Krishnan Kajoli B, Thomenius Kai E
IEEE Trans Ultrason Ferroelectr Freq Control. 2008 Jan;55(1):249-53. doi: 10.1109/TUFFC.2008.634.
We have computed predistorted pulses that minimize tissue harmonics to < -25 dB compared to fundamental over a 4-cm depth in the focal region using a Hankel transform-based algorithm. The results indicate their potential in achieving patient independent improvement in contrast with microbubbles using wideband ultrasonic transducers at high mechanical indices.
我们使用基于汉克尔变换的算法，计算出了预失真脉冲，该脉冲可使焦区内4厘米深度范围内的组织谐波与基波相比最小化至低于-25 dB。结果表明，在高机械指数下使用宽带超声换能器时，这些预失真脉冲在与微泡造影剂配合实现不依赖于患者的对比度改善方面具有潜力。
