Impedance Mammograph 3D Phantom Studies

Abstract: The results obtained using the Technical University of Gdansk Electroimpedance Mammograph (TUGEM) of a 3D phantom study are presented. The TUGEM system is briefly described. The hardware contains the measurement head and DSP‐based identification modules controlled by a PC computer. A specially developed reconstruction algorithm, Regulated Correction Frequency Algebraic Reconstruction Technique (RCFART), is used to obtain 3D images. To visualize results, the Advance Visualization System (AVS) is used. It allows a powerful image processing on a fast workstation or on a high‐performance computer. Results of three types of 3D conductivity perturbations used in the study (aluminum, Plexiglas, and cucumber) are shown. The relative volumes of perturbations less than 2% of the measurement chamber are easily evidenced.

[1]  C. Boulay,et al.  An experimental study in electrical impedance tomography using backprojection reconstruction , 1991, IEEE Transactions on Biomedical Engineering.

[2]  C. Davis,et al.  Impedance spectroscopy of human erythrocytes: system calibration, and nonlinear modeling , 1993, IEEE Transactions on Biomedical Engineering.

[3]  D S Holder,et al.  Use of polyacrylamide gels in a saline-filled tank to determine the linearity of the Sheffield Mark 1 electrical impedance tomography (EIT) system in measuring impedance disturbances. , 1994, Physiological measurement.

[4]  G.J. Saulnier,et al.  ACT3: a high-speed, high-precision electrical impedance tomograph , 1991, IEEE Transactions on Biomedical Engineering.

[5]  B. Brown,et al.  Applied potential tomography: possible clinical applications. , 1985, Clinical physics and physiological measurement : an official journal of the Hospital Physicists' Association, Deutsche Gesellschaft fur Medizinische Physik and the European Federation of Organisations for Medical Physics.

[6]  M. E. Glidewell,et al.  Anatomically constrained electrical impedance tomography for three-dimensional anisotropic bodies , 1997, IEEE Transactions on Medical Imaging.

[7]  H Griffiths,et al.  A Cole phantom for EIT. , 1995, Physiological measurement.

[8]  D S Holder,et al.  Some practical biological phantoms for calibrating multifrequency electrical impedance tomography. , 1996, Physiological measurement.

[9]  D C Barber,et al.  Three-dimensional image reconstruction for electrical impedance tomography. , 1996, Physiological measurement.