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METHOD AND APPARATUS FOR ACQUIRING SIGNALS FOR ELECTRICAL IMPEDANCE TOMOGRAPHY
专利权人:
TIMPEL S.A.
发明人:
MAKTURA, EDWARD, LAZO,LIMA, CELSO, GONZALEZ
申请号:
EP13871235
公开号:
EP2944253A4
申请日:
2013.01.09
申请国别(地区):
EP
年份:
2016
代理人:
摘要:
The method of the invention comprises the stages of injecting an alternating signal AC (carrier) into at least one electrode positioned on the skin of the patient in a region of interest, measuring the signal induced into at least one electrode, extracting at least an envelope of the signal measured and determining the difference between said envelope and a reference signal. Said envelope may be extracted by demodulating the signal measured, and this demodulation may be carried out by way of an associated rectifier diode, in a preferred embodiment, and an RC filter. The reference signal may be an envelope corresponding to the demodulated signal of another electrode, the injected signal, earth or a fixed voltage value.
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