In the above article [1] , we mentioned that the superposition of the different symmetric (S) modes in the frequencywavenumber (f-k) domain results in a high-intensity region where its slope corresponds to the longitudinal wave speed in the slab. However, we have recently understood that this highintensity region belongs to the propagation of a wave called lateral wave or head wave [2] – [5] . It is generated if the longitudinal sound speed of the aberrator (i.e., the PVC slab) is larger than that of water and if the incident wavefront is curved. When the incidence angle at the interface between water and PVC is near the critical angle, the refracted wave in PVC reradiates a small part of its energy into the fluid (i.e., the head wave). As discussed in [4] , if the thickness of the waveguide is larger than the wavelength, the first arriving signal is the head wave. This is also the case in our study [1] where the ultrasound wavelength of a compressional wave in PVC was close to 1 mm, and a PVC slab with a thickness of 8 mm was used.

中文翻译：

---

“用于医学超声成像中像差校正的兰姆波和自适应波束形成”勘误表


在上面的文章中[1] ，我们提到频率波数 (fk) 域中不同对称 (S) 模式的叠加会产生高强度区域，其斜率对应于板中的纵波速度。然而，我们最近了解到，这个高强度区域属于一种称为横波或头波的波的传播[2] – [5] .如果畸变器（即 PVC 板）的纵向声速大于水的纵向声速并且入射波前是弯曲的，就会产生这种情况。当水和PVC界面处的入射角接近临界角时，PVC中的折射波将其一小部分能量重新辐射到流体中（即头波）。正如[4]中所讨论的，如果波导的厚度大于波长，则第一个到达的信号是头波。我们的研究[1]也是如此，PVC中压缩波的超声波波长接近1毫米，并且使用了厚度为8毫米的PVC板。