SHEAR SPEED IMAGING USING COHERENCE
To increase a signal-to-noise ratio for displacements used to estimate a shear speed in a patient tissue (44), constructive interference from multiple shear waves is used. By transmitting acoustic radiation force impulses focused at different locations (32), resulting shear waves constructively inte...
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| Main Authors | , |
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| Format | Patent |
| Language | English Korean |
| Published |
01.08.2018
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| Abstract | To increase a signal-to-noise ratio for displacements used to estimate a shear speed in a patient tissue (44), constructive interference from multiple shear waves is used. By transmitting acoustic radiation force impulses focused at different locations (32), resulting shear waves constructively interfere within a region of interest. This constructive interference causes a greater amplitude of the displacement. The location of the greater interference which is easily detected (42) and a time difference between the transmitted acoustic radiation force impulses are used to estimate the shear wave speed for the tissue (44).
환자 조직에서의 전단 속력을 추정(44)하기 위해 사용되는 변위들에 대한 신호-대-잡음비를 증가시키기 위해, 다수의 전단파들로부터의 보강 간섭이 사용된다. 상이한 위치들에 초점이 맞춰진 음향 방사력 임펄스들을 송신(32)함으로써, 결과적 전단파들이 관심 구역 내에서 보강 간섭할 수 있다. 이 보강 간섭은 변위의 더 큰 진폭을 유발한다. 이러한 더욱 쉽게 검출(42)되는 더 큰 간섭의 위치, 및 송신되는 음향 방사력 임펄스들의 시간의 차이는, 조직에 대한 전단파 속력을 추정(44)하기 위해 사용된다. |
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| AbstractList | To increase a signal-to-noise ratio for displacements used to estimate a shear speed in a patient tissue (44), constructive interference from multiple shear waves is used. By transmitting acoustic radiation force impulses focused at different locations (32), resulting shear waves constructively interfere within a region of interest. This constructive interference causes a greater amplitude of the displacement. The location of the greater interference which is easily detected (42) and a time difference between the transmitted acoustic radiation force impulses are used to estimate the shear wave speed for the tissue (44).
환자 조직에서의 전단 속력을 추정(44)하기 위해 사용되는 변위들에 대한 신호-대-잡음비를 증가시키기 위해, 다수의 전단파들로부터의 보강 간섭이 사용된다. 상이한 위치들에 초점이 맞춰진 음향 방사력 임펄스들을 송신(32)함으로써, 결과적 전단파들이 관심 구역 내에서 보강 간섭할 수 있다. 이 보강 간섭은 변위의 더 큰 진폭을 유발한다. 이러한 더욱 쉽게 검출(42)되는 더 큰 간섭의 위치, 및 송신되는 음향 방사력 임펄스들의 시간의 차이는, 조직에 대한 전단파 속력을 추정(44)하기 위해 사용된다. |
| Author | LABYED YASSIN FAN LIEXIANG |
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| Snippet | To increase a signal-to-noise ratio for displacements used to estimate a shear speed in a patient tissue (44), constructive interference from multiple shear... |
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| Title | SHEAR SPEED IMAGING USING COHERENCE |
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