Acoustic coupling - TUS

In order to ensure that ultrasound is transmitted from the transducer to the head with minimal attenuation, it is important to couple the transducer to the head using aqueous gel or other appropriate materials. The goal of this lecture is to introduce students to the physics of ultrasound wave propagation, with the aim of illustrating why coupling is crucial for TUS.

At the end of this lecture, students will be able to explain how reflection, refraction, scattering and absorption of ultrasound waves impacts transcranial ultrasound applications, and how attenuation can be mitigated by appropriate coupling.