CT
risks varied markedly depending on age, sex, and scan protocol The highest
risks of individual cancers were lung cancer and, in women, breast cancer. Lung cancer surpassed breast cancer at age 32 as the leading risk to women.
Risks were nontrivial, and in a worst-case scenario approached 1% cancer risk from a single CTCA scan. Thankfully, the vast majority of patients who currently undergo 64-slice CTCA have risks considerably less than this.