title: Noise and spatial resolution of a real-time electrical impedance tomograph.
abstract: The Sheffield real-time electrical impedance tomograph produces 25 images per second, using 16 electrodes with adjacent-pair current drive and non-iterative image reconstruction. We describe the data acquisition timing of this instrument and present quantitative measurements of its signal-to-noise ratio and spatial resolution.
authors.affiliation: Department of Medical Physics and Clinical Engineering, Royal Hallamshire Hospital, Sheffield, UK.
authors.forename: A M
authors.initials: AM
authors.lastname: Sinton
authors.forename: B H
authors.initials: BH
authors.lastname: Brown
authors.forename: D C
authors.initials: DC
authors.lastname: Barber
authors.forename: F J
authors.initials: FJ
authors.lastname: McArdle
authors.forename: A D
authors.initials: AD
authors.lastname: Leathard
mesh_terms: D004553:Electric Conductivity; D006801:Humans; D014054:Tomography / Q000295:instrumentation / Q000379:methods*