Noise and spatial resolution of a real-time electrical impedance tomograph.
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.
Sinton
A M
AM
Department of Medical Physics and Clinical Engineering, Royal Hallamshire Hospital, Sheffield, UK.
Brown
B H
BH
Barber
D C
DC
McArdle
F J
FJ
Leathard
A D
AD
D004553:Electric Conductivity; D006801:Humans; D014054:Tomography / Q000295:instrumentation / Q000379:methods*