Depth-kymography is the 3D display of the human vocal fold vibrations by measuring their vertical and horizontal movements simultaneously, using a specially designed 3D endoscope.
This 3D imaging method and the scientific term "Depth-Kymography" were introduced by Dr. Nibu A George, Prof. Frits de Mul and Prof.
The imaging of vocal fold vibrations is achieved by inserting an endoscope through the mouth.
With a specially designed 3D laryngoscope, movement of the vocal folds in the horizontal and the vertical directions can be simultaneously measured and displayed with horizontal and vertical displacements, forming the two orthogonal planes with time as the third dimension.
Depth-kymography has great potential in the investigation of voice disorders and in phonosurgical applications.