Ms O’Connor reminds us of another possible risk of radiation exposure—that of increased heart disease from the effect of ionizing radiation on the gonads in causing heritable mutations. I agree that the best way to optimize the risk to benefit ratio is to be sure that only indicated CT scans are performed using the optimal least-radiation protocol.
Correspondence: Dr Redberg, Archives of Internal Medicine, University of California, San Francisco, 505 Parnassus, Ste M-1180, San Francisco, CA 94143-0124 (firstname.lastname@example.org).
Redberg RF. Computed Tomographic Scans: Heart and Heritable Concerns Also—Reply. Arch Intern Med. 2010;170(9):835-836. doi:10.1001/archinternmed.2010.119