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Flexible videoscope exam
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this is my newest scope and takes incredible photos - details on the endosocpes |
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A normal larynx in a 25 year old, female singer during abduction (breathing in). See the video of her singing.
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A normal larynx in a 25 year old, male singer during adduction (phonating). This photo was taken during stroboscopy at a low pitch - the vocal cords are shortened - and during the open phase of a stroboscopic exam. See the video of him singing.
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A normal larynx in the same 25 year old, male singer during abduction (breathing in). In this overview the epiglottis is seen and they come in many shapes. This configuration is often called omega shaped.
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A nearly normal larynx in a 60 year old, male singer during abduction (breathing in).
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| Rigid scope exam |
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During a rigid scope exam, this is the position of the vocal folds at the onset of phonation at a high pitch.
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One may compare this person at a high and a low pitch, demonstrating the elongation of the vocal cords that takes place to raise pitch by contracting the Cricothyroid muscles.
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| Flexible fiberoptic scope exam |
I have essentially stopped using this scope as the newer chip on the tip scope above has such better picture quality. So, from my perspective these photos are of historical interest, though many people still use these endoscopes. You may easily compare the detail that is seen with the above photos.
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ABducted vocal folds. This view is from above with a flexible laryngoscope and is an overview of the voice box. The vocal folds are in this position when breathing in, particularly during a deep breath in or sniffing. This is about as wide as they will open.
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ADducted vocal folds. This is an overview during phonation. The vocal cords have come together and vibrate as air is forced between them making a sound. The surrounding pharynx and tongue then shape the sound.
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ABducted vocal folds. This is a close up of a deep breath in.
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Vocal folds during expiration. It is quite common for the vocal folds to partially close during expiration or when breathing out providing a little resistance to breathing out, much like a runner who purses their lips as they blow out, keeping a bit of air in the lungs to keep them inflated. It is not as closed as when making a sound.
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