title: Respiratory magnetogram detected with a MEMS device.
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.
authors.affiliation: 1. Research Center for Micro and Nano Technology, Universidad Veracruzana, Calzada Adolfo Ruíz Cortines 455, 94294, Boca del Río, Ver., Mexico.
authors.forename: Saul M
authors.initials: SM
authors.lastname: Dominguez-Nicolas
authors.forename: Raul
authors.initials: R
authors.lastname: Juarez-Aguirre
authors.forename: Agustin L
authors.initials: AL
authors.lastname: Herrera-May
authors.forename: Pedro
authors.initials: P
authors.lastname: Garcia-Ramirez
authors.forename: Eduard
authors.initials: E
authors.lastname: Figueras
authors.forename: Edmundo A
authors.initials: EA
authors.lastname: Gutierrez-D
authors.forename: Jesus A
authors.initials: JA
authors.lastname: Tapia
authors.forename: Argelia
authors.initials: A
authors.lastname: Trejo
authors.forename: Elias
authors.initials: E
authors.lastname: Manjarrez
mesh_terms: D000818:Animals; D004594:Electrophysiology / Q000379:methods; D008297:Male; D055617:Micro-Electrical-Mechanical Systems / Q000379:methods*; D051381:Rats; D017207:Rats, Sprague-Dawley; D012119:Respiration
keywords: magnetocardiogram; magnetometer.; respiration; ribs; thoracic cage; thoracic muscles
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