Study on heart rate fluctuation by the stress to occur at MR imaging

• Project/Area Number: 15K11471
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Fundamental nursing
• Research Institution: Ibaraki Prefectural University of Health Science
• Principal Investigator: Monma Masahiko 茨城県立医療大学, 保健医療学部, 教授 (10274987)
• Co-Investigator(Kenkyū-buntansha): 川野 道宏 茨城県立医療大学, 保健医療学部, 准教授 (00404905) ; 石森 佳幸 茨城県立医療大学, 保健医療学部, 准教授 (30401970)
• Project Period (FY): 2015-04-01 – 2019-03-31
• Project Status: Completed (Fiscal Year 2018)
• Budget Amount: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000); Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2016: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000); Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: MRI検査 / 心理的苦痛 / 心拍変動

Outline of Final Research Achievements

By presenting images and music to 19 healthy volunteers, each heart rate fluctuation was analyzed before and during the MRI examination (with and without image viewing). While quantifying using CV-RR value, L / T value, and FStress value, examination using subjective assessment by questionnaire was also conducted.
From the three indices of CV-RR value, L / T value, and FStress value obtained in heart rate variability analysis, it was found that the stress at the time of MRI examination is reduced by performing the video viewing.18 out of 19 subjects became more comfortable (9 people), or rather more comfortable (9 people), compared to when they did not watch the video during the examination.

Academic Significance and Societal Importance of the Research Achievements

MRI装置の導入が急速に広がり、画像診断の中でMRI検査は日常的な検査になってき
た。MRI装置の進歩は必然的に高い騒音や比吸収率（SAR：Specific Absorption Rate）、高磁場特有の浮遊感等が身体に影響を及ぼす。さらに狭いガントリ内では、閉所に閉じ込められることによる圧迫感、空気の流通具合、検査台の硬さや振動、検査時の長い拘束時間、ベルトによる身体固定が心理的苦痛をもたらす。本研究においては、新たに「ＭＲＩ検査時に生じるストレスに起因する自律神経活動を捉えることにより、適切なストレスの緩和策を検討し、ストレスに対する有効な対応策を提唱することである。

Research Products

• [Presentation] Effect of Fragrance in Lowering Psychological Stress during MR Imaging (2017)
  • Author(s): Masahiko Monma, Naho Mitimura, Suzuka Wakui, Rika Kikuti, Hiraku Kawamura, Mitihiro Kawano, Yoshiyuki Ishimori
  • Organizer: The Society for MR Radiographers & Technologists（SMRT）26th annual meeting
  • Int'l Joint Research
• [Presentation] - Psychological Stress in Patients Undergoing MR Imaging -Plethysmogram analysis (2016)
  • Author(s): Masahiko Monma, Rika Kikuti, Naho Mitimura, Suzuka Wakui, Yoshikazu Shimada, Hiraku Kawamura, Yoshiyuki Ishimori, Mitihiro Kawano
  • Organizer: 第44回日本磁気共鳴医学会大会
  • Place of Presentation: 大宮
  • Year and Date: 2016-09-09
• [Presentation] ＭＲＩ検査時に生じるストレス反応 (2016)
  • Author(s): 門間正彦，菊池梨花，道村奈朋，泉井鈴香，嶋田芳和，川村拓，川野道宏，石森佳幸
  • Organizer: 第18回日本感性工学会大会
  • Place of Presentation: 東京