System for Electrical Impedance Tomography and Method Thereof
First Claim
1. A method of electrical impedance tomography, comprising the steps of:
- injecting a current to a measurement target via at least one electrode pair selected from a plurality of electrodes attached to the measurement target;
detecting voltage of a surface of the measurement target using a plurality of voltmeters connected to the electrodes that are not selected, respectively;
adjusting gains of the voltmeters according to maximum values of the detected voltages, respectively;
amplifying the detected voltages using the gain-adjusted voltmeters, respectively; and
imaging an internal part of the measurement target based on the amplified voltages.
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Abstract
A system for electrical impedance tomography and method thereof are disclosed, by which electrical characteristics within a measurement target can be precisely detected. The present invention includes the steps of injection a current to a measurement target via at least one electrode pair selected form a plurality of electrodes (250) attached to the measurement target, detecting voltage of a surface of the measurement target using a plurality of voltmeters (260) connected to the electrodes that are not selected, respectively, adjusting gains of the voltmeters according to maximum values of the detected voltages, respectively, amplifying the detected voltages using the gain-adjusted voltmeters, respectively, and imaging an internal part of the measurement target based on the amplified voltages.
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Citations
17 Claims
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1. A method of electrical impedance tomography, comprising the steps of:
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injecting a current to a measurement target via at least one electrode pair selected from a plurality of electrodes attached to the measurement target; detecting voltage of a surface of the measurement target using a plurality of voltmeters connected to the electrodes that are not selected, respectively; adjusting gains of the voltmeters according to maximum values of the detected voltages, respectively; amplifying the detected voltages using the gain-adjusted voltmeters, respectively; and imaging an internal part of the measurement target based on the amplified voltages. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system for electrical impedance tomography, comprising:
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a plurality of electrodes attached to a measurement target for current injection and voltage detection; a current source supplying a current to a plurality of the electrodes; a board including a plurality of switches to selectively provide the current to at least one selected electrode pair from the current source; a plurality of voltmeters detecting voltages of a surface of the measurement target via the electrodes not selected, the voltmeters amplifying the detected voltages after adjusting amplification rates of the detected voltages according to maximum values of the detected voltages; and a main controller imaging an internal part of the measurement target based on the amplified voltages. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification