Error comparison for different current patterns in electrical impedance imaging

Error comparison for different current patterns in electrical impedance imaging

Different current patterns used in electric-current computed tomography (ECCT) were compared for their sensitivity to noise. This comparison was made by examining the error produced in reconstructing one voltage pattern from measurements made using another. It was found that the adjacent-pair curren...

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Bibliographische Detailangaben
Hauptverfasser: Cheng, K.S., Isaacson, D., Newell, J.C., Gisser, D.G.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Biomedical imaging
Biomedical measurements
Computer errors
Current measurement
Electrodes
Equations
Image reconstruction
Imaging phantoms
Impedance
Voltage measurement
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Zusammenfassung:Different current patterns used in electric-current computed tomography (ECCT) were compared for their sensitivity to noise. This comparison was made by examining the error produced in reconstructing one voltage pattern from measurements made using another. It was found that the adjacent-pair current pattern is more sensitive to noise than spatial trigonometric current patterns. The measured spatial trigonometric voltage patterns were not degraded when a simulated electrode contact impedance was introduced.< >
DOI:10.1109/IEMBS.1988.94516