In the present study, iodine-131 S values (r_T ← thyroid) were calculated for 30 target organs and tissues using the most recently developed Korean reference computational phantoms. The calculated S values were then compared with those of the International Commission on Radiological Protection (ICRP) reference computational phantoms to investigate the dosimetric impact of the Korean S values against those of the ICRP reference phantoms. The results showed significant differences in the S values due to the different anatomical/morphological characteristics between the Korean and ICRP reference phantoms. Most target organs/tissues showed that the S values of the Korean reference phantoms are lower than those of the ICRP reference phantoms, by up to about 4 times (male spleen and female thymus). Exceptionally, three target organs/tissues (gonads, thyroid, and extrathoracic region) showed that the S values of the Korean reference phantoms are greater, by 1.5–3.7 times. We expect that the S values calculated in the present study will be beneficially used to estimate organ/tissue doses of Korean patients under radioiodine therapy.

在本研究中，碘 131 S 值 (r _T← 甲状腺）使用最新开发的韩国参考计算模型计算了 30 个目标器官和组织。然后将计算出的 S 值与国际放射防护委员会 (ICRP) 参考计算体模的值进行比较，以研究韩国 S 值与 ICRP 参考体模的剂量学影响。结果显示，由于韩国和 ICRP 参考体模之间的解剖学/形态学特征不同，S 值存在显着差异。大多数目标器官/组织显示，韩国参考体模的 S 值低于 ICRP 参考体模的 S 值，最多约 4 倍（男性脾脏和女性胸腺）。特殊情况下，三个靶器官/组织（性腺、甲状腺、和胸外区域）表明，韩国参考体模的 S 值更大，为 1.5-3.7 倍。我们预计本研究中计算的 S 值将有益地用于估计接受放射性碘治疗的韩国患者的器官/组织剂量。