| 摘要 |
<p>A way of determining a value for at least one parameter that characterizes propagation of sound in a body part (22) by way of transmitting ultrasound pulses at each of a plurality of different distinct carrier frequencies through the body part (22); detecting the pulses after they are transmitted through the body part (22) and generating signals responsive thereto; and processing the signals responsive to pulses at each of the carrier frequencies to determine a value for at least one parameter that characterizes propagation of ultrasound in the body part (22).</p> |
