Korean J Med Phys.  2007 Dec;18(4):187-193.

Assessment of Absorbed Dose of by Organ according to Thyroidal Uptake of Radioactive Iodine for Adult Korean Males

• Kim J
• Lim C
• Whang J

Abstract

In an effort to assess the internal absorbed dose of radionuclides that is suitable to Koreans' physiological characteristics, we asked 28 male Koreans to take 131I orally, determined the thyroidal uptake and daily urination ratio, and assessed the absorbed dose by organ. As a result, first, 24 hours after administering, the average thyroidal uptake and the daily urination ratio registered 19.70% and 71.12%, respectively. Second, the whole body effective dose according to the thyroidal uptake calculated herein and the existing ICRP-suggested thyroidal uptake of 30% offered 1.464E-08 Sv and 2.189E-08 Sv, respectively, showing a 1.5 times difference. To evaluate the quantity of the absorbed dose of radioactive iodine, we can better reduce the error in assessing the body exposure dose by conducting measurement according to human races rather than depending on the existing ICRP data.

Keyword

Internal absorbed dose; Thyroid; 131I

MeSH Terms

Adult*
Continental Population Groups
Humans
Iodine*
Male*
Radioisotopes
Thyroid Gland*
Urination
Iodine
Radioisotopes