A portable instrument for high-speed brain function imaging: FEITER

H. McCann*, S.T. Ahsan, J.L. Davidson, R.L. Robinson, Paul Wright, C.J.D. Pomfrett

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Electrical Impedance Tomography (EIT) can resolve dynamic physiological information deep within human subjects [1], but its sensitivity is challenged in the case of imaging the head [2]. Here, we report a new system called fEITER that has been designed and built to enable functional imaging of the human brain using EIT via scalp-mounted electrodes, integrated with stimulation of evoked responses. Using Field-Programmable Gate Array (FPGA) technology, it provides excellent flexibility in terms of current-pattern excitation and signal processing. The instrument operates at 100 frames/second (fps) with noise of 1 V on the rms voltage measurements. Clinical trials have been authorized by the UK MHRA and example data from human subjects are presented.
Original languageEnglish
Title of host publicationProceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages4
ISBN (Electronic)978-1-4244-4122-8
ISBN (Print)978-1-4244-4121-1
Publication statusPublished - 1 Dec 2011


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