Ultrasound vibrometry
US7753847B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2006 |
| Grant date | Jul 13, 2010 |
| Priority date | — |
| Expiry date | Nov 23, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B8/485
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method for measuring a mechanical property of a subject includes using an ultrasonic transducer to apply ultrasonic vibration pulses to a vibration origin in the subject in an on-off time sequence in order to impart a harmonic motion at a prescribed frequency to the subject, and when the vibration pulses are off, using the same transducer to apply ultrasonic detection pulses to a motion detection point and to receive echo signals therefrom in order to sense the harmonic motion on the subject at the motion detection point. From the harmonic signal information, a harmonic signal is detected and a characteristic such as amplitude or phase of the detected harmonic signal is measured. The mechanical property is calculated using the measured characteristic using for example a wave speed dispersion method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.