Paixao, F. C. [UNESP]Quini, C. C. [UNESP]Bradshaw, L. A.Richards, W. O.Baffa, O.Miranda, J. R A [UNESP]2014-05-272014-05-272013-04-16IFMBE Proceedings, v. 39 IFMBE, p. 1389-1392.1680-0737http://hdl.handle.net/11449/75123A hybrid magnetic instrumentation to detect a magnetic field from a permanent magnet, and to detect magnetic markers and tracers using alternating current biosusceptometry (ACB) is discussed. The instrument was used to in vitro evaluation of the esophageal transit time. The sensitivity between both magnetic methods was compared, showing sensitivity for in vivo applications. © 2013 Springer-Verlag.1389-1392engAC biosusceptometryEsophagusMagnetic markerMagnetorresistorNon-invasiveTransit timeBiosusceptometryBiomedical engineeringMagnetic devicesPhysicsTrabalho apresentado em evento10.1007/978-3-642-29305-4_365Acesso aberto2-s2.0-84876051717