Data collection for electrical impedance tomography
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Abstract
The invention refers to a method for carrying out data collection on electrodes placed on a body for subsequent processing of an electrical impedance tomography image of a corresponding part of said body. In order to improve the resolution of electrical impedance tomography systems without noticeably affecting the signal-to-noise ratio, the method according to the invention comprises the steps of placing the electrodes on a peripheral line around the body, applying a current pattern from a current source to at least one pair of electrodes, and measuring differential potentials between pairs of electrodes, wherein at least one intermediate electrode lies in between each pair of electrodes for measuring the differential potentials and the differential potentials of one current pattern for the subsequent image processing refer to at least three different pairs of electrodes with no electrode used more than twice for each current pattern.
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Citations
20 Claims
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1-10. -10. (canceled)
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11. Method for carrying out data collection on electrodes placed on a body for subsequent processing of an electrical impedance tomography image of a corresponding part of said body by means of a reconstruction algorithm, comprising the steps of:
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placing the electrodes on a peripheral line around the body, applying a current pattern from a current source to at least one pair of electrodes, and measuring differential potentials between pairs of electrodes, wherein at least one intermediate electrode lies in between each pair of electrodes for measuring the differential potentials, the differential potentials of one current pattern for the subsequent image processing refer to at least three different pairs of electrodes with no electrode used more than twice for each current pattern, and the data collection is subject to some spatial overlap information which is accounted for by the reconstruction algorithm. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification