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Int J Med Sci. 2013 Aug 27;10(11):1445-50. doi: 10.7150/ijms.4732. eCollection 2013.

Respiratory magnetogram detected with a MEMS device.

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1
1. Research Center for Micro and Nano Technology, Universidad Veracruzana, Calzada Adolfo Ruíz Cortines 455, 94294, Boca del Río, Ver., Mexico.

Abstract

Magnetic fields generated by the brain or the heart are very useful in clinical diagnostics. Therefore, magnetic signals produced by other organs are also of considerable interest. Here we show first evidence that thoracic muscles can produce a strong magnetic flux density during respiratory activity, that we name respiratory magnetogram. We used a small magnetometer based on microelectromechanical systems (MEMS), which was positioned inside the open thoracic cage of anaesthetized and ventilated rats. With this new MEMS sensor of about 20 nT resolution, we recorded a strong and rhythmic respiratory magnetogram of about 600 nT.

KEYWORDS:

magnetocardiogram; magnetometer.; respiration; ribs; thoracic cage; thoracic muscles

PMID:
24046516
PMCID:
PMC3775099
DOI:
10.7150/ijms.4732
[Indexed for MEDLINE]
Free PMC Article
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