| 摘要 |
<p>The electric mammograph is an electrical impedance tomograph device for obtaining three-dimensional images of the conductivity distribution in biological tissues. A planar array of electrodes (1) is put in contact with the tissues of interest. An AC source (4) is connected to a single remotely attached electrode (5, 7) and to one of the planar array electrodes (1). Potential differences between the at rest electrodes in the planar array and a second remote at rest electrode (7, 5) are measured. The images are reconstructed using a modified back projection method.</p> |
