title: A parallel broadband real-time system for electrical impedance tomography.
abstract: This paper deals with the design, implementation and performance of TIE-4sys, an electrical impedance tomograph. This instrument is a parallel broad-band real-time system. It measures impedance using an array of 16 electrodes and reconstructs the images using a weighted back-projection technique. The objective of this development is to enable multifrequency EIT clinical studies to be undertaken. The system is capable of acquiring 25 frames/s and makes multifrequency cardiac-gated images. The frequency range is from 10 kHz to 250 kHz and the signal to noise ratio for the real component is better than 60 dB.
authors.affiliation: Department d'Enginyeria Electrònica, Universitat Politècnica de Catalunya, Barcelona, Spain.
authors.forename: O
authors.initials: O
authors.lastname: Casas
authors.forename: J
authors.initials: J
authors.lastname: Rosell
authors.forename: R
authors.initials: R
authors.lastname: Bragós
authors.forename: A
authors.initials: A
authors.lastname: Lozano
authors.forename: P J
authors.initials: PJ
authors.lastname: Riu
mesh_terms: D017097:Electric Impedance; D004566:Electrodes; D004582:Electronics, Medical / Q000295:instrumentation; D004867:Equipment Design; D006321:Heart / Q000502:physiology; D006801:Humans; D014054:Tomography / Q000295:instrumentation*