TY - JOUR
T1 - Numerical modelling errors in electrical impedance tomography
AU - Dehghani, H
AU - Soleimani, M
N1 - ID number: ISI:000247964100005
PY - 2007
Y1 - 2007
N2 - Electrical impedance tomography (EIT) is a non- invasive technique that aims to reconstruct images of internal impedance values of a volume of interest, based on measurements taken on the external boundary. Since most reconstruction algorithms rely on model-based approximations, it is important to ensure numerical accuracy for the model being used. This work demonstrates and highlights the importance of accurate modelling in terms of model discretization (meshing) and shows that although the predicted boundary data from a forward model may be within an accepted error, the calculated internal field, which is often used for image reconstruction, may contain errors, based on the mesh quality that will result in image artefacts.
AB - Electrical impedance tomography (EIT) is a non- invasive technique that aims to reconstruct images of internal impedance values of a volume of interest, based on measurements taken on the external boundary. Since most reconstruction algorithms rely on model-based approximations, it is important to ensure numerical accuracy for the model being used. This work demonstrates and highlights the importance of accurate modelling in terms of model discretization (meshing) and shows that although the predicted boundary data from a forward model may be within an accepted error, the calculated internal field, which is often used for image reconstruction, may contain errors, based on the mesh quality that will result in image artefacts.
U2 - 10.1088/0967-3334/28/7/s04
DO - 10.1088/0967-3334/28/7/s04
M3 - Article
SN - 0967-3334
VL - 28
SP - S45-S55
JO - Physiological Measurement
JF - Physiological Measurement
IS - 7
ER -