Title :
Gold electrode sensors for electrical impedance tomography (EIT) studies
Author :
Bera, Tushar Kanti ; Nagaraju, J.
Author_Institution :
Dept. of Instrum. & Appl. Phys., Indian Inst. of Sci., Bangalore, India
Abstract :
Surface electrodes in EIT phantoms usually reduce the SNR of the boundary data due to their design and development errors. A novel gold electrode array with high geometric precision is developed for 2D electrical impedance tomography to increase the SNR of boundary data. Gold thin films are deposited on a flexible FR4 sheet using electro-deposition process to make a sixteen electrode array with electrodes of identical geometry. Boundary data are collected using a USB based high speed data acquisition system in a LabVIEW platform and the data are compared. Results show that the SNR of the boundary potentials obtained with gold electrode array is higher than that of a stainless steel array. Resistivity images reconstructed using EIDORS showed that the image quality is improved with gold electrode array.
Keywords :
electric impedance imaging; electrochemical electrodes; electrodeposition; gold; image reconstruction; metallic thin films; phantoms; 2D gold thin film; Au; EDDORS; EIT study; LabVIEW platform; SNR; USB; electrical impedance tomography study; electro-deposition process; electrode array; gold electrode sensor; high geometric precision; high speed data acquisition system; image quality; resistivity image reconstruction; Arrays; Electrodes; Gold; Impedance; Phantoms; Steel; Tomography; EIDORS; EIT; electrical impedance tomography; gold electrode array; phantom; reconstructed image;
Conference_Titel :
Sensors Applications Symposium (SAS), 2011 IEEE
Conference_Location :
San Antonio, TX
Print_ISBN :
978-1-4244-8063-0
DOI :
10.1109/SAS.2011.5739810
