| 摘要 |
A method and a system for electrical impedance tomography are provided to reduce a digital clock noise by radially and symmetrically arranging volt-meters which are connected to analog and digital mother boards. A system for electrical impedance tomography includes plural electrodes(250), a current source(230), a first board(240), plural volt-meters(260), a main controller(210), and a second board(220). The electrodes are attached to an object to be measured. The first board includes plural switches for selectively supplying currents to at least one electrode pair. The volt-meter detects a voltage on a surface of the object, removes a noise from a detected voltage, and amplifies the detected voltage. The main controller selects the electrode pair and collects an amplification ratio of the volt-meter and the detected voltage. The second board controls the current source, the first board, the volt-meters, and the main controller.
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