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. 2020 May 5;18(2):1559325820923828. doi: 10.1177/1559325820923828

Figure 3.

Figure 3.

Relationship between radiation-associated cancer type, elapse time, age at the first exposure from CT scanning and subsequent cancer risk. A, Exposure to CT radiation did significantly increase the risk of later leukemia (RR: 1.23, 95% CI: 1.10-1.36). Exposure to CT radiation did significantly increase the risk of later brain cancer (RR: 1.54, 95% CI: 0.84-2.45). B, Those exposed to CT were at a 1.24-fold higher risk of cancer by 2 years after CT (RR: 1.24, 95% CI: 1.19-1.28), at a 1.38-fold higher risk after 5 years (RR: 1.38, 95% CI: 0.83-1.94), and at a 1.26-fold risk after 10 years (RR: 1.26, 95% CI: 0.74-1.77) than nonexposed children. C, Compared to those not exposed to pediatric CT, the cancer risk was 1.35-fold greater for children exposed to CT when 0 to 5 years of age (RR: 1.35, 95% CI: 1.25-1.45), 1.14-fold for children 6 to 15 years of age (RR: 1.14, 95% CI: 1.06-1.22), and 1.24-fold for children >15 years of age (RR: 1.14, 95% CI: 1.14-1.34). CT indicates computed tomography; RR, relative risk.