Electrical Impedance Tomography (EIT) can resolve dynamic physiological information deep within human subjects , but its sensitivity is challenged in the case of imaging the head . 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.
|Title of host publication||Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS|
|Publisher||Institute of Electrical and Electronics Engineers (IEEE)|
|Number of pages||4|
|Publication status||Published - 1 Dec 2011|