Videosingostroboscopy

What is videolaryngostroboscopy?

Videolaryngostroboscopy is a form of endoscopic examination. In this method, as with other endoscopic examination techniques, a part of the body (here the larynx or throat) is made visible through an optical system. No special medication is required during the examination. Under clinical conditions, the procedure is performed with the mouth open and the tongue out, in order to get a better view of the larynx while sitting.

VideosHow is post-ostroboscopy performed?

During the examination, the root of the tongue, the spaces behind the tongue called vallecula, the vocal cords, the trachea and the entrance to the esophagus can be visualized. Imaging can be done with a 70 or 90 degree angle telescope. Today, with advancing technology, flexible thin endoscopes can also reach these areas through the nose for imaging. A small camera attached to the endoscope allows the images to be transferred to a monitor in a much larger and easier to view format. All images can then be transferred to a computer for further evaluation, recording and photography.

What is Stroboscopy? What is it used for?

Stroboscopy is a light source. The number of vibrations of the vocal cords per second is determined by means of a microphone placed lengthwise. The transmission from the light source is interrupted according to this number or frequency of vibrations. The stroboscopically transmitted light allows the image of the area under investigation to be displayed at a speed that the human eye can follow.

How do the vocal cords work?

Our vocal cords vibrate about 100-140 times per second in a normal man, about 200-240 times in a woman and about 300 times in a child. These numbers represent the values during normal speech for individuals without any speech training. The human eye is not fast enough to follow these vibrations. The image obtained with stroboscopy is similar to watching a friend's movements in a dark entertainment venue while dancing under white flashing lights. In other words, you perceive movement as a series of frozen frames. This light technology allows us to see the movements of the vocal cords in detail and thus enables accurate identification of the affected areas.

Can videolaryngostroboscopic images be recorded?

During videolaryngoscopy, the images can also be recorded as digital video recordings, from which photographs can be taken at the same time or later. This allows changes in the vocal cords or other structures of the larynx to be archived and used as a control at different times.