Elastic imaging device and method

• Main Authors: SANDRIN, LAURENT, AUDIERE STEPHANE
• Format: Patent
• Language: Chinese; English
• Published: 13.01.2023
• Subjects: DIAGNOSIS; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; MEDICAL OR VETERINARY SCIENCE; SURGERY

An elastography apparatus comprises a probe having a single ultrasound transducer (6) or a plurality of ultrasound transducers, and a low frequency vibrator arranged to cause displacement of the single ultrasound transducer or the plurality of ultrasound transducers towards tissue (8). The apparatus is configured to transmit a train of ultrasound pulses and acquire echo signals received in response to track how elastic waves caused by displacement propagate in tissue. The device is configured to generate a transmit time offset ([delta] tTX) and/or a receive time offset ([delta] tRX) for the transmitted one or more transmitted pulses such that the difference thereof varies as a function of 2. D/vus, where d is the displacement of the single transducer or transducers and vus is the ultrasound velocity in the tissue. 一种弹性成像装置，包括具有单个超声换能器(6)或多个超声换能器的探头、以及被布置成引起所述单个超声换能器或多个超声换能器朝向组织(8)的位移的低频振动器。所述装置被配置成发射超声脉冲序列并获取响应接收的回波信号，以跟踪由位移引起的弹性波如何在组织中传播。所述装置被配置成针对发射的一个或多个发射的脉冲生成发射时间偏移量(δtTX)和/或接收时间偏移量(δtRX)，使得其差值作为2.d/vus的函