ELECTRICAL IMPEDANCE TOMOGRAPHY EQUIPMENT

摘要

There is described an electrical impedance tomography equipment, intended for providing images representing the inside of a portion of the body of a patient by means of electrical impedance measurements taken between electrodes positioned on the skin, comprising a plurality of acquisition units (15, 27) provided with circuits for processing low level analog signals picked up by the cables (13, 29) that interconnect the said equipment with the electrodes (14) applied to the patient, the said acquisition units being substantially symmetrically arranged to provide as a result a substantially equal irradiation of the heat generated in these units, easing the calibration of the analog channels and common mode rejection. The equipment further comprises at least one plane constituted by a printed circuit board whereto the said units are electrically connected, the said plane comprising complementary elements and devices, such as the electrical connection terminals for the said cables.