth with a
velocity of 43-67cm/s .
◉ To optimize carotid vessel image data, lateral resolution should
be: Answer: As small as possible , to resolve side by side lesions
◉ The TCD window used for assessing the middle cerebral artery is:
Answer: Temporal
,◉ A carotid bruit can be detected with color flow and spectral
analysis as: Answer: A mosaic of low red and blue frequencies in
color flow in tissue lying outside of the lumen, and oscillatory
waveforms above and below baseline in the spectral waveform.
◉ What isn't consistent with total occlusion of the internal carotid
artery ? Answer: Retrograde flow in the distal internal carotid artery
◉ Two of the major branches of the external carotid arteries include
the: Answer: Superficial temporal and facial arteries.
◉ Characteristic of calcified plaque on B-mode image: Answer:
Brightly echogenic plaque and acoustic shadowing
◉ What does homogenous plaque look like? Answer: Echoes are soft
and gray and have essentially the same character throughout.
◉ The TCD window used for assessing the ophthalmic artery and
carotid siphon is: Answer: Orbital
◉ The Doppler diagnostic criterion that is most important for calling
greater than 80% stenosis is: Answer: End-diastolic velocity.
,◉ An arterial stenosis that is 75% by cross-sectional area reduction
corresponds to a diameter reduction of: Answer: 50%
◉ An arterial stenosis that is 80% by diameter reduction
corresponds to a cross-sectional area reduction of: Answer: 96%
◉ Stenosis 10% by diameter reduction corresponds to a cross-
sectional area reduction of: Answer: 19%
◉ Stenosis 20% by diameter reduction corresponds to a cross-
sectional area reduction of: Answer: 36%
◉ Stenosis 30% by diameter reduction corresponds to a cross-
sectional area reduction of: Answer: 51%
◉ Stenosis 40% by diameter reduction corresponds to a cross-
sectional area reduction of: Answer: 64%
◉ Stenosis 50% by diameter reduction corresponds to a cross-
sectional area reduction of: Answer: 75%
◉ Stenosis 60% by diameter reduction corresponds to a cross-
sectional area reduction of: Answer: 84%
, ◉ Stenosis 70% by diameter reduction corresponds to a cross-
sectional area reduction of: Answer: 91%
◉ Stenosis 80% by diameter reduction corresponds to a cross-
sectional area reduction of: Answer: 96%
◉ Stenosis 90% by diameter reduction corresponds to a cross-
sectional area reduction of: Answer: 99%
◉ A vascular lab calls a stenosis 60-70% by diameter based on its
duplex assessment, but angiography the next day calls it 90%
diameter. Possible reasons for this discrepancy might include:
Answer: The stenosis is long and smooth, changing its Doppler
character compared to that of a shorter lesion. Only one plane of
visualization was used for angiography. Poor angle- correction with
the duplex, creating artificially low velocity estimates. Acoustic
shadowing prevented Doppler assessment of the maximal
narrowing
◉ You are examining hardcopy of a TCD exam. One printout shows a
spectral waveform labeled "suboccipital window", and the depth is
indicated to be 90mm. This is most likely the: Answer: Basilar artery
◉ The characteristics of flow in the different carotid artery segments
are: Answer: High-resistance character in the ECA, low-resistance in
the ICA, with mixed character in the CCA
ANSWERS 2026 EXAM TEST PAPER COMPLETE
QUESTIONS AND ANSWERS ALREADY PASSED
◉ What is the appropriate frequency to use when assessing the
carotid arteries? Answer: 5 - 10 Megahertz
◉ What is true regarding axial resolution in carotid imaging?
Answer: Resolves two targets positioned one in front of another
along the axis of beam propagation. Improves the observer's ability
to estimate vessel wall thickness.
◉ Using the temporal window for TCD, you find a strong signal with
considerable diastolic flow at a depth of 50mm. This is most likely:
Answer: Middle Cerebral Artery. 30-60mm is the depth with a
velocity of 43-67cm/s .
◉ To optimize carotid vessel image data, lateral resolution should
be: Answer: As small as possible , to resolve side by side lesions
◉ The TCD window used for assessing the middle cerebral artery is:
Answer: Temporal
,◉ A carotid bruit can be detected with color flow and spectral
analysis as: Answer: A mosaic of low red and blue frequencies in
color flow in tissue lying outside of the lumen, and oscillatory
waveforms above and below baseline in the spectral waveform.
◉ What isn't consistent with total occlusion of the internal carotid
artery ? Answer: Retrograde flow in the distal internal carotid artery
◉ Two of the major branches of the external carotid arteries include
the: Answer: Superficial temporal and facial arteries.
◉ Characteristic of calcified plaque on B-mode image: Answer:
Brightly echogenic plaque and acoustic shadowing
◉ What does homogenous plaque look like? Answer: Echoes are soft
and gray and have essentially the same character throughout.
◉ The TCD window used for assessing the ophthalmic artery and
carotid siphon is: Answer: Orbital
◉ The Doppler diagnostic criterion that is most important for calling
greater than 80% stenosis is: Answer: End-diastolic velocity.
,◉ An arterial stenosis that is 75% by cross-sectional area reduction
corresponds to a diameter reduction of: Answer: 50%
◉ An arterial stenosis that is 80% by diameter reduction
corresponds to a cross-sectional area reduction of: Answer: 96%
◉ Stenosis 10% by diameter reduction corresponds to a cross-
sectional area reduction of: Answer: 19%
◉ Stenosis 20% by diameter reduction corresponds to a cross-
sectional area reduction of: Answer: 36%
◉ Stenosis 30% by diameter reduction corresponds to a cross-
sectional area reduction of: Answer: 51%
◉ Stenosis 40% by diameter reduction corresponds to a cross-
sectional area reduction of: Answer: 64%
◉ Stenosis 50% by diameter reduction corresponds to a cross-
sectional area reduction of: Answer: 75%
◉ Stenosis 60% by diameter reduction corresponds to a cross-
sectional area reduction of: Answer: 84%
, ◉ Stenosis 70% by diameter reduction corresponds to a cross-
sectional area reduction of: Answer: 91%
◉ Stenosis 80% by diameter reduction corresponds to a cross-
sectional area reduction of: Answer: 96%
◉ Stenosis 90% by diameter reduction corresponds to a cross-
sectional area reduction of: Answer: 99%
◉ A vascular lab calls a stenosis 60-70% by diameter based on its
duplex assessment, but angiography the next day calls it 90%
diameter. Possible reasons for this discrepancy might include:
Answer: The stenosis is long and smooth, changing its Doppler
character compared to that of a shorter lesion. Only one plane of
visualization was used for angiography. Poor angle- correction with
the duplex, creating artificially low velocity estimates. Acoustic
shadowing prevented Doppler assessment of the maximal
narrowing
◉ You are examining hardcopy of a TCD exam. One printout shows a
spectral waveform labeled "suboccipital window", and the depth is
indicated to be 90mm. This is most likely the: Answer: Basilar artery
◉ The characteristics of flow in the different carotid artery segments
are: Answer: High-resistance character in the ECA, low-resistance in
the ICA, with mixed character in the CCA
