| 摘要 |
<p>A method of determining accurate values of acoustic parameters of tissues, comprising: transmitting first acoustic energy through the tissue along a path in a first direction; acquiring a first reflection signal generated by said tissue along said path from the transmitted first acoustic energy; transmitting second acoustic energy through the tissue along the path in a second direction opposite from the first direction; acquiring a second reflection signal generated by said tissue along said path from the transmitted second acoustic energy; and generating one or more of values of attenuation along the path, velocity of acoustic energy along the path, acoustic impedance of materials along the path and reflection along the path, responsive to both the first and second acquired reflection signals.</p> |
