Determining Mechanical Properties via Ultrasound-Induced Resonance

摘要

A device for estimating a mechanical property of a sample is disclosed herein. The device may include a chamber configured to hold the sample; a transmitter configured to transmit a plurality of waveforms, including at least one forcing waveform; and a transducer assembly operatively connected to the transmitter and configured to transform the transmit waveforms into ultrasound waveforms. The transducer assembly can also transmit and receive ultrasound waveforms into and out of the chamber, as well as transform at least two received ultrasound waveforms into received electrical waveforms. The device also includes a data processor that can receive the received electrical waveforms; estimate a difference in the received electrical waveforms that results at least partially from movement of the sample; and estimate a mechanical property of the sample by comparing at least one feature of the estimated difference to at least one predicted feature, wherein the at least one predicted feature is based on a model of an effect of the chamber wall. Finally, the device can also include a controller configured to control the timing of the ultrasound transmitter and data processor.

主权项

1. A device for estimating a mechanical property of a sample, comprising:
a chamber configured to hold the sample; a transmitter configured to transmit a plurality of waveforms, including at least one forcing waveform; a transducer assembly operatively connected to the transmitter and configured to transform the transmit waveforms into ultrasound waveforms, the transducer assembly further configured to transmit and receive ultrasound waveforms into and out of the chamber, and the transducer assembly further configured to transform at least two received ultrasound waveforms into received electrical waveforms; a data processor configured to:
receive the received electrical waveforms;estimate a difference in the received electrical waveforms that results at least partially from movement of the sample; andestimate a mechanical property of the sample by comparing at least one feature of the estimated difference to at least one predicted feature, wherein the at least one predicted feature is based on a model of an effect of the chamber wall; and a controller configured to control the timing of the ultrasound transmitter and data processor.