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Key Facts: VS Exam
215
Total Questions
175 scored + 50 pilot
3h 45m
Exam Time
ARRT
$225
Application Fee
ARRT
75
Passing Scaled Score
ARRT
ARRT VS (Vascular Sonography) is a post-primary credential. 215 items (175 scored + 50 pilot), 3h45m, scaled passing 75. $225 fee. Eligibility: associate degree + ARRT-approved vascular sonography education. Master cerebrovascular duplex (NASCET/SRU criteria), ABI calculation, DVT compression protocol, and abdominal vascular Doppler thresholds.
Sample VS Practice Questions
Try these sample questions to review concepts for the VS exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.
1What is the maximum recommended Doppler angle when measuring peak systolic velocity in a peripheral vessel?
2Which infection control practice is required before scanning every vascular patient?
3When color Doppler shows aliasing in a normal vessel, the FIRST adjustment to make is to:
4ALARA principle in vascular sonography refers to:
5Which transducer frequency is BEST suited for evaluating a deep femoral vein in an obese patient?
6A patient becomes diaphoretic and hypotensive during a carotid duplex. The MOST appropriate first action is to:
7The mechanical index (MI) primarily indicates the risk of:
8Spectral Doppler sample volume should typically be placed:
9Spectral broadening on a Doppler waveform is MOST consistent with:
10When time-gain compensation (TGC) is incorrectly set with too much gain at depth, the image will show:
About the VS Exam
ARRT post-primary credential for vascular ultrasound technologists. Validates expertise in cerebrovascular duplex (carotid, vertebral, transcranial), peripheral arterial (ABI, segmental pressures, waveforms, bypass surveillance), peripheral venous (DVT compression, reflux, vein mapping), abdominal vascular (aorta, renal, mesenteric, portal, TIPS), and accreditation/quality standards.
Exam sponsor: ARRT. The requirements and fees below concern the certification or admission exam, separate from our free practice resources.
Questions
215 questions
Time Limit
3 hours 45 minutes
Passing Score
Scaled 75
Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.
Official sources
Our practice resources: topics covered
We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.
Patient Care, Safety, Image Production
Patient assessment, ALARA, transducer selection
Cerebrovascular
Carotid duplex (PSV/EDV/ratio NASCET), vertebral, TCD
Peripheral Arterial
ABI, TBI, segmental pressures, waveform analysis, bypass surveillance
Peripheral Venous
DVT compression US, reflux >0.5s SFJ, vein mapping
Abdominal Vascular
AAA, renal artery (PSV >180 / RAR >3.5), mesenteric, portal, TIPS
Quality, Accreditation, Documentation
ICAVL/IAC, technologist credentialing, reporting
Preparing for the VS Exam
What You Need to Know
- Passing score: Scaled 75
- Exam length: 215 questions
- Time limit: 3 hours 45 minutes
- Exam / certification fees: $225 Official sources
Using Our Practice Resources
- Work through all 100 available questions
- Review every answer and explanation
- Track weak areas and revisit them
- Use our AI tutor for tough concepts
VS: Suggested Study Strategy
Frequently Asked Questions
What's the difference between ARRT VS and ARDMS RVT?
Both credential vascular sonographers but represent different professional bodies. ARRT VS (R.T.) is for radiologic technologists who specialize in vascular ultrasound — ARRT post-primary. ARDMS RVT is the diagnostic medical sonography credential for vascular technology — separate prerequisite (SPI). Many vascular technologists hold both.
What ICA stenosis criteria are tested?
SRU 2003 consensus criteria for ICA stenosis: <50% = normal/mild (PSV <125 cm/s, ICA/CCA ratio <2.0); 50-69% = moderate (PSV 125-230, ratio 2.0-4.0, EDV 40-100); ≥70% = severe (PSV >230, ratio >4.0, EDV >100); near-occlusion (markedly narrowed lumen with low velocities); occlusion (no flow). Measure PSV from same gate position throughout. NASCET vs ECST methods differ in measuring stenosis %.
How do I calculate ABI?
Ankle-Brachial Index = highest ankle pressure (PT or DP) ÷ highest brachial pressure (R or L). Normal ABI >1.0; mild PAD 0.71-0.99; moderate 0.41-0.70; severe ≤0.40. ABI >1.40 = noncompressible (often diabetes/CKD calcified vessels) — use TBI (Toe-Brachial Index) instead, with normal TBI ≥0.7.
How should I study for ARRT VS?
Plan 60-100 hours over 8-12 weeks. Focus on cerebrovascular (25%), peripheral arterial (20%), and peripheral venous (20%) — together 65% of exam. Master SRU ICA criteria, ABI calculation, DVT compression, and abdominal Doppler thresholds. Use ICAVL/IAC accreditation standards as a reference.