一种聚焦超声位移成像方法及装置制造方法及图纸

一种聚焦超声位移成像方法及装置，其中，该方法包括：在分段读出平面回波序列的180°回聚脉冲前后各添加一个位移编码梯度，根据位移编码梯度确定聚焦超声的脉冲起止时间点(S102)；控制聚焦超声按照脉冲起止时间点工作，采集得到两组相位图(S104)；根据两组相位图的相位差和位移定量公式生成位移分布场图；其中，位移分布场图中位移最大值为焦点位置(S106)；对位移分布场图进行三维成像(S108)。该方法基于分段读出平面回波实现磁共振声辐射力位移成像，具有较高的图像信噪比，扫描速度快，图像畸变小。有效提高检测时间和分辨率，减少磁化率伪影及图像畸变，实现高强度聚焦超声焦点精准定位。

Method and device for focusing ultrasonic displacement imaging

And a device, a focused ultrasound imaging method in which the method of displacement, including: the readout segmented echo planar sequence of 180 DEG refocusing pulse before and after each add a displacement encoding gradient, determine pulse focused ultrasound check time point according to the displacement gradient encoding (S102) control; focused ultrasound pulses according to the time point two, the collected group phase diagram (S104); the two groups according to the phase difference and phase diagram of displacement quantitative formula to produce displacement distribution map; the displacement distribution diagram of the maximum displacement for the focus position (S106); 3D imaging of the distribution of displacement field map (S108). The method realizes the magnetic resonance acoustic radiation force displacement imaging based on sectional readout plane echo, which has higher image signal-to-noise ratio, faster scanning speed and less image distortion. It can effectively improve the detection time and resolution, reduce the magnetic susceptibility artifact and image distortion, and achieve the accurate positioning of the focus of high-intensity focused ultrasound.

【技术实现步骤摘要】
【国外来华专利技术】PCT国内申请，说明书已公开。

【技术保护点】
PCT国内申请，权利要求书已公开。

【技术特征摘要】
【国外来华专利技术】PCT国内申请，...

【专利技术属性】
技术研发人员：郑海荣，刘新，乔阳紫，邹超，孟德，帖长军，
申请(专利权)人：深圳先进技术研究院，
类型：发明
国别省市：广东,44