In the case of using an analog buffer circuit, an input voltage is required to be added a voltage equal to a voltage between the gate and source of a polycrystalline silicon TFT; therefore, a power supply voltage is increased, thus a power consumption is increased with heat. It is possible to observe the only receiving signal by observing differential signals D, D at the cable side 30 by a receiving trigger signal RTG with an oscilloscope 40. The device is able to objectively detect presence of lesions suspicious for cancer or other breast pathologies in the breast and provide means for computerized three-dimensional mechanical imaging of the breast.