Work

Volume conductor effects on simulated magnetogastrograms

Year: 2009

Type: conference-paper

Abstract: We simulated the magnetic field due to gastric electrical activity (GEA) using a temporally and spatially moving dipole source. The contributions of the volume conductor to the total magnetic field were examined. The volume conductor was represented using three simplified models (free-space, spherical and half-space) and an anatomically realistic torso model. We compared the patterns and the directions of the resultant magnetic fields generated using these volume conductor models. We concluded that all the simplified models produced significantly different magnetic fields when compared to the anatomically realistic model. Therefore, an anatomically realistic model is necessary for any modeling studies to accurately calculate the magnetic fields from GEA.

Source: Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)

DOI: 10.1109/iembs.2009.5332716

Authors: Wenlian Qiao, R. Komuro, A.J. Pullan, L.K. Cheng

Institution: University of Auckland

Language: English

Topic: Gastrointestinal motility and disorders

Subfield: Gastroenterology

Field: Medicine

Domain: Health Sciences

Open Access status: green

Funders: Vanderbilt University, National Institute of Diabetes and Digestive and Kidney Diseases

Awards: Realistic models of gastrointestinal bioelectromagnetism, G582325614