Time-varying current density distributions in the human heart and brain.
A new method for visualizing and postprocessing three-dimensional time varying vector fields is presented. This method is based on equivalent ellipsoids fitted to these fields. The new technique has been tested on vector fields representing current density reconstruction results based on biomagnetic data from a cardiac patient and a neurological patient. Multiple foci in the vector fields are extracted by multiple ellipsoids which are fitted in an iterative manner. The new method enables visualization of even very complex vector fields, as well as statistical postprocessing.
Haueisen
Jens
J
Biomagnetic Center, Friedrich-Schiller University Jena, Germany. haueisen@biomag.uni-jena.de
Ziolkowski
Marek
M
Leder
Uwe
U
D001921:Brain / Q000033:anatomy & histology* / Q000502:physiology*; D004562:Electrocardiography; D004574:Electromagnetic Fields; D006321:Heart / Q000033:anatomy & histology* / Q000502:physiology*; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008279:Magnetic Resonance Imaging; D015225:Magnetoencephalography; D008881:Migraine Disorders / Q000503:physiopathology; D008955:Models, Cardiovascular; D008959:Models, Neurological