Title :
Magnetic markers as a noninvasive tool to monitor gastrointestinal transit
Author :
Weitschies, W. ; Wedemeyer, J. ; Stehr, R. ; Trahms, L.
Author_Institution :
Inst. of Pharmacy, Freie Univ. Berlin, Germany
Abstract :
A novel method to monitor gastrointestinal transit of solid oral dosage forms or nutrients is presented, providing a simultaneous recording of gastrointestinal motility of the traversed section. Based on the measurement of the magnetic field of an ingested magnetized marker, its location is found by fitting a magnetic dipole field to the measured data.
Keywords :
biomagnetism; patient monitoring; gastrointestinal motility; gastrointestinal transit monitoring; ingested magnetized marker; magnetic dipole field; magnetic field measurement; magnetic markers; noninvasive tool; nutrients; solid oral dosage forms; Gastrointestinal tract; In vivo; Magnetic field measurement; Magnetic materials; Magnetic moments; Magnetic shielding; Monitoring; Solids; Superconducting magnets; Testing; Gastrointestinal Motility; Gastrointestinal Transit; Humans; Magnetics; Male; Models, Biological; Monitoring, Physiologic; Reference Values;
Journal_Title :
Biomedical Engineering, IEEE Transactions on
