Monitoring of I Excretions and Used Materials of Patients Treated With 131I

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Abstract
The maximum excretion rates of Iodine in exhalation, perspiration and salivation were measured in patients treated with 131I for thyroid carcinoma and hyperthyroidism. The contamination of dishes, chopsticks, toothbrushes, linen (coversheets, sheets and towels), and underwear (shirts and drawers) were monitored and evaluated along with the air contamination level arising from these items. The maximum excretion rate of the administered dose on an average was 3.2 × 10−6 per hr in exhalation, 2.45 × 10−6 per hr in perspiration, and 6.3 × 10−1 per ml. in salivation. The maximum contamination rate of items ranged from 1.1 × 10−1 to 10−5 of the administered dose. The predominant radio activity of the skin surface resulted from perspiration with a maximum of 1.8% evaporation into the air as water vapor. The air contamination level ranged 1.4 × 10−6 to 1.2 × 10−1 per hr of the administered dose.

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