The results showed that all LHSV-based measures from the images of the posterior-middle view were similar to those of the complete view.
![fastcam mc1 fastcam mc1](https://clpmag.com/wp-content/uploads/2007/11/2007-11_12-01.jpg)
The LHSV-based measures from the images of the partial views were then compared to those with the complete view. The same images were used to simulate the images of partial views of the glottis by changing the outline of the region of interest to include only either the posterior-middle, anterior-middle, or middle parts of the glottis.
![fastcam mc1 fastcam mc1](https://d3i71xaburhd42.cloudfront.net/337a3496827cd1ad2d4a7e824f3319cc21599fa9/76-Table4-2-1.png)
The images of the complete view of the glottis were analyzed to obtain the LHSV-based measures. The procedures involved LHSV recording of the vibration of the vocal folds. The participants consisted of 9 young normophonic females. This study aims to examine the effects of using images of a partial view of the glottis (ie, posterior-middle, anterior-middle, or middle) on the LHSV-based measures (ie, fundamental frequency (F0 GAW), frequency perturbation (jitter GAW), amplitude perturbation (shimmer GAW), open quotient (OQ GAW), and Nyquist plot).
![fastcam mc1 fastcam mc1](https://0.academia-photos.com/attachment_thumbnails/45693703/mini_magick20190211-30913-alj7mb.png)
Often, the only available images that a clinician has to work with consist of a partial view of the glottis. However, in practice, the preferred images may not be obtained at all times. Ideally, an analysis method for laryngeal high-speed videoendoscopy (LHSV) based on the glottal area waveforms (GAW) requires images of a complete view of the glottis to ensure findings that are representatives of the vibratory behaviors of the whole vocal folds.