Videostroboscopy
The Kansas Voice Center is equipped with a videostrobocopy unit that enables specialized personnel to fully evaluate the anatomy and physiology of the vocal folds. Videostroboscopy utilizes a strobe light that allows for a magnified and “slow motion” view of the vocal folds. This allows us to identify subtle abnormalities that are not visible to the naked eye. Observations can also be made with respect to vocal fold shape, stiffness, movement, vibration patterns, and timing of opening/closing. The procedure is painless and involves looking through the nose and/or the mouth. Stroboscopy is essential for any center evaluating vocal disorders.
Acoustic Voice Measures
We regularly record and analyze vocal quality. This may include such measures a fundamental frequency, vocal range, maximum phonation times, etc. Such measures are often repeated during the course of treatment to monitor progress.
Spirometer
Testing of lung function is available using a spirometer. This is a device into which one blows to help evaluate lung capacity and function (the power source for the voice).
pH Probe Testing for Reflux
For patients suspected of having acid reflux, a 24-hour pH probe can be performed. Though the majority of people with reflux do not require this type of testing, it is available in cases of difficult diagnosis or treatment failures. It involves placement of a small plastic tube in the nose and into the esophagus. One goes home for one day with this probe and can speak and eat normally. The probe records acid levels in different locations within the esophagus.
Electromyography
Laryngeal electromyography is also available. This test is done in conjunction with a neurologist and tests the neuromuscular status of the larynx.