What Is IR/DR?

What IR/DR Actually Means

IR/DR stands for Interventional Radiology/Diagnostic Radiology. It is a board certification administered by the American Board of Radiology (ABR) for physicians who complete integrated or independent interventional radiology training and want to be recognized in both disciplines: image-guided procedural medicine and diagnostic imaging interpretation.

The pairing matters. An interventional radiologist does not only place catheters and needles. The same physician reads cross-sectional imaging, plans access routes from CT and ultrasound, manages periprocedural care, and handles complications. The credential reflects that breadth, and the exam sequence tests it from several angles: pure image interpretation, procedural decision-making, and patient management.

If you are looking for shorter definitions, the site also covers the basics in What Does IR/DR Stand For? and IR/DR Meaning. This article goes further and explains how the whole credential is built.

Who Certifies It and What It Requires

The ABR certifies IR/DR. Registration and exam delivery run through ABR's own systems, using your myABR account and ABR's remote exam delivery and monitoring. The current guides do not establish a Pearson VUE or PSI testing-center arrangement, so be wary of third-party pages that claim otherwise.

Training Pathways

ABR's certification page describes two main routes to eligibility:

• Integrated pathway: a clinical year followed by a five-year accredited IR residency.
• Independent pathway: a diagnostic radiology residency followed by two years of IR training, which may be reduced to one year with approved ESIR (Early Specialization in Interventional Radiology).

Beyond training, you need to pass the Core exam, hold medical licensure, and be in good professional standing. Alternative and international medical graduate pathways have their own published rules. Certification eligibility lasts six full calendar years after training; that window is about when you may sit for exams, not how long a certificate stays valid. A fuller walk-through lives in IR/DR Requirements 2026: Eligibility, Prerequisites & How to Qualify.

The Stages: Core, Computer-Based, and Oral

The credential is not a single sitting. It is a sequence, and each stage has its own format, fee, and preparation demands.

Two cautions. First, the Core figures describe the prerequisite exam and must not be added to the Certifying Exam. Second, the scored versus unscored question split is not specified in the retrieved guides for either computer-based exam, so you cannot calculate a precise number of scored items.

The Core Exam: Your Foundation

ABR's certification page lists the Core practice topics: Breast imaging; Cardiovascular imaging; Computed tomography; Gastrointestinal imaging; Genitourinary imaging; Interventional radiology; Magnetic resonance imaging; Musculoskeletal radiology; Neuroradiology; Noninterpretive skills; Nuclear radiology; Pediatric radiology; Physics; Radiography/fluoroscopy; Thoracic radiology; Ultrasound; and Radioisotope Safety Content. That is a list of practice topics, not a verified weighted blueprint, and the within-domain percentages in ABR's separate Core domain documents should never be applied to the Certifying Exam.

The Certifying Exam: Two Components

The computer-based component is predominantly multiple choice, with ABR also describing image-location and drag-and-drop item types. The oral component puts you in front of an examiner for four separate 30-minute case periods covering image interpretation, image-guided procedures, and periprocedural management. Both components are scored as a whole and separately, and both must be passed when both are required. If you are DR-certified already, the computer-based component is waived and you face the oral component for the certifying step.

What Gets Tested: A Source-Mapped Content Outline

Many sites advertise neat percentage weights for IR/DR content areas. ABR does not publish them in the materials we reviewed. What exists is a set of study guides with headings and example topics, none of which claims to be exhaustive. This site organizes them into ten content areas, but be clear about what that count is: it tallies the required module, the computer-based preparation headings, and the oral-exam categories across the two certifying components. It is not an ABR claim of ten unified, weighted exam domains. Our IR/DR Exam Domains 2026: Complete Guide to All 10 Content Areas goes deeper on each.

Why You Cannot Name a "Heaviest" Domain

No highest-weighted category can be established from public ABR documents. The four oral periods are equal in length at 30 minutes each, but equal time does not establish equal or unequal percentage weights for scoring. Anyone claiming that, say, arterial intervention is a fixed share of your score is going beyond the published evidence. The honest strategy is broad competence in every area, with extra repetition where your own practice results show gaps. One note: the computer-based guide contains an incomplete noninvasive vascular laboratory sub-bullet, so that topic should be prepared from standard references rather than from that bullet alone.

Noninterpretive Skills and Radioisotope Safety Content also apply to certifying preparation, per ABR. Candidates who treat those as "Core-only" material sometimes get surprised later.

Exam Logistics and Fees

Fees (USD, from ABR)

Fees are nonrefundable, though ABR publishes rescheduling credit rules, and no member/nonmember split is published. Annual continuing certification fees come later and are covered below. For the full budget picture, see IR/DR Certification Cost 2026: Complete Pricing Breakdown.

Remote Exam Rules You Should Rehearse

• Both certifying components are closed book.
• The computer-based exam uses one monitor and a side-view webcam, with live and recorded monitoring.
• A software calculator is supplied; personal calculators are prohibited.
• Questions you have already viewed are locked after a break, so pace your pre-break answers deliberately.
• The oral exam runs under remote webcam monitoring with examiners leading each case period.

Scheduling windows and deadlines change by year, so confirm them on ABR directly and see IR/DR Exam Dates 2026: Testing Windows, Deadlines & Scheduling for how we track them.

Scoring and Pass Rates, Read Carefully

ABR uses criterion-referenced standards. Each certifying component is scored as a whole and separately, and when both are required you must pass both. The IR oral does not offer a conditional pass.

A current numerical pass mark specific to IR/DR was not established in the sources reviewed. The 350 figure on ABR's general scoring page is an illustrative example, not a verified IR/DR cutoff, and you should not plan around it. Our IR/DR Passing Score 2026 article keeps this distinction explicit.

What the Published Pass Rates Do and Do Not Say

• 2026 first-time oral pass rate: 88% among 219 examinees.
• 2025 first-time oral pass rate: 88% among 190 examinees.
• 2026 Core first-time resident pass rate: 93% among 1,598 examinees.

These come from ABR's certification page and describe different cohorts and components. They are not an overall credential pass rate, and a separate current pass rate for the IR/DR computer-based certifying component was not found. Do not average them or present them as "the" IR/DR pass rate. For more context see IR/DR Pass Rate 2026: What the Data Shows and How Hard Is the IR/DR Exam? Complete Difficulty Guide 2026.

IR/DR Versus DR Certification

The two certifications overlap but are not interchangeable. DR certification covers diagnostic radiology broadly. IR/DR adds interventional specialization and a certifying process built around vascular, nonvascular, and patient care competencies. Practical differences that affect planning:

• An existing DR certification exempts you from the IR/DR computer-based certifying component, leaving the oral component as your certifying step.
• Do not transplant DR's four-module structure onto IR/DR. For IR/DR, ABR's certification page specifies two required modules: Essentials and fundamental IR.
• Oral preparation for IR/DR emphasizes procedures and periprocedural management, including complications, in a way pure diagnostic oral preparation does not.

The 2029 Change on the Horizon

ABR's IR/DR Certifying Exam Process Update announces a DR Oral plus IR Oral process beginning in 2029, with the current IR/DR computer-based component ending after 2028. Everything in this article applies to the retrieved 2026 guidance. If your eligibility window or training timeline places you near that transition, read ABR's announcement directly, including both the March 10 and December 12, 2025 update sections, since the later one changes timing discussed in the earlier one. Do not apply the future structure to 2026 candidates, and do not assume the old structure survives for 2029 candidates.

Where the Credential Leads: Jobs and Pay

Interventional radiologists work in academic medical centers, hospital systems, and private or hybrid radiology groups. Postings typically combine procedural work with some diagnostic reading, which is exactly what the IR/DR pairing anticipates. Our companion pages IR/DR Jobs and IR/DR Training cover the landscape from each direction.

On compensation, be cautious about averages. One concrete data point: a UC Davis Interventional Radiologist posting (JPF07749, opened September 21, 2026) lists a range of $525,000 to $575,000. That is one employer's position range, not a national average and not a measured premium attributable to the certification itself. Physician earnings also should not be conflated with technologist pay, which is a different profession entirely. For deeper discussion, see IR/DR Salary Guide 2026: Complete Earnings Analysis and Is the IR/DR Certification Worth It? Complete ROI Analysis 2026.

Keeping the Credential Active

IR/DR is maintained through continuous certification, not a fixed five- or ten-year certificate. Under ABR's Stay Certified requirements, you need:

• Unrestricted medical licensure.
• At least 75 Category 1 CME credits per rolling three years.
• The five-year assessment requirement, met through OLA or a Continuing Certification exam.
• One PQI project or qualifying activity per rolling three years.

Newly certified diplomates first meet the CME and PQI requirements in year four. The annual IR/DR Continuing Certification fee is $340.

Sequencing Your Preparation by Content Area

Because ABR does not publish domain weights, sequence by dependency rather than by supposed point value. The plan below assumes you are preparing for the 2026 certifying computer-based component and then the oral. Adjust if you are DR-certified and heading straight to the oral. A broader plan is in the IR/DR Study Guide 2026: How to Pass on Your First Attempt, and a quick-reference companion is the IR/DR Cheat Sheet 2026.

Frequently Asked Questions