Shear wave elasticity measurement method and shear wave elasticity imaging system
AssigneesShenzhen Mindray Bio-Medical Electronics Co., Ltd., Shenzhen Mindray Scientific Co., Ltd.
InventorShuangshuang Li
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Abstract
A shear wave elasticity measurement method and a shear wave elasticity imaging system are disclosed. For each pair of corresponding shear waves, an echo signal within a continuous period of time can be obtained only at a third position, so that an elasticity parameter corresponding to the target area can be obtained according to the echo signal within the continuous period of time. Not only the position required for obtaining an echo signal is few, but also the total data volume required for obtaining the echo signal is few. The calculation method is also easy, which significantly reduces the system performance requirement.
Claims18
A shear wave elasticity measurement method, comprising:
- generating a first shear wave at a first position on a boundary of a target area;
- generating a second shear wave at a second position on the boundary of the target area, wherein the second position is located on a propagation path of the first shear wave;
- transmitting an ultrasound wave to a third position to detect the first shear wave and the second shear wave, and receiving echoes of the ultrasound wave to obtain an echo signal, wherein the third position is located outside the target area and the first shear wave propagates to the third position through the second position;
- obtaining a first time when the first shear wave reaches the third position and a second time when the second shear wave reaches the third position according to the echo signal;
- and
- calculating an elasticity parameter of the target area according to a time difference between the first time when the first shear wave reaches the third position and the second time when the second shear wave reaches the third position, and a distance between the first position and the second position.
A shear wave elasticity imaging system, comprising:
- a probe;
- a transmitting controller configured to control the probe to generate a first shear wave at a first position on a boundary of a target area, control the probe to generate a second shear wave at a second position on the boundary of the target area, and control the probe to transmit an ultrasound wave to a third position to detect the first shear wave and the second shear wave, wherein, the second position is located on a propagation path of the first shear wave, and the third position is located outside the target area and the first shear wave propagates to the third position through the second position;
- a receiving controller configured to control the probe to receive echoes of the ultrasound wave transmitted to the third position to obtain an echo signal;
- and
- an image processor configured to obtain a first time when the first shear wave reaches the third position and a second time when the second shear wave reaches the third position according to the echo signal, and calculate an elasticity parameter of the target area according to a time difference between the first time when the first shear wave reaches the third position and the second time when the second shear wave reaches the third position, and a distance between the first position and the second position.
Dependencies are inferred from the claim text.