title: Measurements and prediction of the ambient dose rate from patient receiving radioiodine administration after thyroid ablation.
abstract: Empirical equations were proposed for the prediction of the ambient dose equivalent rates from patients administered with radioiodine for the treatment of thyroid cancers. Ambient dose equivalent rates were measured for 59 patients who received high-dose (131)I treatment after thyroid ablation at different times after the administration. An ion chamber was used to measure the dose equivalent rates at 1 m away from the body and on contact to the thyroid of the patients. The resulting equations for estimating dose equivalent rates at 1 m from the body and on contact to the thyroid are, respectively, dot H(1)(body)=0.236e(-0.0501t) (mSv h(-1) GBq(-1)) and dot H(c)(thy)=2.676e(-0.0443t) (mSv h(-1) GBq(-1)). The effective half-times in total body appeared to be 13.86 h.
authors.affiliation: Radiation Safety Research,  Korea Institute of Nuclear Safety, Daejeon,  Republic  of Korea.
authors.forename: Chang Bum
authors.initials: CB
authors.lastname: Kim
authors.forename: Jae Won
authors.initials: JW
authors.lastname: Jung
authors.forename: Kyu Hwan
authors.initials: KH
authors.lastname: Jeong
authors.forename: Byeong-Cheol
authors.initials: BC
authors.lastname: Ahn
authors.forename: Hwa Hyung
authors.initials: HH
authors.lastname: Lee
authors.forename: JaiKi
authors.initials: J
authors.lastname: Lee
mesh_terms: D055011:Ablation Techniques / Q000379:methods*; D005720:Gamma Rays; D006801:Humans; D007457:Iodine Radioisotopes / Q000008:administration & dosage*; D011829:Radiation Dosage; D011835:Radiation Protection; D013819:Thermoluminescent Dosimetry; D013964:Thyroid Neoplasms / Q000532:radiotherapy*
chemical_list: D007457:Iodine Radioisotopes