How can I specialize in a field like mammography or CT as a radiologic technologist?

Yes. The typical path is to become a radiologic technologist in radiography first, then add a specialty credential.

The basic career path

1. Complete an accredited radiography program

• Usually an associate degree program, often about two years.
• You'll study anatomy, positioning, radiation protection, patient care, image production, and radiographic procedures.
• ARRT requires an associate degree or higher plus an ARRT-approved educational program for the primary radiography pathway.

2. Become an R.T.(R)

• After your education and clinical training, you take the ARRT radiography certification exam.
• Depending on your state, you'll also need a state license.

3. Work in radiography and build clinical experience

• This is where you can start figuring out which specialty fits you.
• Hospitals and imaging centers may give you opportunities to cross-train in CT, mammography, MRI, interventional imaging, etc.

4. Add a specialty credential

• ARRT calls this the postprimary pathway.
• Current postprimary options include CT, mammography, MRI, bone densitometry, vascular/interventional imaging, and others.

CT

For CT, you'll generally start with your radiography credential and then complete the additional structured education, clinical experience, and ARRT CT exam requirements. Radiography is one of the accepted supporting credentials for CT.

CT is a good choice if you like:

• Trauma/emergency medicine
• Anatomy and pathology
• Fast-paced hospital work
• Technology and computers
• IV contrast and protocols
• Working with many different types of patients

Mammography

Mammography also uses the postprimary pathway, but ARRT specifically requires you to already be certified and registered in Radiography as the supporting discipline. You then complete the required structured education, clinical experience, and exam.

Mammography may suit you if you prefer:

• More specialized patient care
• Breast imaging
• Developing strong positioning/image-quality skills
• Building relationships with patients
• A somewhat more focused clinical environment

You don't necessarily need another degree

This is an important point: you generally don't go back to college for another two-year degree just to become a CT or mammography technologist.

Once you're an R.T.(R), the specialty is generally an additional credential. ARRT's postprimary pathway requires the supporting credential, structured education, documented clinical procedures, ethics requirements, and the specialty examination.

For example:

Radiography program → R.T.(R) → work/cross-train → CT education + clinical requirements → ARRT CT → R.T.(R)(CT)

or

Radiography program → R.T.(R) → mammography education + clinical requirements → ARRT Mammography → R.T.(R)(M)

Which specialty should you choose?

You don't necessarily have to decide before becoming a radiologic technologist. In fact, getting exposure to different departments during clinicals and your first job can make the decision much easier.

A rough comparison:

One other option is to become multimodality—for example, R.T.(R)(CT) and eventually MRI—rather than limiting yourself to one specialty.

If you're currently considering radiologic technology as a career, I can also break down what the schooling is like, how much CT vs. mammography technologists make, and which specialty tends to have the best job opportunities.

Specializing in a modality like Computed Tomography (CT) or Mammography as a radiologic technologist typically means going through the ARRT Postprimary Pathway.

Here are the key steps required to earn your advanced credentials:

Are you currently leaning more toward CT or Mammography , and would you like to know about the specific clinical requirements or exam topics for that choice?

You can specialize in computed tomography (CT) or mammography by pursuing a post-primary certification through the American Registry of Radiologic Technologists (ARRT). Because you are already a registered radiologic technologist, you do not need to go back to school for a new degree. Instead, you will follow a specific pathway involving structured education, hands-on clinical experience, and a credentialing exam.

The specific steps to transition into CT or mammography include the following:

1. Maintain Your Foundational Credential

You must hold a valid, active ARRT supporting credential in Radiography, RT(R), to be eligible for either specialty path.

2. Complete Structured Education

The ARRT requires you to complete at least 16 credits of structured education specific to your chosen modality. These courses can be taken online through platforms like the American Society of Radiologic Technologists (ASRT) or specialized training organizations.

• For Mammography : Your coursework must include breast anatomy, physiology, positioning, and quality control. If you plan to work with modern 3D equipment, ensure your training includes at least 8 hours of digital breast tomosynthesis.
• For CT : Your coursework will focus on cross-sectional anatomy, CT physics, radiation safety, and contrast media protocols.

3. Complete and Log Clinical Experience

You must perform and document a specific number of hands-on procedures under the supervision of a certified technologist or radiologist. Many techs accomplish this via on-the-job cross-training at their current place of employment, while others find clinical placement through formal certificate programs.

• Mammography Requirements : You must perform a minimum of 100 mammograms, review at least 10 images with a radiologist, and observe quality control procedures.
• CT Requirements : You must document a minimum of 125 procedures across various categories, including head, spine, chest, and abdominal scans.

4. Pass the ARRT Post-Primary Exam

Once your education and clinical hours are approved by the ARRT, you will sit for the official registry exam for that modality. Passing earns you your advanced credentials, such as RT(R)(M) for Mammography or RT(R)(CT) for Computed Tomography.

5. Check State-Specific Licenses

While the ARRT is the national standard, some states require a separate state license to practice advanced modalities. Always check with your state’s radiologic health branch to ensure compliance.

If you are trying to choose between the two fields, let me know:

• Do you prefer a fast-paced environment (like ER trauma in CT) or a clinic schedule (like Mammography)?
• Does your current employer offer on-the-job cross-training?
• Are you interested in other modalities like MRI or ultrasound?

Absolutely. If you’re becoming a radiologic technologist (R.T.), specializing in an area such as CT, mammography, MRI, or interventional radiology is usually something you do after becoming certified in radiography.

The process is often called a postprimary credential through the American Registry of Radiologic Technologists (ARRT).

The basic path

1. Complete an accredited radiologic technology program

• Earn your radiography education/degree.
• Complete clinical training.
• Take the ARRT Radiography exam and become R.T.(R).

2. Work in radiography and choose your specialty

• You don't necessarily have to work for years before specializing, but you'll need the appropriate clinical experience for the specialty.
• Talk with your employer about cross-training opportunities in CT, mammography, MRI, etc.

3. Complete specialty-specific education

• ARRT's postprimary pathway generally requires 16 hours of structured education, along with specialty-specific clinical experience.

4. Get supervised clinical experience

• You'll perform and document specific procedures required by ARRT.
• The requirements vary significantly by specialty.

5. Take the specialty ARRT exam

• Once you've satisfied the education and clinical requirements, you can apply and take the exam.
• Passing gives you the additional credential.

For example: CT

If you become R.T.(R) and want to move into CT, ARRT currently allows radiography as one of the supporting credentials for CT. You would complete the required structured education and clinical experience, then pass the CT examination.

CT is a particularly natural progression from radiography because you'll already have a strong foundation in radiation safety, anatomy, positioning, image production, and patient care.

You might eventually have credentials such as:

R.T.(R), R.T.(CT)

You could then work primarily as a CT technologist in a hospital or outpatient imaging center.

For mammography

Mammography is also a postprimary ARRT credential, but there's an important difference: you must first be certified and registered in Radiography to pursue ARRT Mammography.

You'll complete the required education and clinical experience and then take the Mammography exam.

Mammography also involves federal MQSA requirements. ARRT's clinical requirements include supervised mammography experience, so you'll generally need to find a facility willing to train you in the modality.

Your credentials could become:

R.T.(R), R.T.(M)

Which specialty might fit you?

ARRT currently offers postprimary credentials in areas including CT, mammography, MRI, bone densitometry, vascular/interventional radiography, and breast sonography.

If you're just starting radiologic technology

I would not worry too much about choosing your specialty immediately. Your best first goal is:

Radiologic Technology program → R.T.(R) → gain experience → cross-train → specialty credential

During your clinical rotations, pay attention to which departments you actually enjoy. You may discover that you love CT even if you originally thought you wanted mammography—or vice versa.

If you're considering CT vs. mammography specifically, I can also break down the salary potential, work schedule, stress level, patient interaction, schooling, and career opportunities for each.

Absolutely. As a radiologic technologist, you can specialize after becoming a radiographer by earning an additional credential in an imaging modality such as CT, mammography, MRI, or others.

The main organization you'll encounter in the U.S. is the American Registry of Radiologic Technologists (ARRT).

The typical path

1. Become an ARRT-registered radiologic technologist (R.T.)

Usually, you first complete an accredited radiography program, pass the ARRT radiography exam, and become R.T.(R).

2. Choose your specialty

Two common choices are:

• CT (Computed Tomography) — hospitals, trauma/emergency imaging, outpatient imaging, contrast-enhanced studies, etc.
• Mammography — breast screening and diagnostic imaging, with a strong emphasis on patient communication and positioning.

ARRT currently offers postprimary credentials including CT, mammography, MRI, bone densitometry, and several interventional/sonography specialties.

3. Get the required education and clinical experience

For an ARRT postprimary credential, you'll generally need:

• An appropriate supporting ARRT credential
• 16 hours of structured education
• Documented clinical experience in the specialty
• Compliance with ARRT ethics requirements
• Passing the specialty examination

The clinical experience has to be documented and verified, and ARRT has specific procedure requirements for each specialty.

CT vs. mammography

CT is probably the more straightforward choice if you enjoy:

• Emergency/trauma patients
• Anatomy and pathology
• Technology and equipment
• IV contrast and protocols
• Working in a hospital environment
• A faster-paced environment

For CT, ARRT currently requires you to already be credentialed in an approved supporting discipline—Radiography, Nuclear Medicine Technology, or Radiation Therapy—before pursuing the CT postprimary credential.

Mammography may be a better fit if you enjoy:

• One-on-one patient interaction
• Breast anatomy/pathology
• Screening and diagnostic imaging
• A more specialized outpatient/clinic environment
• Building trust with patients during an uncomfortable or stressful exam

For mammography, ARRT(R) is the required supporting credential, followed by the mammography education, clinical experience, and exam requirements.

One important thing

You don't necessarily have to go back to college for an entirely new degree to specialize. Postprimary certification is specifically designed for already-credentialed technologists who want to add another specialty.

A common career progression looks like:

Radiography program → ARRT(R) → work as an X-ray technologist → cross-train in CT or mammography → complete ARRT requirements → pass specialty exam → ARRT(R)(CT) or ARRT(R)(M)

If you're currently in radiology school or considering enrolling, I can also explain how long it typically takes to go from starting radiography school to becoming a CT or mammography technologist, and which specialty tends to pay more.

Specializing in Mammography or Computed Tomography (CT) as a registered radiologic technologist typically happens through the American Registry of Radiologic Technologists (ARRT) Postprimary Eligibility Pathway.

The process involves three core components for both fields: structured education, clinical experience (competency tracking) , and a registry examination.

Step 1: Meet the Prerequisites

• For CT: You must already be certified and registered with the ARRT in Radiography, Nuclear Medicine Technology, or Radiation Therapy (or registered with the NMTCB for nuclear medicine).
• For Mammography: You must be certified and registered with the ARRT in Radiography.

Step 2: Fulfill Structured Education

You must complete a designated number of educational contact hours approved by the ARRT that focus specifically on the modality's physics, equipment, cross-sectional anatomy, and safety protocols.

• Computed Tomography: Requires 16 category A continuing education (CE) or structured education credits covering specific content distribution (patient care, safety, image production, and procedures).
• Mammography: Requires 40 hours of specific training to satisfy both ARRT and federal Mammography Quality Standards Act (MQSA) guidelines. This must include comprehensive instruction on breast anatomy, positioning, compression, quality control, and specialized modalities like digital breast tomosynthesis (3D mammo).

Step 3: Complete Clinical Experience Requirements

You must log and verify a set number of hands-on repetitions and specific procedures working under an approved supervisor (such as a qualified radiologist or registered tech in that specialty).

• Computed Tomography: Document and verify 125 specific clinical CT procedures (subject to daily limits on procedure tracking).
• Mammography: Perform a minimum of 25 supervised mammographic examinations as part of your initial training, complete a total clinical requirement of 75 patient evaluations/examinations , and conduct a case review of at least 10 mammographic exams with an interpreting physician.

Step 4: Apply and Pass the Registry Exam

Once your structured education and clinical documentation are accepted and verified through the ARRT application portal , you are cleared to schedule and take the national postprimary certification exam for either CT or Mammography.

Step 5: Maintain State and Federal Compliance

• State Licensing: Check your specific state health department regulations, as some states require separate or additional state-level permits or exams (e.g., California has distinct state mammography rules).
• Continuing Education / Experience:
  • CT: Maintain biennial CE requirements as mandated by the ARRT.
  • Mammography: Under MQSA guidelines, you must maintain continuing education (15 CE credits every 36 months) and a continuing experience requirement (performing at least 200 mammograms every 24 months) to legally perform scans independently.

Are you currently leaning more toward Mammography or CT , and does your current employer offer cross-training opportunities?

Specializing in a modality like Computed Tomography (CT) or Mammography as a registered radiologic technologist involves the postprimary eligibility pathway through the American Registry of Radiologic Technologists (ARRT).

The process requires completing three core components: structured education, clinical experience , and a registry examination.

1. Computed Tomography (CT) Specialization

• Prerequisite: Must be certified and registered by the ARRT in Radiography, Nuclear Medicine Technology, or Radiation Therapy.
• Structured Education: Complete at least $16 hours of structured education that aligns with ARRT content specifications, covering topics like patient care, safety, image production, and procedures.
• Clinical Experience: Log and document specific clinical procedures using the ARRT online tracking tool. For CT, you must complete a variety of mandatory patient procedures and examinations (with a maximum allowable limit of nine documented entries per day).
• Exam: Apply and pass the ARRT CT postprimary certification exam. Many employers also require you to learn IV insertion for contrast administration.

2. Mammography Specialization

• Prerequisite: Must be certified and registered in Radiography.
• Regulatory Requirements (MQSA): Mammography is strictly regulated under the Mammography Quality Standards Act (MQSA) overseen by the FDA. You generally need to complete initial training that satisfies MQSA standards (often roughly $40 hours of documented didactic education) and perform a set number of supervised exams before fully logging independent cases.
• Structured Education & Clinicals: Complete the required structured education and log clinical competencies (such as screening, diagnostic, and quality control procedures) via the ARRT Postprimary Pathway Handbook.
• Exam: Apply and pass the ARRT Mammography registry exam.

General Steps to Get Started

1. Check Employer Cross-Training: Speak with your department manager. Many hospitals offer formal or on-the-job cross-training programs where they help you fulfill clinical requirements in exchange for a work commitment.
2. Review Discipline Documents: Visit the ARRT Discipline Documents page to download the exact clinical requirements and exam content specs for your chosen path.
3. Log Hours and Apply: Use your ARRT online account to track structured education and clinical reps as you complete them, then schedule your registry exam.

Are you leaning toward CT or Mammography , and does your current department offer cross-training opportunities?

Absolutely. If you’re already a radiologic technologist (RT/R), specializing is usually a matter of adding a postprimary credential rather than going back through an entirely new radiography program.

The American Registry of Radiologic Technologists (ARRT) offers postprimary credentials in areas including CT, mammography, MRI, interventional radiography, and others.

The typical path

1. Become an ARRT-certified radiographer

• Complete an accredited radiologic technology program.
• Pass the ARRT Radiography exam.
• Become registered/licensed as required by your state.

2. Choose your specialty

For example:

ARRT specifically lists Radiography as the supporting discipline for both CT and Mammography.

3. Complete the specialty education and clinical requirements

For most postprimary credentials, ARRT requires:

• 16 hours of structured education
• Documented clinical experience/procedures
• Compliance with ARRT ethics requirements
• Passing the specialty examination

So, for example, if you choose CT, you'd typically work in a facility that allows you to obtain the required CT clinical experience while completing your education. Then you document your cases, meet ARRT's requirements, and take the CT registry.

Mammography is a little different

For mammography, ARRT requires you to already be certified and registered in Radiography before pursuing the mammography postprimary credential.

There's also a distinction between working in mammography and holding the ARRT(M) credential. For example, Texas DSHS says an ARRT advanced mammography registry isn't itself required to perform mammography in Texas, although mammography technologists must meet applicable training requirements.

Which specialty might be best?

If you're deciding between CT and mammography, I'd think about it this way:

CT may be a good fit if you like:

• Emergency/trauma medicine
• Fast-paced hospital work
• Anatomy and pathology
• Contrast injections and IVs
• More variety in the types of exams
• Potential to work nights/weekends

Mammography may be a good fit if you like:

• Outpatient/clinic environments
• Breast imaging
• Building rapport with patients
• More predictable schedules
• Detailed positioning and image quality
• Preventive screening and women's health

And you don't necessarily have to choose only one forever. You can become a radiographer → CT technologist → later add MRI or another specialty, for example.

If you tell me where you are in the process (still in school, newly graduated, or already working as an RT), I can lay out the exact path, approximate timeline, and what you'd need to do for CT vs. mammography.

Absolutely. If you’re thinking about becoming a radiologic technologist (RT) and eventually specializing in something like CT or mammography, the usual path is:

1. Start with radiography

Most people begin by completing an accredited radiography program, typically an associate degree program, and then become ARRT-certified and registered in Radiography. Radiography is the foundation for several advanced imaging specialties.

Think of it as:

Radiography school → ARRT(R) → work as an X-ray technologist → specialize

2. Get experience in X-ray

After becoming an X-ray technologist, you can work in a hospital, imaging center, outpatient clinic, etc. This is also a good time to figure out which specialty you actually enjoy.

You don't necessarily have to work for years before specializing. The exact timing depends on the employer and your ability to obtain the required clinical experience.

3. Choose a specialty

Two common choices are:

CT (Computed Tomography)

• Cross-sectional imaging and 3D anatomy
• Trauma, stroke, chest/abdomen imaging, etc.
• More exposure to IV contrast and emergency patients
• Generally a fast-paced environment
• Radiography is an accepted supporting credential for ARRT CT.

Mammography

• Breast imaging and screening
• Requires very strong patient communication and positioning skills
• More specialized patient population
• Can be a good fit if you enjoy one-on-one patient interaction
• ARRT requires Radiography as the supporting credential for Mammography.

Other specialties include MRI, interventional radiography, vascular imaging, bone densitometry, and breast sonography.

4. Complete the ARRT postprimary requirements

For CT or mammography, ARRT's postprimary pathway generally involves:

1. Hold the appropriate supporting credential (usually ARRT(R)).
2. Complete 16 hours of structured education specific to the specialty.
3. Complete and document the required clinical procedures.
4. Meet ARRT's ethics requirements.
5. Apply for and pass the specialty examination.

The clinical experience has to be documented and verified, so you'll typically need to arrange clinical training through an employer or other approved setting.

5. Get hired into that specialty

Once you're qualified, you can apply for positions such as:

• CT Technologist
• Mammography Technologist
• MRI Technologist
• Interventional Radiology Technologist
• General Radiologic Technologist

Many employers will also train or cross-train existing X-ray technologists into CT or other modalities.

CT vs. mammography

If you're just starting out, I'd recommend not locking yourself into a specialty yet. Get your radiography education first, then use your clinical rotations to see what you like.

A particularly flexible route is:

Associate degree in Radiography → ARRT(R) → X-ray job → CT certification → CT job

That gives you a broad foundation while allowing you to specialize relatively quickly. ARRT specifically lists CT and mammography among its postprimary credentials.

You can also look at the ARRT postprimary requirements and the ASRT CT and Mammography career roadmaps for the current process.

If you're considering radiologic technology as a career, I can also break down the path from high school → radiography program → ARRT exam → first job → CT/MRI/mammography, including approximately how long each step takes.

Specializing in fields like Computed Tomography (CT) or Mammography as a registered radiologic technologist involves the postprimary pathway through the American Registry of Radiologic Technologists (ARRT).

The transition process follows three core requirements for both modalities: Structured Education, Clinical Experience , and a Registry Exam.

Step 1: Meet the Prerequisites

• Have an active primary certification and registration in Radiography (R.T. [R]). (Note: CT also accepts primary credentials in Nuclear Medicine Technology or Radiation Therapy).
• Ensure your state licensure is in good standing.

Step 2: Complete Structured Education

You must complete at least 16 relevant continuing education (CE) credits structured specifically for the discipline you are entering.

• These credits must align with the ARRT examination content specifications for CT or Mammography.
• Must include at least one credit from each major content category outlined by the ARRT.
• Must be completed within the 24 months before submitting your application.

Step 3: Gain and Log Clinical Experience

You need to document hands-on procedural competencies under the direct supervision of qualified professionals. Finding a clinical internship or cross-training arrangement at your current workplace is the standard route:

• For CT: Complete the specific mandatory and elective clinical procedures outlined in the ARRT CT requirements, logging them via the online ARRT tool.
• For Mammography: Complete initial training (such as 40 contact hours of specific training and performing 25 supervised exams) to satisfy both ARRT and strict federal Mammography Quality Standards Act (MQSA) guidelines before scanning independently.

Step 4: Apply and Pass the Registry Exam

• Submit your application and documentation via the ARRT Postprimary Pathway Portal.
• Schedule and pass the computer-based certification exam (30 ÷ 6 = 5 minutes per question framework roughly, given ~230-250 total test minutes).

Are you currently leaning toward CT or Mammography , and do you plan to cross-train at your current job or look for a formal certificate program?