TEXAS VASCULAR TECHNOLOGIST LICENSE
EXAM – PRACTICE QUESTIONS AND
CORRECT ANSWERS (VERIFIED ANSWERS)
PLUS RATIONALES 2026 Q&A | INSTANT
DOWNLOAD PDF
1. Which vessel is most commonly evaluated during an ankle–
brachial index (ABI)?
A. Dorsalis pedis artery
B. Posterior tibial artery
C. Peroneal artery
D. Anterior tibial artery
Answer: B. Posterior tibial artery
Rationale: The posterior tibial artery provides the most
consistent signal at the ankle, making it the preferred site for
ABI measurement.
2. A high-resistance arterial Doppler waveform typically
demonstrates:
A. Continuous forward flow throughout cardiac cycle
B. Rapid systolic upstroke with little diastolic flow
,C. Early diastolic reversal with high diastolic forward flow
D. Blunted systolic upstroke and absent diastolic flow
Answer: B. Rapid systolic upstroke with little diastolic flow
Rationale: High-resistance beds (e.g., extremities at rest) show
brief systolic peaks and minimal diastolic flow.
3. Which condition most commonly produces a “to-and-fro”
Doppler signal?
A. Pseudoaneurysm
B. Arteriovenous fistula
C. Chronic occlusion
D. In-stent restenosis
Answer: A. Pseudoaneurysm
Rationale: A pseudoaneurysm’s neck shows bidirectional “to-
and-fro” flow due to oscillation of blood between artery and
sac.
4. A parvus–tardus waveform suggests disease located:
A. Proximal to the sampling site
B. Distal to the sampling site
C. At the same level as sampling
D. Contralateral artery disease
Answer: A. Proximal to the sampling site
,Rationale: A dampened, delayed systolic upstroke indicates
inflow obstruction upstream.
5. Which ABI value indicates severe arterial disease?
A. 1.0–1.3
B. 0.9–1.0
C. 0.5–0.8
D. <0.4
Answer: D. <0.4
Rationale: An ABI below 0.4 correlates with critical limb
ischemia and severe perfusion impairment.
6. A carotid bruit on auscultation is most associated with:
A. Total occlusion
B. Significant stenosis
C. Normal arterial flow
D. Subclavian steal
Answer: B. Significant stenosis
Rationale: Turbulence from elevated velocities produces
vibrations that manifest as bruits.
7. The most specific ultrasonic finding of acute deep venous
thrombosis is:
, A. Venous reflux
B. Lack of compressibility
C. Absent color flow
D. Echogenic thrombus
Answer: B. Lack of compressibility
Rationale: Noncompressibility is the primary and most reliable
criterion for acute DVT diagnosis.
8. A “string sign” in the internal carotid artery indicates:
A. Total occlusion
B. Near occlusion with trickle flow
C. Normal flow
D. Severe calcification
Answer: B. Near occlusion with trickle flow
Rationale: The “string sign” represents extremely low flow
through a critically narrowed lumen.
9. Which condition produces monophasic waveforms in the
lower extremity arteries?
A. Aneurysm
B. Proximal occlusive disease
C. AV fistula
D. Vasospasm
EXAM – PRACTICE QUESTIONS AND
CORRECT ANSWERS (VERIFIED ANSWERS)
PLUS RATIONALES 2026 Q&A | INSTANT
DOWNLOAD PDF
1. Which vessel is most commonly evaluated during an ankle–
brachial index (ABI)?
A. Dorsalis pedis artery
B. Posterior tibial artery
C. Peroneal artery
D. Anterior tibial artery
Answer: B. Posterior tibial artery
Rationale: The posterior tibial artery provides the most
consistent signal at the ankle, making it the preferred site for
ABI measurement.
2. A high-resistance arterial Doppler waveform typically
demonstrates:
A. Continuous forward flow throughout cardiac cycle
B. Rapid systolic upstroke with little diastolic flow
,C. Early diastolic reversal with high diastolic forward flow
D. Blunted systolic upstroke and absent diastolic flow
Answer: B. Rapid systolic upstroke with little diastolic flow
Rationale: High-resistance beds (e.g., extremities at rest) show
brief systolic peaks and minimal diastolic flow.
3. Which condition most commonly produces a “to-and-fro”
Doppler signal?
A. Pseudoaneurysm
B. Arteriovenous fistula
C. Chronic occlusion
D. In-stent restenosis
Answer: A. Pseudoaneurysm
Rationale: A pseudoaneurysm’s neck shows bidirectional “to-
and-fro” flow due to oscillation of blood between artery and
sac.
4. A parvus–tardus waveform suggests disease located:
A. Proximal to the sampling site
B. Distal to the sampling site
C. At the same level as sampling
D. Contralateral artery disease
Answer: A. Proximal to the sampling site
,Rationale: A dampened, delayed systolic upstroke indicates
inflow obstruction upstream.
5. Which ABI value indicates severe arterial disease?
A. 1.0–1.3
B. 0.9–1.0
C. 0.5–0.8
D. <0.4
Answer: D. <0.4
Rationale: An ABI below 0.4 correlates with critical limb
ischemia and severe perfusion impairment.
6. A carotid bruit on auscultation is most associated with:
A. Total occlusion
B. Significant stenosis
C. Normal arterial flow
D. Subclavian steal
Answer: B. Significant stenosis
Rationale: Turbulence from elevated velocities produces
vibrations that manifest as bruits.
7. The most specific ultrasonic finding of acute deep venous
thrombosis is:
, A. Venous reflux
B. Lack of compressibility
C. Absent color flow
D. Echogenic thrombus
Answer: B. Lack of compressibility
Rationale: Noncompressibility is the primary and most reliable
criterion for acute DVT diagnosis.
8. A “string sign” in the internal carotid artery indicates:
A. Total occlusion
B. Near occlusion with trickle flow
C. Normal flow
D. Severe calcification
Answer: B. Near occlusion with trickle flow
Rationale: The “string sign” represents extremely low flow
through a critically narrowed lumen.
9. Which condition produces monophasic waveforms in the
lower extremity arteries?
A. Aneurysm
B. Proximal occlusive disease
C. AV fistula
D. Vasospasm
