Vertigo Diagnostics

Phill with a headband

Vertigo Diagnostics


We are working on a unique diagnostic aid in cooperation with doc. MUDr. Jaroslav Jeřábek, CSc. from Neuro-otologic center of the Charles University and Motol University Hospital. It’s a “headband” displaying the accuracy of Semont and Epley maneuver.


Benign paroxysmal positional vertigo is a neurological disorder that represent the single most often cause of a vertigo.

The headband communicates with the computer that displays up-to-date information on the maneuver being performed. A significant deviation form a reference trajectory is announced by a sound signal.

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About the Disorder

As doc. Jeřábek puts it:

„The difficulty is caused by an infliction of a semi circular canal of the inner ear. The disorder is caused by calcium crystals forming in other parts of the inner ear, entering the semi circular canal. The semi circular canal is normally a receptor of acceleration but now it becomes gravity receptor instead which causes confusing signals for the brain. The cure exists: a repositioning maneuver in the plane of the afflicted canal. The scope of this project is to detect and signal possible deviations from prescribed maneuver trajectory.“

Maneuvers

Semont and Epley maneuver is a series of special exercises that serve to diagnose the condition as well as to cure it. The correct performance of the maneuver is rather difficult and requires a lot of practice — it is also difficult to say, whether it was performed right.

The diagnosis and cure bear certain risk of failure that may be caused by a slight deviation from the trajectory of head movements or of its speed. Our aid however minimizes this risk.

Visualization

The main function of our solution is the visualization of differences between ideal and real head trajectory. In case the doctor deviates from the prescribed trajectory or movement speed, he receives a sound alert. The application also visualizes real time position of the head with sensory planes visualization, history of angles between sensory planes and gravity direction.

Study

The headband is used in a study conducted by doc. Jeřábek aimed at interpersonal differences in performing these maneuvers. Our contribution to this study is the creation of hardware, software and processing the data obtained during the course of the study.

 

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