[Survey report on magnetic resonance equipment damage in areas in Miyagi Prefecture affected by the Great East Japan Earthquake].

Fumio Maeyatsu, Yoshihiro Abe, Makoto Hishinuma, Takeo Hikiti, Hajime Tanji, Shinya Seino, Kojiro Adachi, Yasunori Musashi, Toshio Tuchihashi, Yosihio Machida, Sachiko Yamaguchi-Sekino, Toshiharu Nakai

Research output: Contribution to journalArticlepeer-review

Abstract

A questionnaire comprising 14 items, inquiring about the state of damage, whether safety could be ensured, and progress of repair and restoration was distributed to 984 facilities in seven prefectures on the Pacific coast as part of a fact-finding survey of damage caused to magnetic resonance (MR) devices by the Great East Japan Earthquake. In all, 458 responses (46.6%) were collected. In Miyagi Prefecture alone, 65 responses from 105 questionnaires were collected (response rate: 61.9%). The overall incidence of damage was 19.2%, with 57 facilities (12.4%) reporting that displacement of the magnets was the most common problem. The damage event rate in Miyagi Prefecture was 51.3%, with displacement of the magnet being highest at 17 cases (26.2%). There was a high rate of 13 cases (26.5%) of chiller and air conditioning failures and a rapid loss of He in ten MR scanners (20.4%). Notably, 87.8% of facilities in Miyagi Prefecture (24.5% of the total) were affected by earthquakes exceeding 6 on the Japanese Seismic Intensity Scale. Flood damage caused by the tsunami was also seen along the Sanriku coast to Sendai City (six MR scanners, 50% of the total), and was typical of the damage seen in Miyagi Prefecture.

Original languageEnglish
Pages (from-to)235-241
Number of pages7
JournalNihon Hoshasen Gijutsu Gakkai zasshi
Volume70
Issue number3
DOIs
Publication statusPublished - 2014 Mar

ASJC Scopus subject areas

  • Medicine(all)

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