Studies on the Effects of Injected Amount of I¹³¹ in Uptake and Release Rate by Thyroid in Guinea Pigs 1. On the Influence of Injected Amount of Redioiodine-¹³¹ in Uptake and Release Rate by Thyroid in Male Guinea Pigs

방사성옥도(放射性沃度)(I¹³¹)의 주입량(注入量)이 기니픽 갑상선(甲狀腺)에의 섭취(攝取) 및 방출률(放出率)에 미치는 영향(影響)에 관(關)한 연구(硏究) 제(第)1보(報) 방사성옥도(放射性沃度)(I¹³¹)의 주입량(注入量)이 웅(雄)기니픽 갑상선(甲狀腺)에서의 섭취(攝取) 및 방출률(放出率)에 미치는 영향(影響)

In order to observe the effect of the injected radioactive iodine-$I^{131}$ on the uptake in thyroid of normal male guinea pigs and P.B.$I^{131}$ conversion ratio of $I^{131}$ in serum, 24 matured male guinea pigs were divided in 4 groups and $35{\mu}c$, $70{\mu}c$, $140{\mu}c$ and $280{\mu}c$ per kg of body weight respectively were injected subcutaneously. 1. The uptake rates of radioactveiodine-$I^{131}$ by external counts of thyroidal uptake reached the maximum level of uptake in 24 hours after injection. 2. As the injected amount increases, the uptake rates of maximum levels and release rate were increased. 3. Uptake rate in the removed thyroid have shown no statistical in the $35{\mu}c$ and $70{\mu}c$ groups of injected guinea pigs. 4. There was no statistical significance in $140{\mu}c$ and $280{\mu}c$ groups of injected guinea pigs. 5. P.B.$I^{131}$ conversion ratio of $I^{131}$ in serum was not in proportion to injected amounts: 61.0%(35), 70.2%(70), 75.3%(140) and 64.8%(280).