| 摘要 |
<p>The biological tissues under study are irradiated with an electro-magnetic flux in the form of radio-frequency pulses having a central spectrum frequency of from 0.5 to 10 GHz, whereupon a spatial position of the moving boundary between the biological tissues is determined from the phase shift of the return signal. The device for carrying the study includes a probing pulse shaper (1), a transmitting antenna (2), a receiving antenna (3), a return signal measuring unit (4) incorporating a stroboscopic range sweep detector (6) connected to the receiving asntenna (3), and a pulse recording unit (5) connected to the measuring unit (4). The radiation emanating from the antenna (2) may be polarized to suit the biological tissue under study.</p> |
