title: Pulsed gradient analysis using a dedicated magnetometer.
abstract: In magnetic resonance imaging and spectroscopy, knowledge of the magnetic field gradient behavior is very important. This work describes a simple way to characterize the temporal and spatial dependence of the main magnetic field when a gradient is switched. Records are performed with a home-built magnetometer. This device is controlled by a personal computer for recording and processing the NMR signals from an array of small probes spatially distributed and switched by the magnetometer. We present results of measurements on a 2-T superconducting magnet. These results show the residual defects of an active shielded gradient coils system.
authors.affiliation: Laboratoire de Résonance Magnétique Nucléaire, UCB Lyon, Villeurbanne, France.
authors.forename: P
authors.initials: P
authors.lastname: Desgoutte
authors.forename: L
authors.initials: L
authors.lastname: Chaabane
authors.forename: B
authors.initials: B
authors.lastname: Favre
authors.forename: A
authors.initials: A
authors.lastname: Deguin
authors.forename: C
authors.initials: C
authors.lastname: Lapray
authors.forename: A
authors.initials: A
authors.lastname: Briguet
mesh_terms: D008279:Magnetic Resonance Imaging / Q000295:instrumentation*; D009682:Magnetic Resonance Spectroscopy / Q000295:instrumentation*; D008280:Magnetics