使用声波成像于医学诊断增长很快,但受到只靠二维成像的限制。近来在三个不同的单位中的研究有期望消除这个限制。 超声成功的原因是波的非电离性及各种软组织的力学性质之间的本质不同。现代超声成像仪器主要使用频率范围为1—10MHz的脉冲回声方式来产生人体内部结构的横断面图像。现代诊断一般根据人体结构的大小、位置、轮廓和运动,以及他们的相对传输和内反射性 The use of sonic imaging in medical diagnosis is growing rapidly, but limited only by two-dimensional imaging. Recent research in three different units has the expectation of eliminating this restriction. The reason for the success of ultrasound is the nature of the non-ionizing waves and the mechanical properties of various soft tissues. Modern ultrasound imaging instruments mainly use the pulse echo mode with the frequency range of 1-10 MHz to generate the cross-sectional image of the internal structure of the human body. Modern diagnostics are generally based on the size, position, contour and movement of the human anatomy, as well as their relative transmission and internal reflectivity