It's like an acoustic pulse traveling through the earth.

这就像穿过地球的声波脉冲。

Also shockwave lithotripsy might be used, which is a noninvasive treatment that uses high-intensity acoustic pulses that travel through the body to break up the kidney stones.

冲击波碎石也是一种无创疗法，它利用高强度的声波脉冲经体表分解肾结石。