초고속 후두내시경 영상을 이용한 평면 스캔 비디오카이모그래피 영상 생성 Post-Processing of High-Speed Video-Laryngoscopic Images to Two-Dimensional Scanning Digital Kymographic Images원문보기
Background and Objectives : High-speed videolaryngoscopy (HSV) is the only technique that captures the true intra-cycle vibratory behavior of the vocal folds by capturing full images of the vocal folds. However, it has problems of no immediate feedback during examination, considerable waiting time f...
Background and Objectives : High-speed videolaryngoscopy (HSV) is the only technique that captures the true intra-cycle vibratory behavior of the vocal folds by capturing full images of the vocal folds. However, it has problems of no immediate feedback during examination, considerable waiting time for digital kymography (DKG), recording duration limited to a few seconds, and extreme demands for storage space. Herein, we demonstrate a new post-processing method that converts HSV images to two-dimensional digital kymography (2D-DKG) images, which adopts the algorithm of 2D videokymography (2D VKG). Materials and Methods : HSV system was used to capture images of vocal folds. HSV images were post-processed in Kay image-process software (KIPS), and conventional DKG images were retrieved. Custom-made post-processing system was used to convert HSV images to 2D-DKG images. The quantitative parameters of the post-processed 2D-DKG images was validated by comparing these parameters with those of the DKG images. Results : Serial HSV images for all phases of vocal fold vibratory movement are included. The images were converted by the scanning method using U-medical image-process software. Similar to conventional DKG, post-processed 2D DKG image from the HSV image can provide quantitative information on vocal fold mucosa vibration, including the various vibratory phases. Differences in amplitude symmetry index, phase symmetry index, open quotient, and close quotient between 2D-DKG and DKG were analyzed. There were no statistical differences between the quantitative parameters of vocal fold vibratory movement in 2D-DKG and DKG. Conclusion : The post-processing method of converting HSV images to 2D DKG images could provide clinical information and storage economy.
Background and Objectives : High-speed videolaryngoscopy (HSV) is the only technique that captures the true intra-cycle vibratory behavior of the vocal folds by capturing full images of the vocal folds. However, it has problems of no immediate feedback during examination, considerable waiting time for digital kymography (DKG), recording duration limited to a few seconds, and extreme demands for storage space. Herein, we demonstrate a new post-processing method that converts HSV images to two-dimensional digital kymography (2D-DKG) images, which adopts the algorithm of 2D videokymography (2D VKG). Materials and Methods : HSV system was used to capture images of vocal folds. HSV images were post-processed in Kay image-process software (KIPS), and conventional DKG images were retrieved. Custom-made post-processing system was used to convert HSV images to 2D-DKG images. The quantitative parameters of the post-processed 2D-DKG images was validated by comparing these parameters with those of the DKG images. Results : Serial HSV images for all phases of vocal fold vibratory movement are included. The images were converted by the scanning method using U-medical image-process software. Similar to conventional DKG, post-processed 2D DKG image from the HSV image can provide quantitative information on vocal fold mucosa vibration, including the various vibratory phases. Differences in amplitude symmetry index, phase symmetry index, open quotient, and close quotient between 2D-DKG and DKG were analyzed. There were no statistical differences between the quantitative parameters of vocal fold vibratory movement in 2D-DKG and DKG. Conclusion : The post-processing method of converting HSV images to 2D DKG images could provide clinical information and storage economy.
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제안 방법
He was a speech-language pathologist and could produce various registers. He phonated sustained /e/ vowels in a modal voice, which were recorded using an HSV imaging system.
The 2D DKG image type, which adopted the algorithm of 2D VKG, can provide clinically relevant information with low storage needs and might be suggested as the imaging protocol for the new post-processing method. In this study, we demonstrate a new post-processing method that can convert HSV images to 2D DKG images.
Images may also be uploaded to medical PACS without additional upgrades to either storage or the computer system. To validate whether post-processed 2D DKG could provide optimal information for vibratory movement from HSV images, its quantitative parameters were compared with those of conventional DKG. As there was no difference between the two image types, postprocessing to 2D DKG was considered to be a suitable conversion method.
대상 데이터
A healthy 34-year-old man with no history of laryngeal disorders or surgery participated in this study. He was a speech-language pathologist and could produce various registers.
데이터처리
A Student’s t-test was used to evaluate the differences between the two groups ; p values of ＜0.05 were considered significant.
이론/모형
The converted images can be exported as a video file (avi type). The conversion algorithm was adopted from the line scanning method of the 2D DKG system. In the selected glottal area, a horizontal line or lines of HSV images are serially reconstructed into the new 2D DKG images.
참고문헌 (20)
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