The median annual wage of radiation therapists was $74,980 in May 2010. The median wage is the wage at which half the workers in an occupation earned more than that amount and half earned less. The lowest 10 percent earned less than $50,950, and the top 10 percent earned more than $110,550.
Most radiation therapists work full time. Because radiation therapy procedures are usually planned in advance, radiation therapists keep a regular work schedule.
Source: Bureau of Labor Statistics, U.S. Department of Labor, Occupational Outlook Handbook, 2012-13 Edition