Timeline of the U.S. Radiologic Technologists Study
Key Goal: To understand how repeated low-dose occupational ionizing radiation exposures are related to cancer and other health conditions.
Study identifies current and former radiologic technologists ARRT certified for at least two years from 1926-1982. Ultimately 146,022 technologists enrolled (106,958 women and 39,064 men).
90,305 (68%) technologists complete questionnaire. Additional 14,199 respond to shorter telephone survey.
90,972 (72%) technologists complete questionnaire.
Genetic Studies Begin
Goal: To better understand the role of genetics in cancer, alone or in conjunction with radiation.
Approximately 10,000 blood samples, 900 saliva samples collected.
73,625 (72%) technologists complete questionnaire, including 2,744 who worked before 1950 and completed a telephone survey.
58,484 (62%) technologists complete fourth survey questionnaire, 14,647 complete fluoroscopically-guided procedures questionnaire, and 6,222 complete nuclear medicine procedures questionnaire.
During 2015 and ongoing
- Conduct analyses of occupational radiation exposure and risk of specific cancers
- Conduct analyses of work history and cancer risk analyses of USRT Cohort members who perform nuclear medicine procedures and fluoroscopically guided procedures
- Evaluate risk of cataracts in the entire USRT cohort and in technologists who perform nuclear medicine procedures and fluoroscopically guided procedures
- Evaluate measures for estimating lifetime exposures to ultraviolet radiation and conduct exposure response analyses of cancer and other serious disease risks in relation to estimated lifetime ultraviolet radiation exposure