现代回波图像设备的主要要求之一是,在实时工作情况下,整个成像场内均能够获得高分辨率图像。为达到此要求,需要采用动态聚焦阵列探头和宽频带电子系统。通过延迟每个阵列元件中的发射和接收信号。即可实现动态超声束聚焦和偏转。用昔通的模拟电子技术来实现这一点是困难的。因而在最近几年中,数字处理装置已经转向波阵面相探阵设备。 One of the major requirements of modern echo imaging equipment is that high resolution images are available throughout the imaging field in real-time operation. To meet this requirement, dynamic focus array probes and broadband electronic systems are required. By delaying the transmit and receive signals in each array element. You can achieve dynamic beam focus and deflection. It is difficult to achieve this with conventional analog electronics. In recent years, therefore, digital processing devices have turned to wavefront facsimile devices.