The vestibular system is vital part of a person’s ability to balance. Almost 69 million Americans have experienced vestibular dysfunction. An additional 8 million American adults report a chronic problem with balance, while 2.5 million report a chronic problem with dizziness. Diagnosing vestibular dysfunction requires a series of expensive and invasive tests, such as vestibular evoked myogenic testing. These tests are often inaccurate and can cause patient discomfort.

The ultrasound driven vestibular-evoked myogenic diagnostic test uses focused ultrasound and infrared pulses to stimulate vestibular organs. These thermal pulses activate vestibular-evoked myogenic potentials in the neck and ocular muscles. The myogenic potentials are averaged over time to generate a waveform that represents vestibular organ function. The magnitude and latency of the stimulus-response is then used to diagnosis vestibular otolith function.