- What RTM Means on This Site
- Who Issues the Credential and Who It Is For
- Eligibility: Structured Education and Clinical Experience
- How the Exam Is Built and Delivered
- The Three Content Domains
- Scoring and Pass-Rate Data
- Fees, Attempts and Application Mechanics
- Keeping the Credential Active
- Where the Credential Gets Used
- Sequencing Your Preparation by Domain
- Frequently Asked Questions
- RTM here means Registered Technologist - Mammography, an ARRT postprimary credential earned by already-certified radiographers.
- The exam has 145 questions: 115 scored and 30 unscored pilot items, with 150 minutes of answering time.
- Procedures is the largest category at 65 of 115 scored questions, split into anatomy/pathology and positioning.
- A passing score is 75 on ARRT's 1-99 scaled range, which is not the same as 75% correct.
What RTM Means on This Site
On rtmexam.com, RTM stands for Registered Technologist - Mammography. It is the site's shorthand for the mammography credential awarded by the American Registry of Radiologic Technologists (ARRT). Officially, ARRT's discipline name is simply Mammography, abbreviated (M). "RTM" is the abbreviation this site uses to refer to that credential, not a designation ARRT itself publishes.
The acronym "RTM" is shared by several unrelated credentials and terms in other fields. Everything on this page concerns only the ARRT mammography credential: its exam, its eligibility rules, its costs and its maintenance requirements. If you arrived looking for another meaning of the letters, our short explainers on RTM meaning and what RTM stands for cover the naming question directly.
Who Issues the Credential and Who It Is For
ARRT issues the credential, and Pearson VUE test centers deliver the exam. The credential is postprimary, meaning you cannot earn it as your first ARRT certification. It is an add-on for technologists who already hold ARRT certification and registration in Radiography and want to document competence in breast imaging.
That structure shapes who the typical candidate is: a working radiographer who has been doing, or is about to do, mammography under supervision, and who needs a nationally recognized credential to show for it. If you are weighing whether the investment is justified, see our analysis in Is the RTM Certification Worth It? and the broader overview at RTM certification.
Eligibility: Structured Education and Clinical Experience
Postprimary eligibility has three layers: a prerequisite credential, education, and documented clinical work. ARRT requires all of them before you can sit for the exam. Our dedicated RTM requirements guide goes deeper; here is the overview.
Prerequisites and Education
- Current ARRT certification and registration in Radiography.
- Compliance with ARRT's 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.
- Verified clinical experience completed within the corresponding 24-month eligibility window.
Clinical Experience Requirements
The clinical component is where many candidates spend the most effort. It is documented, countable work, and it must follow Mammography Quality Standards Act (MQSA) rules from the start.
What the Clinical Requirements Include
Candidates must complete and log the following under the clinical experience requirements effective September 1, 2025:
- MQSA compliance before performing any procedures that will count toward the requirements.
- Independent mammographic imaging of 75 patients, with no phantom or simulated substitutions.
- All nine prescribed quality-control activities, each at its required repetition count.
- Review of at least 10 mammography cases with an MQSA-qualified interpreting physician.
- At least five elective procedures, completed through observation, assistance or participation.
Logging Rules That Trip People Up
Several rules govern how you record work. A maximum of 16 mammographic procedures may be logged per day, counting mammograms, QC, image evaluation and electives together. QC documentation is limited to one submission per day per test, so you cannot compress repetitions into a single afternoon.
The candidate must be physically present for the examinations and procedures being logged. However, the qualified clinical verifier does not have to directly observe the work and may verify remotely. For the image evaluation component, ARRT permits a HIPAA-compliant virtual meeting with a remote interpreting physician while you review the same images on a local monitor. In-person review is recommended, but the remote option can matter if your facility lacks an on-site interpreting physician.
How the Exam Is Built and Delivered
The exam is computer-based and delivered at Pearson VUE test centers. Questions are primarily single-best-answer multiple choice. Candidates may also see alternative item formats and image-based questions, and the ARRT handbook describes multiple-response and ordered-response formats as well. Expect to be asked to look at an image or work through a sequence, not just recall a definition.
| Exam Feature | Detail |
|---|---|
| Total questions | 145 |
| Scored questions | 115 |
| Unscored pilot questions | 30 |
| Examination answering time | 150 minutes |
| Total appointment time | 170 minutes (includes tutorial, nondisclosure agreement and survey) |
| Reference materials | Closed book |
| Calculators | Basic and scientific on-screen calculators provided; Pearson can supply a basic four-function calculator on request; personal calculators prohibited |
| Navigation | Each item must be answered before advancing; answers can be flagged and revisited |
Because you must answer before advancing but can flag items to revisit, a workable pacing approach is to commit to a best answer, flag anything uncertain, and use leftover time for flagged items. With 150 minutes across 145 questions, you have a little over a minute per item on average, so image-based questions deserve a quick, structured read rather than a long stare. For a candid read on difficulty, see How Hard Is the RTM Exam?
The Three Content Domains
The exam is organized around three major content categories defined in ARRT's Mammography Examination Content Specifications (board approved July 2024, effective September 1, 2025). ARRT specifies scored-question allocations as counts, so this article keeps them as counts rather than converting them into percentages. For a deeper walk-through, see RTM Exam Domains: Complete Guide to All 3 Content Areas.
| Domain | Scored Questions (of 115) |
|---|---|
| Domain 1: Patient Care | 20 |
| Domain 2: Image Production | 30 |
| Domain 3: Procedures | 65 |
Domain 1: Patient Care (20 questions)
This category covers the technologist's responsibilities around the patient: communication, safety, ethics and the clinical context of breast imaging. Mammography involves sensitive conversations and anxious patients, so expect scenario-style questions about how to respond appropriately and professionally.
- Patient interaction, communication and professional conduct
- Patient safety and comfort during compression
- Ethical and legal responsibilities, including MQSA-related obligations
Domain 2: Image Production (30 questions)
This category addresses the technical side of making a diagnostic image: equipment, exposure, image quality and quality control. It connects directly to the nine QC activities you document during clinical experience.
- Mammography equipment and its operation
- Image acquisition and technical factors
- Image evaluation and quality control activities
Domain 3: Procedures (65 questions)
Procedures is the heart of the exam and by far the largest category. ARRT divides it into two parts: Anatomy, Physiology, and Pathology (26 questions) and Mammographic Positioning and Procedures (39 questions).
- Anatomy, Physiology, and Pathology: breast anatomy, physiology and the pathology a technologist should recognize on images
- Mammographic Positioning and Procedures: standard and supplemental positioning, and the procedures performed in mammography
Procedures accounts for more scored questions than the other two categories combined. Candidates who are strong on Patient Care and Image Production but shaky on positioning and pathology are taking the largest risk on the exam. Our RTM cheat sheet compresses the highest-yield facts into one page.
Scoring and Pass-Rate Data
What a Passing Score Means
ARRT reports results on a scaled range of 1 to 99, and the passing score is 75. That number is not 75% of questions correct. Scaled scoring adjusts for the difficulty of the particular question set you received, so the raw number of correct answers needed can vary between exam forms. Details are in our RTM passing score article.
Reading the 2025 Pass-Rate Numbers Carefully
ARRT's Annual Exam Report for 2025 offers two figures that are easy to confuse because they describe different groups of candidates:
- Full-year first-attempt summary: approximately 91% passing (rounded) among 1,865 candidates. This spans the September blueprint change.
- Revised-exam first-time cohort (September 1 to December 31, 2025): a 90.3% pass rate among 567 candidates.
One more caution: the 2025 annual report repeats legacy mammography category counts in its revised-exam table. Use that report for pass-rate statistics, and use the dedicated September 2025 content specifications for the actual blueprint, which is what the domain counts above reflect.
Fees, Attempts and Application Mechanics
| Item | Amount or Rule |
|---|---|
| Initial application | $225 USD |
| Examination reapplication | $200 USD |
| Attempt limit | Three attempts within three years of the opening of the initial examination window |
| Annual renewal | $65, regardless of how many ARRT credentials you hold |
The three-attempt, three-year limit is worth planning around. Because your eligibility depends on a 24-month window of education and clinical experience, you want your application timing to leave room for a retake if needed. Our RTM exam dates article covers scheduling, and the RTM certification cost breakdown adds the surrounding expenses that fees alone do not capture, such as education hours.
Keeping the Credential Active
Earning the credential is the first step. ARRT requires you to maintain certification and registration on an ongoing basis:
- Annual renewal: $65 per year, a single fee no matter how many ARRT credentials you hold.
- Ethics compliance: continuing adherence to ARRT's ethics requirements.
- Continuing education: 24 approved CE credits per two-year biennium. These are counted per biennium, not per credential, so one set of credits serves all of your ARRT credentials.
- Continuing Qualifications Requirements (CQR): credentials earned on or after January 1, 2011 require CQR every 10 years. This 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.
Key Takeaway
Because CE credits and the renewal fee are shared across your ARRT credentials, adding mammography does not double your ongoing maintenance burden. Choose CE that serves both your radiography and mammography practice.
Where the Credential Gets Used
Mammography technologists work wherever breast imaging is performed. Common settings include hospital imaging departments, outpatient radiology centers, dedicated breast centers and screening programs. These facilities operate under MQSA, which is why the credential's clinical requirements emphasize MQSA compliance from the first logged procedure.
Employers value the credential because it documents that a technologist has completed structured education, supervised clinical work and an independent exam in a specialty where positioning precision and quality control directly affect diagnostic value. We avoid quoting specific pay figures here; see the RTM salary guide for earnings context and RTM jobs for the kinds of roles that ask for it.
Sequencing Your Preparation by Domain
Rather than a generic study plan, let the exam's weighting drive your calendar. Procedures holds 65 of 115 scored questions, so it deserves the largest share of your hours and should not be left for the final days. The outline below assumes you are studying alongside clinical work; adjust the number of weeks to your own schedule. Our RTM study guide offers a fuller approach.
Procedures: Anatomy, Physiology, and Pathology
- Review breast anatomy and physiology, then the pathology you should recognize on images (26 questions)
- Pair each topic with image-based practice, since pathology items often rely on pictures
Procedures: Positioning and Procedures
- Work through standard and supplemental positioning, the single largest block at 39 questions
- Practice identifying positioning errors from described or pictured images
Image Production
- Review equipment, technical factors and the QC activities you logged during clinical experience
- Revisit image evaluation criteria (30 questions)
Patient Care and Full Review
- Cover patient interaction, safety and ethics (20 questions)
- Finish with timed mixed sets under the 150-minute limit, flagging and revisiting items as you would on test day
To pressure-test each stage, use the full-length timed sets on the RTM Exam Prep practice test site, and return to the main practice tests after each domain to confirm that your weak areas are actually shrinking.
Frequently Asked Questions
RTM means Registered Technologist - Mammography, this site's shorthand for the ARRT Mammography (M) postprimary credential. ARRT's own discipline name is Mammography; RTM is our abbreviation, not an ARRT designation.
No. The credential is postprimary, so you need current ARRT certification and registration in Radiography, along with ethics compliance, 16 hours of structured education and the required clinical experience, before you can apply.
The exam has 145 questions, of which 115 are scored and 30 are unscored pilot items. You get 150 minutes of answering time within a 170-minute appointment that includes the tutorial, nondisclosure agreement and survey.
No. ARRT uses a scaled score range of 1 to 99, and 75 is the passing scaled score. The number of correct answers needed can differ between exam forms because scaling accounts for question difficulty.
You have three attempts within three years of the opening of your initial examination window. The first application costs $225 USD and each examination reapplication costs $200 USD, so plan your timing and preparation with that limit in mind.
If you are still orienting yourself, our companion explainers What Is RTM Certification? and RTM training pick up where this overview leaves off, and the RTM Exam Prep practice tests are the quickest way to see how the question formats feel.