Communications Physics (Aug 2022)

Millimetre-scale magnetocardiography of living rats with thoracotomy

  • Keigo Arai,
  • Akihiro Kuwahata,
  • Daisuke Nishitani,
  • Ikuya Fujisaki,
  • Ryoma Matsuki,
  • Yuki Nishio,
  • Zonghao Xin,
  • Xinyu Cao,
  • Yuji Hatano,
  • Shinobu Onoda,
  • Chikara Shinei,
  • Masashi Miyakawa,
  • Takashi Taniguchi,
  • Masatoshi Yamazaki,
  • Tokuyuki Teraji,
  • Takeshi Ohshima,
  • Mutsuko Hatano,
  • Masaki Sekino,
  • Takayuki Iwasaki

DOI
https://doi.org/10.1038/s42005-022-00978-0
Journal volume & issue
Vol. 5, no. 1
pp. 1 – 10

Abstract

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Causes of heart failure can be investigated by tracing imperfections in electrical current propagation on the millimetre scale; however, the spatial resolution of current magnetocardiograph methods are limited to the centimetre-scale. Here, the authors report a millimetre-scale nitrogen vacancy-based quantum sensing to measure the magnetic field generated by the heart of a living rat, from which the cardiac electrical currents can be extrapolated.