Title :
Sub-surface electrical conductivity imaging via contactless measurements
Author :
Gencer, N.G. ; Tek, M.N.
Author_Institution :
Dept. of Electr. & Electron. Eng., Middle East Tech. Univ., Ankara, Turkey
Abstract :
A new medical imaging modality is introduced to image electrical conductivity of living tissues via contactless measurements. A sensitivity matrix which relates the perturbation in magnetic field measurements to the conductivity perturbations is obtained for a coplanar 7×7-coil array placed nearby the upper surface of a 10×10×5 (cm) conductive body. Images are using truncated pseudo-inverse. It is observed that voxel perturbations at a 2 cm depth can be identified. However, resolution gradually decreases for deeper conductivity perturbations
Keywords :
bioelectric phenomena; biomedical imaging; electrical conductivity measurement; image resolution; magnetic field measurement; 2 cm; contactless measurements; coplanar 7×7-coil array; magnetic field measurements perturbation; medical diagnostic imaging; medical imaging modality; subsurface electrical conductivity imaging; truncated pseudo-inverse; voxel perturbations; Biological tissues; Biomedical imaging; Coils; Conductivity measurement; Contacts; Current measurement; Electric variables measurement; Magnetic field measurement; Matrix decomposition; Transmission line matrix methods;
Conference_Titel :
[Engineering in Medicine and Biology, 1999. 21st Annual Conference and the 1999 Annual Fall Meetring of the Biomedical Engineering Society] BMES/EMBS Conference, 1999. Proceedings of the First Joint
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-5674-8
DOI :
10.1109/IEMBS.1999.804283
