NDLI: A Viergever, Propagation of measurement noise through backprojection reconstruction in electrical impedance tomography (2002)

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A Viergever, Propagation of measurement noise through backprojection reconstruction in electrical impedance tomography (2002)

Content Provider	CiteSeerX
Author	Frangi, Ro F. Riu, Pere J. Rosell, Javier Viergever, Max A.
Abstract	Abstract—A framework to analyze the propagation of mea-surement noise through backprojection reconstruction algorithms in electrical impedance tomography (EIT) is presented. Two measurement noise sources were considered: noise in the current drivers and in the voltage detectors. The influence of the acqui-sition system architecture (serial/semi-parallel) is also discussed. Three variants of backprojection reconstruction are studied: basic (unweighted), weighted and exponential backprojection. The results of error propagation theory have been compared with those obtained from simulated and experimental data. This comparison shows that the approach provides a good estimate of the reconstruction error variance. It is argued that the recon-struction error in EIT images obtained via backprojection can be approximately modeled as a spatially nonstationary Gaussian distribution. This methodology allows us to develop a spatial characterization of the reconstruction error in EIT images. Index Terms—Backprojection reconstruction, electrical impe-dance tomography, error propagation theory, reconstruction error characterization. I.
File Format	PDF
Journal	IEEE Trans on Medical Imaging
Language	English
Publisher Date	2002-01-01
Access Restriction	Open
Subject Keyword	Electrical Impedance Tomography Backprojection Reconstruction Measurement Noise Error Propagation Theory Eit Image Electrical Impe-dance Tomography Mea-surement Noise Measurement Noise Source Reconstruction Error Variance Serial Semi-parallel Recon-struction Error Index Term Backprojection Reconstruction Backprojection Reconstruction Algorithm Exponential Backprojection Acqui-sition System Architecture Nonstationary Gaussian Distribution Reconstruction Error Reconstruction Error Characterization Experimental Data Current Driver Good Estimate Voltage Detector Spatial Characterization
Content Type	Text
Resource Type	Article

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