原子炉事故にともなう緊急時医療活動におけるスペクトロサーベイメータを用いた甲状腺 ^<131>Iの測定 Measurement of ^<131>I in the Human Thyroid Gland with a Collimated Spectrosurvey Meter for the Case of Emergency Exposure
Feasibility for the use of the collimated NaI (Tl) scintillation spectrosurvey meter SS-γ C3475 (Hamamatsu Photonics) in the estimation of thyroidal <sup>131</sup>I burden in patients that received emergency exposure to radioiodine (<sup>131</sup>I) is demonstrated. When the NaI (Tl) crystal probe collimated well to a neck phantom simulating the human thyroid gland, the detection limit of <sup>131</sup>I deposited in that organ was estimated at 0.58kBq, which was well below the generally adopted screening level of 30kBq. The detection system for thyroidal <sup>131</sup>I presented in this report is remarkably inexpensive compared to the conventional whole-body counters, and is considered to provide a satisfactorily accurate evaluation of thyroidal <sup>131</sup>I burden.
- 保健物理 : hoken buturi
保健物理 : hoken buturi 31(4), 443-445, 1996-12-01
Japan Health Physics Society