- The Short Answer: What the Letters Spell Out
- RTVI vs. ARRT's Official Designation
- Who Issues the Credential and Where You Test
- What the Exam Actually Covers
- How You Qualify: Education and Procedure Repetitions
- Exam Format, Fees and Scoring
- Credentials Easily Confused With This One
- Keeping the Credential Active
- Sequencing Your Study Around the Blueprint
- Frequently Asked Questions
- RTVI stands for Registered Technologist - Vascular-Interventional Radiography, a postprimary credential awarded through the American Registry of Radiologic...
- ARRT's own discipline name is Vascular Interventional Radiography (VI); "RTVI" is this site's abbreviation, not ARRT's designation.
- The exam has 210 questions, 160 scored and 50 unscored pilot items, with Procedures carrying 112 of the 160 scored questions.
- Eligibility requires current ARRT Radiography certification plus at least 200 verified procedure repetitions within a 24-month window.
The Short Answer: What the Letters Spell Out
RTVI stands for Registered Technologist - Vascular-Interventional Radiography. It names a postprimary credential in the field of vascular and interventional radiography, earned by radiologic technologists who already hold a primary credential and want formal recognition of their work in the angiography and interventional suite.
Each part of the phrase carries meaning:
- Registered Technologist: the holder is a technologist whose certification and registration are active with the credentialing body.
- Vascular-Interventional: the scope covers diagnostic vascular imaging, image-guided interventions on blood vessels, and nonvascular interventional procedures.
- Radiography: the foundational modality. Candidates must already be certified and registered in Radiography with ARRT before they can pursue this credential.
If you want the same question approached from other angles, our related explainers cover what RTVI is, the meaning of RTVI, and the broader RTVI certification overview. This article focuses on the expansion of the acronym and the facts that make the credential distinct.
RTVI vs. ARRT's Official Designation
There is a subtle point worth getting right early, because it affects how you list the credential on a resume or badge. ARRT's official name for the discipline is Vascular Interventional Radiography, abbreviated VI. "RTVI" is the shorthand this site uses to refer to the credential. It is not a designation ARRT assigns.
This distinction also helps when you research the credential. Searching ARRT's website for "Vascular Interventional Radiography" or "VI" will take you to the authoritative content specifications, requirements and handbook. Searching for "RTVI" alone may surface unrelated material, since the same letters are used elsewhere for entirely different things.
Who Issues the Credential and Where You Test
The credential is issued by the American Registry of Radiologic Technologists (ARRT). Examinations are delivered by Pearson VUE at test centers. The exam is computer-based, so you sit at a workstation in a proctored center rather than taking a paper test.
Because the credential is postprimary, it sits on top of a foundation rather than replacing it. You do not become an interventional technologist "instead of" a radiographer; you add a specialty credential to your existing Radiography certification. That layered structure is why the eligibility rules are tied so closely to your current ARRT standing.
What the Exam Actually Covers
The controlling document is ARRT's Vascular Interventional Radiography Examination Content Specifications (board approved July 2022, effective July 1, 2023). It divides the exam into three major content categories, and the scored-question counts below come directly from that document. For a deeper walk-through, see our complete guide to all 3 RTVI content areas.
| Major Content Category | Scored Questions (of 160) |
|---|---|
| Patient Care | 22 |
| Image Production | 26 |
| Procedures | 112 |
Domain 1: Patient Care (22 scored questions)
This category covers the bedside and process side of interventional work: preparing and monitoring patients, managing the sterile environment, and responding to changes in patient status during a procedure.
- Candidates should expect scenario-style items about patient assessment and safe handling.
- Questions reward practical judgment, the kind built by working a case from start to finish.
Domain 2: Image Production (26 scored questions)
This category addresses the technical side of generating and managing images in the vascular suite. Radiation protection belongs here, not in a separate "safety" domain, so dose awareness is tested alongside equipment and image quality topics.
- Expect questions on fluoroscopic and angiographic imaging principles.
- Radiation protection for patients and staff is a recurring theme within this category.
Domain 3: Procedures (112 scored questions)
Procedures dominates the exam. Its 112 scored questions split into three subareas that mirror the clinical experience categories:
- Vascular Diagnostic Procedures: 41 questions
- Vascular Interventional Procedures: 41 questions
- Nonvascular Procedures: 30 questions
The three domain names here (Patient Care, Image Production, Procedures) are the official major examination content categories. They describe how the exam is organized, not how you must organize your studying. Our one-page RTVI cheat sheet condenses the highest-yield facts across all three.
How You Qualify: Education and Procedure Repetitions
The acronym only means something if you can earn the credential, so it helps to understand the gatekeeping. Eligibility has a structured education component and a clinical experience component. The full detail is in our RTVI requirements guide; here are the essentials.
Foundational and Educational Requirements
- Current ARRT certification and registration in Radiography.
- Compliance with ARRT ethics requirements.
- 16 hours of structured education completed within the 24 months before you apply, with at least one credit in each major content category.
One detail catches people off guard: holding Nuclear Medicine Technology or Radiation Therapy alone is not a supporting credential for Vascular Interventional Radiography. The foundation must be Radiography.
Clinical Experience Requirements
- Current Basic Life Support (BLS) certification from an ARRT-recognized provider.
- At least 200 verified procedure repetitions within the 24-month eligibility window.
- Distribution: at least 50 each in vascular diagnostic, vascular interventional and nonvascular categories, plus 50 additional repetitions from any category.
Key Takeaway
Plan your repetition log from day one. Record 5-10 repetitions per selected procedure, log no more than 10 procedures per day, and remember that you must be physically present in an active primary scrub or circulating role. Observation alone does not count.
Verification is handled by a qualified ARRT-certified and registered technologist, supervisor or interpreting physician. For postprimary credentials, verifiers do not need to directly observe your work and may verify remotely, which helps if your clinical site's staffing is spread across locations.
Exam Format, Fees and Scoring
| Item | Detail |
|---|---|
| Total questions | 210 (160 scored, 50 unscored pilot) |
| Answering time | 210 minutes |
| Appointment length | 230 minutes including tutorial, nondisclosure agreement and survey |
| Delivery | Computer-based at Pearson VUE test centers |
| Initial application fee | $225 USD |
| Examination reapplication fee | $200 USD |
| Attempts allowed | Three attempts within three years of the opening of the initial examination window |
Question Style
Most items are single-best-answer multiple choice, with possible alternative item formats and image-based questions. ARRT's handbook also describes multiple-response and ordered-response formats, so do not assume every question has exactly one selectable answer. The exam is closed book. Basic and scientific on-screen calculators are available, and Pearson can supply a basic four-function calculator on request; personal calculators are prohibited.
You must answer each item before advancing, but you can flag items and return to them. Since 50 of the 210 questions are unscored pilot items that are indistinguishable from scored ones, treat every question as if it counts.
Understanding the Passing Score
The passing score is 75 on ARRT's 1-99 scaled-score range. This is a scaled score, not a percentage of questions answered correctly. Our RTVI passing score explainer covers how scaling works and what it means for your preparation.
For context on outcomes, ARRT's Annual Exam Report - 2025 lists a first-time candidate pass rate of 61.2% in 2025 (n=454). The detail behind that figure is on our RTVI pass rate page, and if you are weighing your odds, how hard the RTVI exam is puts the number in perspective. For the full cost picture beyond the exam fee, see the RTVI certification cost breakdown.
Credentials Easily Confused With This One
Several interventional-adjacent credentials sound similar but are different pathways. Mixing them up can send you down the wrong eligibility route.
| Credential Area | How It Differs From Vascular Interventional Radiography |
|---|---|
| Cardiac Interventional Radiography | A separate ARRT postprimary discipline focused on the cardiac catheterization setting. |
| Vascular Sonography | An ultrasound-based discipline, not a fluoroscopic interventional one. |
| CCI RCIS | A credential from a different certifying organization, not ARRT. |
Keeping the Credential Active
Earning the credential is not the end of the administrative story. To stay certified and registered:
- Renew annually. The renewal fee is $65 regardless of how many ARRT credentials you hold.
- Remain in compliance with ARRT ethics requirements.
- Complete 24 approved continuing education (CE) credits per two-year biennium. This is per biennium, not per credential, so holding both Radiography and Vascular Interventional Radiography does not double the requirement.
- For credentials earned on or after January 1, 2011, complete Continuing Qualifications Requirements (CQR) every 10 years: a professional profile, a structured self-assessment and any prescribed CE. ARRT also allows you to accept the maximum CQR CE prescription instead of taking the self-assessment.
Whether the added credential is worth these ongoing obligations depends on your career goals. Our analysis of whether the RTVI certification is worth it weighs the investment, while the RTVI jobs and RTVI salary guide pages look at where the credential is used and how it relates to compensation.
Sequencing Your Study Around the Blueprint
Because the exam is so heavily weighted toward Procedures, a sensible plan front-loads that domain and uses the smaller domains as reinforcement. Here is one way to map weeks to the blueprint. For a fuller plan, see the RTVI study guide.
Vascular Diagnostic Procedures
- 41 scored questions live here, so it earns the earliest and longest block.
- Tie each procedure to the repetitions you have logged on the job.
Vascular Interventional and Nonvascular Procedures
- Another 41 and 30 scored questions respectively.
- Prioritize the nonvascular procedures you see least often at your own site.
Image Production
- Review imaging principles and radiation protection together, since both sit in this domain.
Patient Care and Full Review
- Close with Patient Care, then take timed practice sets across all three domains.
When you are ready to test yourself under realistic conditions, our RTVI practice test lets you rehearse the mix of question formats you will see on exam day. Scheduling details, including testing windows, are covered in RTVI exam dates.
Frequently Asked Questions
On this site, RTVI stands for Registered Technologist - Vascular-Interventional Radiography. It refers to the postprimary credential awarded by the American Registry of Radiologic Technologists in the Vascular Interventional Radiography discipline.
No. ARRT's official discipline name is Vascular Interventional Radiography, abbreviated VI. RTVI is the abbreviation used on this site as a convenient label, so follow ARRT's credential-listing guidance for official use.
Candidates need current ARRT certification and registration in Radiography, ethics compliance, 16 hours of structured education in the prior 24 months, current BLS certification, and at least 200 verified procedure repetitions within a 24-month window.
The exam has 210 questions, of which 160 are scored and 50 are unscored pilot questions. You have 210 minutes of answering time within a 230-minute appointment.
No. The passing score is 75 on ARRT's 1-99 scaled-score range. Scaled scores account for question difficulty, so the number of correct answers needed is not simply 75% of the questions.