Japanese Journal of Radiology

, Volume 33, Issue 10, pp 619–626 | Cite as

Changes in radiological imaging frequencies in children before and after the accident at the Fukushima Daiichi Nuclear Power Plant in Fukushima Prefecture, Japan

  • Koji Yoshida
  • Naomi Hayashida
  • Yoshiko Fukushima
  • Akira Ohtsuru
  • Takashi Ohba
  • Arifumi Hasegawa
  • Hisashi Sato
  • Fumio Shishido
  • Kiyotaka Yasui
  • Atsushi Kumagai
  • Takeshi Yusa
  • Takashi Kudo
  • Shunichi Yamashita
  • Noboru Takamura
Original Article



The accident at the Fukushima Daiichi Nuclear Power Plant has raised concerns about radiation exposure, including medical radiation exposure such as X-ray and CT, in residents of Fukushima.

Materials and methods

We compared the numbers and the ratio of outpatients less than 10 years old who underwent imaging examinations [e.g., CT, X-ray, MRI, ultrasonography (US), etc.] at Fukushima Medical University hospital in Fukushima, Japan before (April 1, 2008–March 31, 2011) and after (April 1, 2011–March 31, 2014) the accident.


The number of outpatients less than 10 years old decreased after the accident. The number of outpatients less than 10 years old who underwent CT and X-ray examinations also significantly decreased after the accident (p < 0.001, p < 0.01, respectively).


Our results suggest that the number of pediatric radiological examinations decreased after the accident in Fukushima. We should continue to communicate with patients and their families to ensure that they understand the risks and benefits of radiological imaging in order to overcome their concerns about the nuclear disaster.


Radiological examination Radiation exposure Fukushima Daiichi Nuclear Power Plant accident Fukushima Prefecture Children 


Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.


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Copyright information

© Japan Radiological Society 2015

Authors and Affiliations

  • Koji Yoshida
    • 1
    • 8
  • Naomi Hayashida
    • 2
  • Yoshiko Fukushima
    • 3
  • Akira Ohtsuru
    • 4
  • Takashi Ohba
    • 4
  • Arifumi Hasegawa
    • 5
  • Hisashi Sato
    • 6
  • Fumio Shishido
    • 7
  • Kiyotaka Yasui
    • 8
  • Atsushi Kumagai
    • 8
  • Takeshi Yusa
    • 9
  • Takashi Kudo
    • 10
  • Shunichi Yamashita
    • 11
  • Noboru Takamura
    • 12
  1. 1.Department of Global Health, Medicine and WelfareNagasaki University Graduate School of Biomedical SciencesNagasakiJapan
  2. 2.Division of Promotion of Collaborative Research on Radiation and Environment Health EffectsAtomic Bomb Disease Institute, Nagasaki UniversityNagasakiJapan
  3. 3.National Institute of Radiological SciencesChibaJapan
  4. 4.Department of Radiation Health ManagementFukushima Medical University School of MedicineFukushimaJapan
  5. 5.Department of Radiation Disaster MedicineFukushima Medical University School of MedicineFukushimaJapan
  6. 6.Department of Radiation OncologyFukushima Medical University School of MedicineFukushimaJapan
  7. 7.Department of RadiologyFukushima Medical University School of MedicineFukushimaJapan
  8. 8.Education Center for Disaster MedicineFukushima Medical UniversityFukushimaJapan
  9. 9.Department of Radiological TechnologyFukushima Medical University HospitalFukushimaJapan
  10. 10.Department of Radioisotope MedicineAtomic Bomb Disease Institute, Nagasaki UniversityNagasakiJapan
  11. 11.Department of Radiation Medical SciencesAtomic Bomb Disease Institute, Nagasaki UniversityNagasakiJapan
  12. 12.Department of Global Health, Medicine and WelfareAtomic Bomb Disease Institute, Nagasaki UniversityNagasakiJapan

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