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Radiology Diagnostic Devices Under Emergency Electric Power at Disaster Base Hospitals During the Acute Phase of the Great East Japan Earthquake: Results of a Survey of All Disaster Base Hospitals in Miyagi Prefecture

  • Shota Maezawa (a1), Daisuke Kudo (a1) (a2), Hajime Furukawa (a1) (a3), Atsuhiro Nakagawa (a1) (a4), Satoshi Yamanouchi (a1) (a2), Takashi Matsumura (a1), Shinichi Egawa (a5), Teiji Tominaga (a4) and Shigeki Kushimoto (a1) (a2)...



This study aimed to clarify the management of emergency electric power and the operation of radiology diagnostic devices after the Great East Japan Earthquake.


Timing of electricity restoration, actual emergency electric power generation, and whether radiology diagnostic devices were operational and the reason if not were investigated through a questionnaire submitted to all 14 disaster base hospitals in Miyagi Prefecture in February and March 2013.


Commercial electricity supply resumed within 3 days after the earthquake at 13 of 14 hospitals. Actual emergency electric power generation was lower than pre-disaster estimates at most of the hospitals. Only 4 of 11 hospitals were able to generate 60% of the power normally consumed. Under emergency electric power, conventional X-ray and computed tomography (CT) scanners worked in 9 of 14 (64%) and 8 of 14 (57%) hospitals, respectively. The main reason conventional X-ray and CT scanners did not operate was that hospitals had not planned to use these devices under emergency electric power. Only 2 of the 14 hospitals had a pre-disaster plan to allocate emergency electric power, and all devices operated at these 2 hospitals.


Pre-disaster plans to allocate emergency electric power are required for disaster base hospitals to effectively operate radiology diagnostic devices after a disaster. (Disaster Med Public Health Preparedness. 2014;8:548-552)


Corresponding author

Correspondence and reprint requests to Daisuke Kudo, MD, PhD, Division of Emergency and Critical Care Medicine, Tohoku University Graduate School of Medicine, Department of Emergency and Critical Care Medicine/Emergency Center Tohoku University Hospital, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan (e-mail:


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Drs Maezawa and Kudo contributed equally to the study.



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Supplementary materials

Maezawa Supplementary Material
Table S1

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