Iodine-131 is commonly used in medical diagnosis and therapy for patients with hyperthyroidism or differentiated thyroid cancer. Following treatment, patients may recuperate in a hotel room to avoid exposing family members. The main purpose of this study was to estimate external effective dose rate coefficients to a hotel worker who handles potentially contaminated bed linens due to secretions from ¹³¹I patients as sweat or urine. The external dose rate estimates were derived using Monte Carlo radiation transport code and the phantom with movable arms and legs to model a housekeeper standing in an upright position holding a pile of bed linens. Simulations further integrated the body burden of time-dependent biokinetic metabolism of ¹³¹I in the patient’s body, differentiating between biokinetic excretion models of hyperthyroid vs. cancer patients. Organ absorbed dose rate and effective dose rate coefficients were calculated for three scenarios of bed linen contamination and estimated out to 5 d postadministration and compared to past ¹³¹I patient contamination measurements.

Iodine-131通常用于甲状腺功能亢进或分化型甲状腺癌患者的医学诊断和治疗。治疗后，患者可在酒店房间休养，以免暴露家人。这项研究的主要目的是估计旅馆工人的外部有效剂量率系数，该旅馆工人处理由于¹³¹ I患者的汗液或尿液分泌而可能受到污染的床单。外部剂量率估计值是使用Monte Carlo辐射传输代码和带有可移动臂和腿的体模来建模的，该模型用于模拟站立并保持一堆床单的直立管家。模拟进一步整合了¹³¹依赖于时间的生物动力学代谢的身体负担我在患者体内区分甲状腺功能亢进患者和癌症患者的生物动力学排泄模型。计算了三种被褥污染情况下的器官吸收剂量率和有效剂量率系数，并估计给药后5 d并与过去¹³¹ I患者的污染测量值进行了比较。