RTM Certification

What the RTM Certification Actually Is

On this site, RTM stands for Registered Technologist - Mammography. It refers to the mammography credential issued by the American Registry of Radiologic Technologists (ARRT). Officially, ARRT names the discipline Mammography (M); "RTM" is the abbreviation we use here for convenience, not ARRT's own designation. If you are new to the terminology, our explainers on what RTM certification is and what RTM stands for cover the naming in more detail.

The credential is a postprimary certification. That means it is not an entry point into radiologic technology. You earn it after you already hold ARRT certification and registration in Radiography. Think of it as a specialty layer: it documents that a radiographer has completed targeted education, logged supervised mammography experience, and passed a computer-based examination focused on breast imaging.

For technologists, the practical significance is straightforward. Breast imaging facilities, hospital breast centers, and screening programs look for radiographers who can demonstrate competence in mammographic positioning, quality control, and patient interaction in a regulated environment. If you want to see how the credential connects to employment, the overview of RTM jobs and the ROI analysis are good companions to this article.

Who Can Sit for the Exam

ARRT's postprimary handbook sets out a layered set of eligibility conditions. All of them must be satisfied before you can test, and the education and clinical pieces are tied to a rolling 24-month window, so timing matters.

The structured education requirement is where many candidates stumble. It is not enough to accumulate 16 hours of general breast-imaging continuing education; the hours must be structured to touch every major content category at least once. Before you purchase any coursework, compare its content outline against the issuer's structured education document and confirm that each category is represented. Our RTM requirements guide walks through the full eligibility checklist step by step.

The Clinical Experience Ledger

The clinical requirements are the most distinctive part of this credential, and they are far more specific than a generic "complete supervised hours" rule. ARRT expects a documented body of hands-on work, verified by qualified individuals.

What You Must Document

• MQSA compliance first. You must be in compliance with the Mammography Quality Standards Act before performing any procedure that will count toward the requirements.
• 75 independent patient examinations. You must independently perform mammographic imaging on 75 patients. Phantom or simulated substitutions do not count.
• Nine quality-control activities. All nine prescribed QC activities must be completed at their required repetition counts.
• Image evaluation. You must review at least 10 mammography cases with an MQSA-qualified interpreting physician.
• Five electives. At least five elective procedures must be completed through observation, assistance, or participation.

Logging Rules That Trip People Up

A maximum of 16 mammographic procedures may be logged per day, counting mammograms, QC, image evaluation, and electives together. QC documentation is also limited to one submission per day per test, so you cannot compress a QC requirement into a single afternoon. This effectively forces your clinical work to be spread over time.

You must be physically present for the examinations and procedures you log, but a qualified clinical verifier does not need to watch you work directly and may verify remotely. For the image evaluation component, the issuer permits a HIPAA-compliant virtual meeting with a remote interpreting physician, as long as you review the same images on a local monitor. In-person review is recommended where it is practical.

Exam Format and Testing Day

The exam is computer-based and delivered through Pearson VUE test centers. It is closed book. Here is how the structure breaks down:

The 30 pilot questions are indistinguishable from scored items, so you should treat every question as though it counts. Most items are single-best-answer multiple choice, but ARRT also describes alternative formats, including multiple-response and ordered-response items, and image-based questions. Because mammography is a visually driven discipline, expect to interpret images, not just recall facts.

On-screen calculators, both basic and scientific, are available during the exam, and Pearson can supply a basic four-function calculator on request. Personal calculators are prohibited. You must answer each question before moving on, but you can flag items and return to them. That flag-and-review feature is worth using: answer everything on a first pass, then spend leftover time on the flagged items.

For a deeper look at the experience from the candidate's side, see how hard the RTM exam is, and for scheduling logistics see RTM exam dates and testing windows.

How the Blueprint Divides the Scored Questions

The controlling document is ARRT's Mammography Examination Content Specifications (board approved July 2024, effective September 1, 2025). It divides the 115 scored questions across three major categories. ARRT publishes these as question counts, so we report them as counts rather than converting them into percentages the issuer does not state.

Procedures is plainly the heavyweight. Within it, the issuer allocates 26 questions to Anatomy, Physiology, and Pathology and 39 to Mammographic Positioning and Procedures. In other words, positioning and procedural knowledge alone represents a larger share of the exam than Patient Care and Image Production combined would suggest at a glance.

For a domain-by-domain breakdown with study priorities, read our complete guide to the RTM exam domains.

Scoring, Attempts, and Pass-Rate Context

ARRT reports results on a scaled range of 1 to 99, and the passing score is 75. This is a scaled score, not a raw percentage. Earning a 75 does not mean you answered 75% of questions correctly; the scaling process accounts for differences in form difficulty. Our passing score explainer covers how to interpret your report.

You have three examination attempts within three years of the opening of your initial examination window. That makes the first attempt valuable, but it is not a one-shot situation.

Reading the Pass-Rate Numbers Correctly

The ARRT Annual Exam Report for 2025 offers two figures that describe different groups of candidates, and they should not be conflated:

• The full-year first-attempt summary reports 91% passing (rounded) among 1,865 candidates. This spans the September blueprint change.
• The revised-exam first-time cohort for September 1 through December 31, 2025 had a 90.3% pass rate (n=567).

The 90.3% figure is not the full-calendar-year rate; it covers only candidates tested on the revised blueprint. Both numbers point to a high first-attempt pass rate, but remember that this population has already cleared substantial prerequisites: current Radiography certification, structured education, and documented clinical work. The pass rate reflects a prepared group. For more context, see our RTM pass rate analysis.

Fees and Registration Mechanics

The fee structure is simple. The initial application costs $225 USD, and an examination reapplication costs $200 USD if you need another attempt. The annual renewal fee is $65 regardless of how many ARRT credentials you hold. Our full cost breakdown adds the surrounding expenses, such as structured education, to give you a realistic total.

Always confirm current figures on ARRT's fee page before you apply, since the issuer can revise them. The numbers above reflect sources reviewed October 14, 2026.

Sequencing Your Preparation by Domain

Because Procedures dominates the blueprint and your clinical work reinforces positioning daily, a sensible sequence front-loads the knowledge you can't gain on the clinic floor. Here is one way to align study with the exam's weighting, assuming you are already logging clinical hours.

Adjust the pacing to your own schedule and experience. For a fuller plan, see our RTM study guide, and keep the RTM cheat sheet handy for last-week review. When you are ready to test your recall under realistic conditions, our practice tests mirror the multiple-choice and image-style items you will see.

Keeping the Credential Active

Earning the credential is not the end of the process. ARRT requires ongoing maintenance on three fronts:

• Annual renewal at $65, regardless of how many ARRT credentials you hold.
• Continuing education of 24 approved CE credits per two-year biennium. This requirement is per biennium, not per credential, so holding multiple credentials does not multiply it.
• Ethics compliance, which continues throughout your certification.

Credentials earned on or after January 1, 2011 also fall under Continuing Qualifications Requirements (CQR) every 10 years. CQR involves 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.

Frequently Asked Questions