What Is the CRES Certification?

What the Certified Radiology Equipment Specialist credential means, who it is for, and how it differs from general biomed certification

If you work around:

Published August 28, 2026 · Revised September 6, 2026

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What Does CRES Stand For?

CRES stands for Certified Radiology Equipment Specialist. It is AAMI's imaging-focused certification for HTM professionals whose work spans imaging equipment, electromechanical systems, computers, networks, and healthcare software such as PACS and DICOM-connected systems.

The letters after a person's name show that the individual met the certification requirements and passed the exam; they do not authorize work beyond employer policy, licensing rules, or manufacturer training. Imaging service can involve high voltage, radiation-producing equipment, powerful magnets, and modality-specific calibration, so the credential should be understood as evidence of broad knowledge rather than a substitute for system-specific qualification.

Who Is CRES Designed For?

AAMI describes CRES candidates as HTM professionals with experience across medical imaging modalities, electromechanical systems, computers, networks, and software used in healthcare.

Typical roles may include:

What Equipment Does CRES Relate To?

The certification is associated with imaging modalities such as:

The exact exam scope is broader than simply knowing how an X-ray tube works.

Imaging Equipment Is Its Own Specialty

General BMET work may include:

Imaging equipment adds systems involving:

That requires a different depth of knowledge.

CRES vs CBET

CBET is a broad biomedical equipment certification.

CRES is specialized toward imaging.

A simplified comparison is:

CBET

Broad HTM equipment knowledge.

CRES

Imaging-focused HTM knowledge.

CRES Is Not Simply an Advanced CBET

You do not necessarily have to earn CBET first.

They are separate certification tracks.

The right one depends on the type of work you perform.

Current CRES Eligibility

As of August 2026, AAMI lists three general pathways for full CRES eligibility:

Path 1

Associate degree or higher in an electronics, technology, or science program

+

Two years of full-time BMET work experience.

Path 2

Completion of a U.S. military biomedical equipment technology program

+

Two years of full-time BMET work experience.

Path 3

Four years of full-time BMET work experience.

CRES also has an additional specialty-experience requirement.

Imaging Experience Requirement

For full CRES certification, AAMI currently requires imaging-specialty experience to represent at least:

40% of work experience during the previous two years

or:

25% of work experience during the previous five years.

That requirement separates CRES from a general BMET credential.

Why Specialty Experience Matters

Someone who has spent four years servicing:

may have excellent BMET experience.

But that alone does not provide meaningful imaging specialization.

CRES is intended to reflect experience in the designated specialty.

Candidate Status

Like CBET, CRES currently has a candidate-status pathway.

This allows some applicants to take the exam before satisfying all requirements for full certification.

A successful candidate currently has:

Five years

to satisfy the requirements for full certification.

Candidate Minimums

AAMI currently lists candidate-status eligibility based on meeting at least one of these:

Always verify your specific eligibility before applying.

What Does the CRES Exam Cover?

The current exam outline includes several major domains.

These include:

The weighting is tailored toward imaging work.

Anatomy and Physiology

Imaging specialists need to understand enough anatomy to relate:

to the equipment being used.

You do not need to become a radiologist.

But knowing what the system is trying to image matters.

Electronics

Imaging equipment can involve significantly more electrical power than many bedside devices.

Relevant concepts include:

High-Voltage Systems

X-ray equipment may generate extremely high voltages.

This changes:

compared with many lower-power devices.

Imaging Technology

A CRES candidate should understand the principles behind systems such as:

and other imaging modalities included in the current content outline.

X-Ray Generation

At a basic level:

High voltage accelerates electrons

↓

Electrons strike a target

↓

X-rays are produced

That process involves:

Detector Systems

Modern imaging systems may use:

The image chain does not end at the X-ray tube.

Imaging Computers

Modern imaging equipment relies heavily on:

A system may have perfectly functional mechanical hardware and still be unusable because of a computer or software problem.

Healthcare IT

Imaging equipment is deeply connected to healthcare IT.

Important concepts include:

PACS

PACS stands for:

Picture Archiving and Communication System.

It stores and distributes medical images.

A scanner may produce images correctly but still fail to:

them downstream.

DICOM

DICOM is the major standard used for medical imaging communication.

An imaging specialist should understand concepts such as:

Equipment vs Network

Suppose:

CT scans correctly.

Images appear locally.

Images do not reach PACS.

That is not automatically a CT hardware failure.

Follow the data path.

Problem Solving

AAMI currently places significant emphasis on imaging troubleshooting and problem solving.

This includes:

Imaging Systems Are Large Systems

A single imaging system may involve:

Good troubleshooting means determining:

Which part of the system failed?

Safety

Safety is particularly important in imaging.

Depending on modality, hazards may include:

Radiation Safety

For X-ray-based modalities, understand concepts such as:

You are not simply repairing electronics.

You are working around systems that intentionally generate radiation.

MRI Safety

MRI introduces an entirely different hazard.

The static magnetic field can create serious projectile risk.

MRI safety is not something to improvise.

Follow facility and manufacturer procedures.

Ultrasound

Ultrasound does not use ionizing radiation.

Its troubleshooting may involve:

That illustrates how broad imaging technology is.

What Test Equipment Might Imaging Specialists Use?

Depending on modality and service scope, equipment may include:

The exact tools depend heavily on modality and manufacturer.

Imaging Calibration

Imaging systems may require tests involving:

These are not the same as a simple bedside-device PM.

CRES Exam Format

As of August 2026, AAMI lists the CRES exam as:

165 multiple-choice questions

with a:

Three-hour time limit

and the exam is closed book.

Certification Does Not Replace OEM Training

This is important.

A CRES credential does not automatically mean:

Authorized to service every CT or MRI system.

Imaging equipment often requires significant manufacturer-specific training.

Example

Understanding CT fundamentals does not mean you automatically know the service architecture of every:

scanner.

CRES + OEM Training

These credentials can complement each other.

CRES may demonstrate broad imaging knowledge.

OEM training may provide deep product-specific knowledge.

CRES + Experience

Experience remains critical.

Imaging systems can be complex enough that knowing:

How this particular scanner normally behaves

is extremely valuable.

Who Might Benefit Most From CRES?

CRES may make sense for someone whose career is centered around:

Who Might Prefer CBET?

A technician whose work is mostly:

may find CBET better aligned with their day-to-day role.

Can You Hold Both?

Yes.

Because the credentials represent different areas of professional knowledge, someone working broadly across HTM may pursue more than one certification.

What Did You Actually Prove?

If someone holds CRES, you proved:

They satisfied the certification requirements and passed a standardized imaging-focused examination.

You did not prove:

They are factory-trained on every imaging system.

You did not prove:

They can repair every MRI or CT failure without escalation.

But it does provide evidence of broad knowledge and experience within the imaging specialty.

A Useful Decision Framework

Ask:

Do I regularly work on imaging systems?

Is imaging a major part of my career?

Do I want to specialize further in radiology equipment?

Would my employer value the credential?

If yes:

CRES may be worth considering.

Final Thoughts

CRES is the imaging-specialty side of HTM certification.

Think:

Medical Imaging

+

Electronics

+

Troubleshooting

+

Networking

+

Safety.

It is particularly relevant for biomeds who have moved beyond general equipment into:

But certification does not replace hands-on experience or manufacturer-specific training.

It provides a professional benchmark for the broader imaging knowledge expected of a radiology equipment specialist.

— Jake

Important Note

This article reflects AAMI's publicly posted CRES information reviewed in August 2026. Certification eligibility, specialty-experience requirements, examination content, fees, and testing procedures can change. Verify current requirements directly with AAMI before applying.

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