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Radiation Therapists

US occupation · SOC 29-1124

Job titles people report: Computed Tomography Simulation Therapist (CT Simulation Therapist), Dosimetrist, Radiation Therapist (RT), Radiation Therapy Technologist (RTT), Registered Radiation Therapist, Staff Radiation Therapist

Pay and outlook

Median annual wage, May 2025
$105,310
Half earn more, half earn less
Middle half earn
$92,060 – $126,340
25th to 75th percentile
People employed, May 2025
17,070
Wage and salary jobs (OEWS)
Projected change, 2025–35
+2.8%
Growing slower than all jobs (0% to under 3.5%)
Openings a year (projected)
700
New jobs plus replacing people who leave
Typical education to enter
Associate's degree
BLS
  • All figures are for the United States as a whole. Pay varies a lot by state and city.
  • Wages are for everyone working in the occupation in May 2025, at every career stage. They are not starting salaries or figures for new graduates.
  • Growth and openings are BLS projections for 2025–35. They are estimates, not promises. Openings include jobs that open up when people retire or change occupation, not just new jobs.

What the work involves

Provide radiation therapy to patients as prescribed by a radiation oncologist according to established practices and standards. Duties may include reviewing prescription and diagnosis; acting as liaison with physician and supportive care personnel; preparing equipment, such as immobilization, treatment, and protection devices; and maintaining records, reports, and files. May assist in dosimetry procedures and tumor localization.

Main tasks

  • Position patients for treatment with accuracy, according to prescription.
  • Administer prescribed doses of radiation to specific body parts, using radiation therapy equipment according to established practices and standards.
  • Follow principles of radiation protection for patient, self, and others.
  • Review prescription, diagnosis, patient chart, and identification.
  • Conduct most treatment sessions independently, in accordance with the long-term treatment plan and under the general direction of the patient's physician.
  • Enter data into computer and set controls to operate or adjust equipment or regulate dosage.
  • Check radiation therapy equipment to ensure proper operation.
  • Observe and reassure patients during treatment and report unusual reactions to physician or turn equipment off if unexpected adverse reactions occur.

Description and tasks from the O*NET® 31.0 Database.

Getting in

Typical education to enter (BLS)
Associate's degree
O*NET Job Zone 3
Medium preparation
Most occupations in this zone require training in vocational schools, related on-the-job experience, or an associate's degree.

Interests it suits

The strongest of the six O*NET interest types for this occupation, highest first. The short glosses are ours.

  • Realistic: hands-on work with tools, machines, plants or animals
  • Social: helping, teaching and caring for people
  • Investigative: research, analysis and solving problems with ideas

Fields of study that lead here

From the federal CIP–SOC crosswalk, which links 1 programme to this occupation. A link means the programme prepares people for this kind of work. It doesn't mean the programme is required, or that it's the only route.

Health & Nursing

  • Medical Radiologic Technology/Science - Radiation Therapist

Find colleges that fit you with our matcher: choose Health & Nursing at the Major step.

Where many students take health & nursing

Ordered by the field's share of degrees awarded times undergraduate enrolment (College Scorecard), among colleges with at least 1,000 undergraduates. Online universities are included. It's a rough measure of how big the programme is. It says nothing about quality. The share counts every programme in the field, not only the ones linked to this career.

Related careers

Related occupations from the O*NET database, in its order.

← All careers

Sources

This page includes information from the O*NET 31.0 Database by the U.S. Department of Labor, Employment and Training Administration (USDOL/ETA). Used under the CC BY 4.0 license. O*NET® is a trademark of USDOL/ETA. CollegeMatcher has modified all or some of this information. USDOL/ETA has not approved, endorsed, or tested these modifications. O*NET 31.0 Database · CC BY 4.0

Changes: we show the core tasks in the O*NET database with the highest importance ratings (up to eight, in that order), the top three O*NET interest types by score, and shortened Job Zone names. Titles, descriptions and task text are unchanged.

Wages: U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics, May 2025. Projections, typical entry education and training: U.S. Bureau of Labor Statistics, Employment Projections 2025–35. Fields of study: NCES and BLS CIP 2020–SOC 2018 Crosswalk. All public domain. OEWS · Employment Projections · CIP–SOC crosswalk