B. Rigaud et al., EXPERIMENTAL ACQUISITION-SYSTEM FOR IMPEDANCE TOMOGRAPHY WITH ACTIVE ELECTRODE APPROACH, Medical & biological engineering & computing, 31(6), 1993, pp. 593-599
An experimental system for impedance tomography has been constructed.
The acquisition system uses 16 multifunctional active electrodes, each
including a current source and a voltage buffer. Images of active and
reactive parts of different target impedances in a phantom filled wit
h liquid have been obtained. The system performance has been compared
with those of other systems using either a mesh phantom or rods as poi
nt sources used for the determination of the modulation transfer funct
ion.