Asahi: Iodine-132 not considered in tests showing high thyroid radiation levels in Fukushima residents — Dose could be much greater

Published: March 10th, 2012 at 11:35 am ET
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Title: High thyroid radiation levels found in Fukushima residents
Source: Asahi AJW
Author: YURI OIWA/ Staff Writer
Date: March 09, 2012

  • 65 Fukushima Prefecture residents who were examined by a team of researchers [...] at Hirosaki University’s Institute of Radiation Emergency Medicine
  • Detected radioactive iodine in 50 residents, nearly 80 percent
  • Five residents were above [...] 50-millisievert
  • Maximum reading of 87 millisieverts
  • Highest reading among children was 47 millisieverts
  • Levels of 24 residents, or about half, were 10 millisieverts or less [24 of 65 = half?]

Professor Shinji Tokonami, who led the research team

  • “Levels could have exceeded 100 millisieverts if infants had stayed in a district with a high iodine concentration”
  • “The central and local governments need to provide thorough care to protect the health of children”

Gen Suzuki, head of the clinic of the International University of Health and Welfare

  • It is time to re-evaluate the reality of thyroid radiation because a number of data, albeit piecemeal, have recently become available
  • “The government should have conducted accurate examinations of thyroid radiation immediately after the accident”

Yoshio Hosoi, professor at Hiroshima University’s Research Institute for Radiation Biology and Medicine

  • “The research is valuable because it is based on measurement data more detailed than the government’s, although iodine 132, whose half-life is two hours, is not considered
  • Examinations need to be considered also for adults, citing an epidemiological survey that found increased thyroid cancer risks among people 40 years old or older after the Chernobyl accident.

Read the report here

More on Iodine-132: Absorbed radiation dose of iodine-132 was 10 times higher than iodine-131 in Northern Japan after Fukushima meltdowns -- Plus iodine-132 is 9 times more 'effective' at irradiating thyroid

Published: March 10th, 2012 at 11:35 am ET
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