| 摘要 |
An ultrasound diagnostic device that transmits a push pulse into a subject and detects a shear wave propagating to adjacent tissue by repeating transmission of ultrasound to the subject and reception of reflected ultrasound from the subject, including a displacement detector that obtains reception signals in a time series by transmitting ultrasound to the subject and receiving reflected ultrasound from the subject, subsequent to transmission of the push pulse, and detects a displacement amount of the tissue inside the subject at each point in time at which the reception signals are respectively obtained; a wavefront extractor that extracts, based on the displacement amount of the tissue at each of the points in time, a wavefront of the shear wave at the corresponding point in time; and a wavefront image processor that generates a wavefront image that indicates a wavefront of the shear wave at each of the points in time. |
| 主权项 |
1. An ultrasound diagnostic device that transmits a push pulse, which is ultrasound that converges on a particular part inside a subject to apply physical pressure to tissue at the particular part, by using an ultrasound probe, and detects a process in which the tissue at the particular part acts as a vibration source due to the pressure and a shear wave propagates to adjacent tissue, by repeating transmission of ultrasound to the subject and reception of reflected ultrasound from the subject subsequent to transmission of the push pulse,
the ultrasound diagnostic device comprising an ultrasound signal processing circuit, wherein the ultrasound signal processing circuit includes: a displacement detector that obtains a plurality of reception signals in a time series by performing transmission of ultrasound to the subject and reception of reflected ultrasound from the subject, subsequent to transmission of the push pulse, and detects a displacement amount of the tissue inside the subject at each of a plurality of points in time at which the plurality of reception signals are respectively obtained; a wavefront extractor that extracts, based on the displacement amount of the tissue at each of the plurality of points in time at which the plurality of reception signals are respectively obtained, a wavefront of the shear wave at the corresponding point in time; and a wavefront image processor that generates a wavefront image that indicates a wavefront of the shear wave at each of the plurality of points in time at which the plurality of reception signals are respectively obtained. |
