A new in vivo thyroid I-131 monitoring method was devised by using an imaging plate (IP). A thyroid image obtained with a realistic neck-thyroid phantom showed a unique shape characteristic of the thyroid gland. A I-131 thyroid imaging allows visual confirmation of thyroid accumulation of I-131. The detection limit of the IP system of 290 Bq was about 1/100 of the screening level of 30 kBq in cases of public emergencies. The IP system is applicable for thyroid I-131 monitoring. (C) 2001 Elsevier Science Ltd. All rights reserved. [References: 16]
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