High-resolution ultrasound displacement measurement apparatus and method
AssigneeRehabtek LLC
InventorsQiyu Peng, Li-Qun Zhang
Life of this patent
Estimating the term…
Abstract
An ultrasound method of measuring displacement with high resolution includes transmitting a pair of Golay's complementary sequences or other complementary sequences, receiving echoes from the object and performing pulse compression of the two sequences of echoes. The displacement of the object between the two transmissions is derived from the residual clutter signals around the mainlobe of the compressed pulse output. Furthermore, movement velocity, thickness, strain, elastic stiffness, and viscous damping of the object or regions of the object can be determined subsequently.
Claims47
A method of measuring displacement of a desired region of an object with ultrasound, comprising:
- transmitting two complementary sequences;
- receiving echoes of said complementary sequences;
- performing pulse compression of the two echoes;
- and
- deriving displacement of a scatterer between two transmissions from residual clutter signals around a mainlobe of the compressed pulse output.
A displacement measurement apparatus for measuring a displacement of a desired target in a selected object, said apparatus comprising:
- a wave transmitter configured to transmit energy towards said target;
- a receiver configured to receive signal reflected from said target;
- a processor, said processor being configured to provide two complementary sequences to said wave transmitter and said processor being configured to measure the displacement of the target from a residual clutter signal around a mainlobe of said reflected or scattered signal from said two complementary sequences.
Dependencies are inferred from the claim text.