High-Speed Digital Imaging of Neoglottic Vibration After Total Laryngectomy

Abstract

Digital high-speed imaging appeared to be a useful tool in studying the irregular vibrations of the neoglottis. Evaluation by the structured evaluation form gives a good idea about the wide variability in anatomical and morphologic features of the neoglottis.

Comprehensive Rehabilitation after Total Laryngectomy Is More than Voice Alone

“…Due to the recent developments in high-speed digital imaging more insight is now gained into the actual anatomy and morphology of the pharyngoesophageal (PE) segment or neoglottis [28]. The mucosal vibrations during tracheoesophageal voicing appear to be visible in the majority of patients, and a wide variation in form and vibratory pattern has been observed.…”

Model-based quantification of pathological voice production

“…The high-speed imaging technique is also applicable to the observation of the vibrating PE segment during substitute voice production [8,83,84]. procedure, the tracheostoma is manually closed by the patient for substitute voice production.…”

“…Using these experimental data to support the clinical diagnosis of voice disorders, therapy selection or analysis of the phonation process requires an objective measurement and quantification of the recorded oscillation patterns [8,70,85]. In the following, the techniques for segmenting the contours of the glottis and the pseudoglottis as well as the description of the corresponding dynamics are described.…”

“…This is modeled by multiple coupled oscillating elements as used in the MMM circularly placed in a horizontal plane, hereafter referred to as the PE-MMM. [8,61,83]. For such vibration patterns, the movement of the masses can be regarded as nearly perpendicular to the anchor spring direction.…”

“…The quality of the substitute voice significantly depends on the vibratory characteristics of the PE segment [8,9]. For improving the voice rehabilitation the relationship between the PE dynamics and the resulting substitute voice quality is a matter of particular interest.…”