Vascular Technology (VT) Specialty Exam Prep

The ARDMS Vascular Technology (VT) specialty exam earns the Registered Vascular Technologist (RVT) credential. It has the lowest first-time pass rate among all seven specialties (70% in 2025) and tests a deep understanding of hemodynamics, Doppler physics, carotid stenosis criteria, DVT protocols, peripheral arterial disease, and abdominal vascular assessment.

What the VT Exam Covers

The Vascular Technology registration is a 170-question, 3-hour examination administered by the ARDMS. Work through every content domain in proportion to its published weight rather than reviewing only familiar topics.

Who This Exam Is For

The VT credential suits both sonography students sitting for their first registration and practicing sonographers adding a new specialty. The outline covers material that may not come up in every clinical setting. Mapping each study block to a specific domain helps you review the published scope.

Exam Facts

• Credential earned: RVT
• Exam format: 170-question, 3-hour examination
• Passing score: 555/700

2025 Pass Rates

First-time candidates: 70%; repeat candidates: 45%; overall: 63%. This 25-percentage-point difference compares separate candidate groups; it does not measure changes in exam difficulty or the effectiveness of a study strategy.

Source: ARDMS/APCA Global Exam Performance Summary Report, 2025.

High-Yield Focus Areas

• Carotid and vertebral artery assessment
• Lower extremity arterial and venous evaluation
• Abdominal vascular Doppler assessment
• Hemodynamic principles and Doppler physics
• Venous insufficiency and DVT diagnosis

Common Mistakes to Avoid

• Misinterpreting carotid stenosis criteria and velocity ratios
• Confusing acute vs. chronic DVT characteristics
• Incorrectly applying the Bernoulli equation to stenosis assessment
• Missing significant stenosis due to improper Doppler angle
• Confusing arterial and venous waveform patterns

Study Tips

• Master the ICA stenosis velocity criteria: PSV, EDV, and ICA/CCA ratio
• Create a comparison chart of arterial vs. venous waveforms throughout the body
• Study hemodynamic principles: Bernoulli equation, Poiseuille's law, and Reynolds number
• Learn the DVT compression protocol and augmentation techniques
• Review ABI interpretation and segmental pressure measurements

Sample Question Types

Illustrative prompts, not actual registry questions.

• An ICA PSV of 250 cm/s with EDV of 100 cm/s corresponds to what degree of stenosis?
• What is the most reliable criterion for diagnosing acute DVT?
• A dampened arterial waveform distal to a stenosis demonstrates what change?
• What ABI value is consistent with severe peripheral arterial disease?

Key Topics

• Carotid duplex
• Vertebral artery assessment
• DVT evaluation
• Arterial duplex
• ABI and segmental pressures
• Venous insufficiency
• Abdominal aorta
• Renal artery stenosis
• Mesenteric arteries
• Hemodialysis access
• Hemodynamic principles
• Doppler physics

How to Prepare

Take specialty quizzes or a timed exam and review missed concepts using domain-level analytics. Platform question-bank inventory and mock exams are separate from official exam-format facts.

Related Specialties & Resources

Explore these related specialties when planning another registration:

• Abdomen (AB) exam prep — VT vs AB comparison
• Sonography Principles & Instrumentation (SPI) exam prep — VT vs SPI comparison
• Obstetrics & Gynecology (OB/GYN) exam prep — VT vs OB/GYN comparison

Browse the seven ARDMS specialties we cover, weigh your options on the specialty comparison hub, or read study guides on the Ultrasound Analytics blog.