Assessment and calibration of a low-frequency system for electrical impedance tomography (EIT), optimized for use in imaging brain function in ambulant human subjects

Annals of the New York Academy of Sciences

Volumn 873, Issue , 1999, Pages 512-519

  Holder, D S ^a   Gonzalez Correa C A ^b   Tidswell, T ^a   Gibson, A ^a   Cusick, G ^a   Bayford, R H ^a,c  

^a UNIVERSITY COLLEGE LONDON   (United Kingdom)

^b UNIVERSIDAD DE CALDAS   (Colombia)

^c MIDDLESEX UNIVERSITY   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

POTASSIUM CHLORIDE;

AMBULATORY MONITORING; BRAIN FUNCTION; BRAIN TOMOGRAPHY; CALIBRATION; COMPUTER ASSISTED IMPEDANCE TOMOGRAPHY; CONFERENCE PAPER; CONTROLLED STUDY; CUCUMBER; EVALUATION; SIGNAL NOISE RATIO; SKIN ELECTRODE;

EID: 0033049822     PISSN: 00778923     EISSN: None     Source Type: Book Series    
DOI: 10.1111/j.1749-6632.1999.tb09500.x     Document Type: Conference Paper

References (14)

1. 1. Holder, D.S. 1992. Electrical impedance tomography with cortical or scalp electrodes during global cerebral ischaemia in the anaesthetised rat. Clin. Phys. Physiol. Meas. 13: 87-98.
2. 2. Boone, K., A.M. Lewis & D.S. Holder. 1994. Imaging of cortical spreading depression by EIT: implications for localisation of epileptic foci. Physiol. Meas. 15: A189-A198.
3. 3. Holder, D.S., A. Rao & Y. Hanquan. 1996. Imaging physiologically evoked responses by electrical impedance tomography with cortical electrodes in the anaesthetised rabbit. Physiol. Meas. 17: A179-A186.
4. 4. Rao, A., A. Gibson & D.S. Holder. 1997. EIT images of electrically induced epileptic activity in anaesthetised rabbits. Med. Biol. Eng. Comput. 35(suppl.): 327.
5. 5. Holder, D.S. 1993. Opportunities for EIT imaging in the nervous system. In Clinical and Physiological Applications of Electrical Impedance Tomography, p. 166-175. UCL Press. London.
6. 6. Holder, D.S., K. Boone & G. Cusick. 1994. Specification for an electrical impedance tomogram for imaging epilepsy in ambulatory human subjects. Innov. Technol. Biol. Med. 15(SI 1): 33-39.
7. 7. Cusick, G., D.S. Holder, A. Birkett & K. Boone. 1994. A system for impedance imaging of epilepsy in ambulatory human subjects. Innov. Technol. Biol. Med. 15(SI 1): 40-46.
8. 8. Ranck, J.B. 1964. Specific impedance of cerebral cortex during spreading depression, and an analysis of neuronal, neuroglial, and interstitial contribution. Exp. Neurol. 9: 1-16.
9. 9. Bayford, R.H., K.G. Boone, Y. Hanquan & D.S. Holder. 1996. Improvement of the positional accuracy of electrical impedance tomography (EIT) images of the head using a Lagrange multiplier reconstruction algorithm with diametric excitation. Physiol. Meas. 17: A49-A57.
10. 10. Ragheb, T. & L.A. Geddes. 1990. Electrical properties of metallic electrodes. Med. Biol. Eng. Comput. 28: 182-186.
11. 11. Holder, D.S., Y. Hanquan & A. Rao. 1996. Some practical biological phantoms for calibrating multifrequency electrical impedance tomography. Physiol. Meas. 17: A167-A177.
12. 12. Rosell, J., J. Colominas, P. Riu, R. Pallas-Areny & J.G. Webster. 1988. Skin impedance from 1 Hz to 1 MHz. IEEE Trans. Biomed. Eng. 35: 649-651.
13. 13. Boone, K.G. & D.S. Holder. 1996. Current approaches to analogue instrumentation design in electrical impedance tomography. Physiol. Meas. 17: 229-247.
14. 14. Holder, D.S. & A. Khan. 1994. 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. Physiol. Meas. 15: A45-A50.