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BOOKLET to Provide Basic Information Regarding Health Effects of Radiation (2nd edition)
Chapter 10 Health Management 10.3 Thyroid Ultrasound Examination

Thyroid Ultrasound Examination: Order of Full-scale Survey

Thyroid Ultrasound Examination: Order of Full-scale Survey_Figure

The Thyroid Ultrasound Examination has been conducted sequentially, starting in areas where ambient dose rates were higher at the time of the accident at Tokyo Electric Power Company (TEPCO)'s Fukushima Daiichi NPS.

For Full-scale Surveys following the Preliminary Baseline Survey, notices of the examination have been sent mostly in the same order.

Since the third Full-scale Survey (fourth-round survey overall), the examination has been conducted mostly in the same order for those aged 18 or younger. However, for those aged 19 or older, the examination has been conducted not by region but by age (school year). In FY2018, those born in FY1996 (aged 22) and born in FY1998 (aged 20) were examined, and in FY2019, those born in FY1997 (aged 22) and born in FY1999 (aged 20) were examined.

Since FY2017, the examination has been conducted for those who become 25 years old in the relevant year, and then once every five years thereafter.

  • Included in this reference material on March 31, 2015
  • Updated on March 31, 2019
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