Radiation risk of thyroid scintigraphy in newborns

✍ Scribed by H. Beekhuis; D. A. Piers

• Book ID: 104684071
• Publisher: Springer
• Year: 1983
• Tongue: English
• Weight: 313 KB
• Volume: 8
• Category: Article
• ISSN: 0340-6997
• DOI: 10.1007/bf00253544

✦ Synopsis

Tumor risk factors were calculated for newborns who were investigated for congenital hypothyroidism (CHT) with radionuclides by thyroid scintigraphy. Figures for three radiopharmaceuticals, 99mTc-pertechnetate, 123I-and 131I-sodium iodide for adults were extrapolated to newborns. The radiation dose to the normal thyroid gland in newborns was seven times higher for 123I-NaI than for 99mTcO-4, the somatically effective total body dose was two times higher for 123I-NaI than for 99mTcO-4. The use of 123I-NaI was preferred because of better scintigraphic results. Risk estimates for thyroid scintigraphy in newborns in the diagnostic work-up of CHT are given using published age-dependent tumor induction figures derived from atomic bomb survivors.