How to Become a CT Technologist: Training, Certification & Pay
A practical 2026 U.S. guide to choosing the right CT credential, securing real clinical experience, and evaluating training costs and pay.
The short answer: In the U.S., computed tomography (CT) is normally a postprimary imaging specialty. If you're starting without an imaging credential, your usual route is to qualify first in radiography, nuclear medicine technology, or radiation therapy. If you're already appropriately credentialed, you can pursue CT through supervised clinical practice, required education, and an additional certification exam. You generally do not need a second full degree.
For ARRT's CT certification, the requirements in force since September 1, 2026 include 16 structured-education hours and 125 documented clinical repetitions across at least 25 different procedures, with 30 repetitions using iodinated IV contrast. The NMTCB offers a different CT credential with a different clinical model. Your starting credential, state authorization, and access to qualifying scans determine which route makes sense. ARRT CT requirements · NMTCB CT requirements
What does a CT technologist do?
CT technologists operate computed tomography scanners to produce cross-sectional images that physicians use to evaluate injuries and disease. The job combines patient care with precise equipment operation. CT uses ionizing X-rays; MRI uses magnetic fields and radiofrequency pulses. Both can produce detailed images, but the safety rules, workflows, and training routes are not interchangeable.
A CT shift may include confirming orders and patient identity, reviewing safety and contrast screening information, positioning and transferring patients, selecting appropriate protocols under department policy, setting scan parameters, obtaining and evaluating images, documenting radiation-dose information, and coordinating with radiologists and other clinicians. CT often supports emergency and trauma services, so some jobs involve nights, weekends, time-sensitive examinations, and medically unstable patients. ARRT CT task description
The technical skills matter, but so does judgment. A patient may be in pain, unable to follow breathing instructions, or attached to multiple medical devices. Contrast work introduces additional screening and response duties, performed only within state law, facility protocols, and the technologist's authorized scope. This is not a job where good image quality excuses bad patient care.
Which CT training path fits your starting point?
Where should you start?
Choose your strongest current imaging credential. This is an educational route suggestion, not certification or state-licensing verification.
Choose your starting point before comparing schools or buying continuing-education credits. The CT pathway finder on this page offers a quick educational starting point, not an eligibility decision from a certifying board.
| Your current qualification | Sensible next step | What to check first |
|---|---|---|
| No recognized imaging credential | Explore an eligible primary imaging program, commonly radiography; then add CT | Program eligibility for primary credentialing, cost, clinical placements, state rules |
| ARRT-certified and registered radiographer, R.T.(R) | Consider ARRT postprimary CT or NMTCB(CT), with employer cross-training or a CT certificate | CT scanner access, case diversity, legal authority to make exposures |
| ARRT nuclear medicine R.T.(N) or NMTCB(CNMT) | Compare ARRT(CT) and NMTCB(CT) against your actual clinical setting | Whether your PET/CT work meets diagnostic-quality competency rules |
| ARRT radiation therapist R.T.(T) | Consider ARRT or NMTCB CT pathways | Access to diagnostic CT exams rather than planning-only scans |
| Sonography only, a limited-scope X-ray permit, or unrelated healthcare experience | Do not assume direct eligibility for CT postprimary certification | Which accepted primary credential you would need first |
ARRT accepts radiography, nuclear medicine technology (including NMTCB nuclear medicine certification), or radiation therapy as supporting categories for CT. A sonography credential, including ARDMS, does not qualify by itself for ARRT CT, although sonography supports certain other postprimary disciplines. NMTCB's CT eligibility also includes appropriately qualified radiographers and radiation therapists, not just nuclear medicine technologists. See ARRT's supporting-category chart and NMTCB's eligibility criteria.
Starting from zero: earn an eligible primary credential
The most familiar beginner route is: complete a suitable radiography program, satisfy the relevant primary certification requirements, obtain any state authorization required for clinical practice, then complete CT-specific education and clinical training. Radiography programs commonly lead to an associate degree, but admissions prerequisites, institutional recognition, clinical experience, cost, and timeline vary. Some students choose nuclear medicine or radiation therapy first; these are valid imaging careers in their own right, not simply shortcuts to CT.
A program calling itself “CT training” does not necessarily make a beginner eligible for the ARRT CT exam. Ask the school to identify which initial credential you will earn, the accrediting and certification requirements for that credential, and how its students reach actual CT practice afterward. Our radiologic technologist career guide explains the broader field. If you're ready to explore the foundational education, compare radiologic technology school options, which are not the same thing as postprimary CT certification programs.
Already a radiographer: investigate cross-training first
An employed radiographer may be able to complete CT didactic education while getting supervised CT cases through the hospital or imaging department. This can be less expensive than buying another academic certificate. But “we have a CT scanner” is not the same as “we will let you log all required clinical competencies.” You need a documented arrangement for qualified verifiers, diagnostic case variety, patient and contrast opportunities, and legal exposure privileges.
If your workplace lacks CT equipment or cannot release you from radiography duties, a formal postprimary certificate with coordinated clinical placements may be a better fit. Ask for a sample clinical schedule and what happens if a particular required type of exam is unavailable.
Already in nuclear medicine or radiation therapy: check the kind of scans
Nuclear medicine practitioners who use PET/CT or SPECT/CT scanners can sometimes complete qualifying CT experience at their existing workplace. But the distinction is subtle and important: using a hybrid scanner does not automatically make every attenuation-correction scan a clinical competency. The NMTCB requires diagnostic-quality work, not scans performed only for attenuation correction. ARRT also excludes procedures performed solely for PET/SPECT attenuation correction or radiation therapy planning. Both boards allow qualifying CT work on appropriate scanners under their respective rules. ARRT clinical requirements · NMTCB clinical competency form
A radiation therapist working mainly with treatment-planning scans may need rotations in diagnostic imaging. Before choosing either board, confirm the procedures you can actually perform and document.
ARRT(CT) vs. NMTCB(CT): what changes?
These are two separate postprimary credentials. Neither is a state practice license, and neither substitutes for authorization required by your state or employer. Recognition for a specific job may depend on the employer and jurisdiction.
| Requirement | ARRT postprimary CT | NMTCB specialty CT |
|---|---|---|
| Eligible starting credentials | ARRT radiography, nuclear medicine, radiation therapy; accepted NMTCB nuclear medicine | Qualifying nuclear medicine, radiography, or radiation therapy credentials; includes specified CAMRT equivalents |
| Structured education | 16 hours within 24 months, with coverage across four exam content categories | 35 contact hours within 3 years; minimum four each in four specified topics, with an exemption for certain recent accredited nuclear medicine graduates |
| Clinical experience | 125 repetitions spanning at least 25 of 67 procedures; 3–5 of each selected procedure | 300 clinical hours plus 50 repetitions across at least 10 procedures; 3–5 of each selected procedure |
| IV contrast minimum | 30 repetitions with iodinated IV contrast | 25 repetitions with IV contrast |
| Clinical recency | Generally the preceding 24 months until exam-window assignment | Clinical hours and competencies within preceding 3 years |
| Exam application fee, checked Nov. 2026 | $225 using an ARRT supporting credential; $450 when using NMTCB as ARRT supporting credential | $225 |
| Renewal | Annual renewal; generally 24 approved CE credits per biennium | Annual renewal; 12 CT-specific CE hours per two-year cycle |
Check the correct board's rules, not a course provider's summary. See ARRT's current CT documents, ARRT fees, ARRT CE, and the NMTCB CT examination page.
The ARRT CT exam outline effective September 1, 2026 lists 165 scored questions and 30 unscored pilot questions. Its scored areas are patient care (21), safety (21), image production (52), and procedures (71). The exam's reported passing standard is a scaled score, not a percentage of questions answered correctly. ARRT exam content specifications
ARRT's September 2026 clinical requirements: the rules people miss
The current ARRT clinical-experience worksheet has 67 possible procedures in six groups, from anatomical scans to postprocessing and quality assurance. You must document at least 25 different procedures, with 3 to 5 repetitions of each selected procedure, to accumulate at least 125 valid repetitions. For example, if you document exactly 25 distinct procedures, each needs five qualifying repetitions to reach 125. Completing three of each of 25 procedures gives you only 75, which is not enough.
Other restrictions can make a seemingly full log invalid:
- At least 30 repetitions must use iodinated IV contrast, and particular listed procedures require it.
- You may document no more than one procedure for the same patient on the same day; a combined chest/abdomen/pelvis order is not three log entries.
- ARRT permits up to nine reported CT entries per day, even if you perform more scans on that shift.
- Procedures performed solely for attenuation correction or radiation therapy treatment planning do not qualify.
- CT scanning completed remotely does not meet ARRT's clinical requirement. You must be present where the equipment and patient are located.
- You need verified, independently completed procedures; a qualified registered technologist or interpreting physician verifies the work.
ARRT counts repetitions, not a universal minimum number of CT clock-hours. NMTCB requires both hours and repetitions. Read ARRT's current clinical-experience requirements.
Mind the expiration clock. ARRT's clinical and structured-education documentation generally needs to be within the 24 months before application. Earlier log entries expire on a rolling basis until the exam window is assigned. ARRT also publishes transition provisions for people who began logging under the pre-September 2026 rules; don't discard an existing worksheet without checking those rules in your account. ARRT clinical-experience guidance
How long does CT technologist training take?
There is no defensible single U.S. answer. A complete beginner must budget time for both a primary imaging route and additional CT preparation. A credentialed radiographer with an accommodating employer might finish substantially sooner, but timing depends on the clinical schedule, availability of qualifying cases, course completion, application processing, and exam readiness.
| Starting point | What takes time | Planning reality |
|---|---|---|
| No qualifying credential | Primary program, primary exam/state authorization, then CT requirements | Typically years, not a few weeks; a postprimary CT course is not a substitute for initial imaging preparation |
| Credentialed radiographer with employer support | Structured education, supervised case mix, verification, exam | May fit around employment, but a promised short completion date means little without guaranteed clinical access |
| Credentialed professional in a formal postprimary program | Academic calendar and clinical rotations | Some programs publish fixed schedules; Cleveland Clinic, for example, lists nine months |
| Nuclear medicine or radiation therapy practitioner | Finding eligible diagnostic scans and the correct board pathway | Hybrid imaging or treatment-planning work may not supply the full required case mix |
The most important scheduling question isn't “How quickly can I finish the online lectures?” It is “Where, with whose supervision, and at what frequency will I complete every eligible CT procedure?”
How much does CT training cost?
Costs depend on where you're starting, and conflating beginner tuition with postprimary training prices leads to misleading estimates. A beginner pays for an initial imaging education as well as any later CT courses and credentialing. Someone who already holds an eligible primary credential may only need approved didactic education, arranged clinical access, an exam application, and any required travel or supplies.
For a documented example, the Cleveland Clinic School of Health Professions currently lists $3,450 tuition for its nine-month postprimary CT program, with clinical education at two approved sites. That is one program's tuition, not a national average. The school also says its CT program does not participate in federal Title IV aid such as Pell Grants or federal student loans. Cleveland Clinic program · official tuition and aid
Before paying a deposit, request an itemized estimate that separates tuition, textbooks, clinical placement costs, immunization/background requirements, travel, licensing, exam fees, and any unpaid time away from work. Also ask whether your employer will provide release time or reimburse tuition and whether the program has a refund policy if clinical placement falls through.
Can you complete CT training online?
Only the classroom portion may be online. Online CT coursework can address anatomy, image production, dose management, contrast safety, and the structured education requirement if it meets the chosen board's standards. A fully online course without genuine, qualifying, supervised CT clinical work cannot satisfy the entire postprimary certification path. If an advertisement promises the complete credential without patient-based clinical experience, treat that as a serious warning sign.
CT technologist salary: use the right denominator
No separate U.S. Bureau of Labor Statistics national median is published for CT technologists alone. BLS includes CT workers within SOC 29-2034, Radiologic Technologists and Technicians, alongside several related imaging roles. Published CT-specialty salaries must therefore be labeled by their actual source and measure.
| Published measure | Amount | What it actually covers |
|---|---|---|
| BLS median, May 2025 | $80,110/year | Broad radiologic-technologist occupation including, but not limited to, CT |
| ASRT CT mean, 2024 survey | $87,785/year | Full-time respondents practicing primarily in CT; sample n=2,479 |
| ASRT CT median, 2024 survey | $83,200/year | Same CT-specialty survey group; not the BLS national median |
| ASRT radiography mean, 2024 survey | $73,274/year | Primarily general radiography respondents, useful as a same-survey comparison |
| BLS MRI median, May 2025 | $95,480/year | Distinct MRI occupation (SOC 29-2035), not a CT benchmark |
Why do these numbers differ? BLS OEWS is an employer-based national occupation survey, while the ASRT specialty study is a professional association survey. The ASRT results are useful for comparing modalities within that survey, but shouldn't be presented as a census of all U.S. CT staff. Salaries also vary by location, employer, shift, role, and compensation structure. A travel contract's advertised weekly package may include stipends, hours, and assignments not comparable to a permanent staff wage.
The 2024 ASRT survey reports a CT mean of $87,785 and a median of $83,200. For general radiography, its mean was $73,274; that does not prove gaining a CT credential causes a fixed raise of $14,511. Different roles, experience, and workplaces may contribute to the comparison. 2024 ASRT full survey · BLS occupation profile
Job outlook and working conditions
BLS's 2025–2035 Employment Projections indicate 5% growth and about 13,000 average annual openings for the broader radiologic-technologist-and-technician occupation (SOC 29-2034). These are not CT-only projections. MRI is tracked separately, with 7.7% growth and approximately 2,300 annual openings. BLS wage survey employment and employment-projection base counts come from different statistical programs; don't treat them as interchangeable. BLS projection table
Separately, the 2025 ASRT Radiologic Sciences Staffing and Workplace Survey reported a 19.4% CT vacancy rate among surveyed employers' actively recruited CT positions, higher than 17.7% in 2023. This is an employer staffing snapshot, not an individual graduate's chance of getting hired or a federal job-growth rate. ASRT staffing survey announcement
CT versus X-ray versus MRI: which is a better fit?
| Consideration | General radiography | CT | MRI |
|---|---|---|---|
| Imaging physics | Ionizing X-rays; planar and other imaging | Ionizing X-rays; cross-sectional reconstruction | Strong magnetic fields and radiofrequency pulses; no ionizing X-rays |
| Typical route | Primary imaging education and credentials | Usually an additional postprimary credential | Primary or postprimary ARRT routes, depending on eligibility |
| Patient workflow | Wide mix of routine, mobile, and emergency exams | Frequently fast-paced, acute cases and contrast examinations | Often longer scans; intensive magnetic-device screening |
| Main practical challenge | Positioning variety and patient transfers | Case mix, dose management, contrast and emergency pace | MRI safety, implants/devices, claustrophobia and longer scanning times |
| National wage data | Included in broad radiologic SOC | No CT-only BLS median | Separate MRI BLS occupation |
If you love rapid problem-solving and high-acuity imaging, CT may be appealing. If you want fewer time-sensitive emergency cases, research the actual facility and shift, not just the modality: an outpatient CT center and a trauma hospital can feel like different jobs. If you prefer not to work with ionizing radiation, MRI training may be worth exploring, but magnetic safety brings its own serious responsibilities.
Think twice about CT if you cannot tolerate high-acuity patient situations, have no realistic way to obtain qualifying clinical scans, or are counting on an online course as a shortcut around initial credentialing. None of these makes CT categorically impossible; each changes the cost, time, or fit calculation.
Certification is not a nationwide practice license
ARRT and NMTCB issue professional certifications, not a universal state license to operate ionizing-radiation equipment. State rules and the clinical site's requirements govern what you can legally do, often including whether you may initiate a scan, perform venipuncture, administer contrast, or work under a given supervision arrangement. Requirements can change, and a credential alone does not override local law.
Before arranging clinical hours, check the state radiation-control or medical imaging licensing authority where the clinical site is located. California, for example, amended its rules relating to venipuncture by certified radiologic technologists in 2026; older summaries may not capture the current supervision details. Confirm the applicable statute and facility policy rather than relying on a blanket national description. California Department of Public Health notice
Six questions to ask before enrolling in CT training
- Exactly which credential and pathway does this course prepare me for? Ask for the board and eligibility criteria in writing. A completion certificate is not the same as ARRT(CT) or NMTCB(CT).
- Who provides clinical access? Will the program assign an approved site and qualified verifiers, or is placement entirely your responsibility?
- Can the site supply the required case mix? Ask how students obtain sufficient contrast exams, breadth of procedures, and properly documented cases under the current rules.
- Can I legally initiate scans at that site? Confirm state authorization and rules for IV work and patient care before you start logging procedures.
- What is the full price, and what if placement fails? Request tuition, added fees, supplies, insurance, schedule requirements, and the refund policy.
- What evidence does the program have that graduates complete the board pathway? Ask for recent completion and certification outcomes with dates and cohort size; don't accept a vague “exam prep included” promise.
Frequently asked questions
Can you become a CT tech without becoming an X-ray tech first?
Yes, radiography is not the only accepted supporting discipline. Qualifying nuclear medicine technologists and radiation therapists may use recognized CT postprimary pathways. But a person starting without an eligible primary imaging credential cannot simply skip directly into ARRT CT certification.
Is a CT certificate the same as CT certification?
No. A school certificate documents training completed at that school. Board certification, such as ARRT(CT) or NMTCB(CT), requires the certifying body's eligibility, education, clinical, and exam requirements. State practice authorization may be separate again.
Does an ARDMS sonography credential qualify me for ARRT CT?
Not by itself. ARRT's supporting-category list accepts sonography for certain other postprimary credentials, including MRI, but not CT. Verify your other credentials if you hold more than one.
How many clinical scans are needed for ARRT CT in 2026?
ARRT's requirements effective September 1, 2026 call for at least 125 valid repetitions across at least 25 different procedures, with 3–5 repetitions of each selected procedure and 30 repetitions using iodinated IV contrast. ARRT also limits daily logging and multiple entries for one patient.
Can PET/CT attenuation-correction scans count?
Do not assume so. ARRT excludes work performed solely for PET/SPECT attenuation correction. NMTCB permits appropriate diagnostic-quality procedures done in conjunction with hybrid imaging, but its competency form also says scans performed only for attenuation correction do not qualify. Ask the respective board if your specific cases count.
Do CT technologists earn more than radiographers?
In the ASRT 2024 survey, CT respondents reported higher average full-time compensation than general radiography respondents. That is a comparison of survey groups, not a guaranteed raise for earning CT credentials. Location, experience, shifts, and employer affect pay.
Do I need a degree in CT?
Usually not a second degree specifically in CT. For ARRT postprimary CT, you need an accepted supporting primary credential, structured education, documented clinical experience, and a passing exam. Beginners must first satisfy the education and certification requirements of an eligible primary imaging discipline.
What is the most important question before buying an online CT course?
Where will you complete eligible clinical competencies, and who will verify them? An online course without an achievable clinical plan can leave you with paid coursework but no route to board certification.
Official sources and verification dates
Requirements checked November 11, 2026. Always confirm changes with the credentialing board and the state agency before acting.
- ARRT: CT overview and current 2026 requirements; ARRT clinical documentation guidance; ARRT supporting categories; ARRT fees.
- NMTCB: CT exam, clinical and education requirements, fees, and continuing education; NMTCB competency form.
- BLS: Radiologic and MRI Technologists, May 2025 wages; BLS: Employment Projections, 2025–2035.
- ASRT: 2024 Radiologic Technologist Wage and Salary Survey; ASRT: July 2025 staffing announcement.
- Cleveland Clinic: CT training and tuition; tuition schedule.
Starting without an imaging credential?
Your first decision is which eligible primary imaging program fits you. A CT postprimary course comes later. Compare the fundamentals before paying for a specialization.
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