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激光投影成像在儿童嗓音测量中的应用。

Laser projection imaging for measurement of pediatric voice.

机构信息

Department of Rehabilitation Sciences, Division of Communication Sciences and Disorders, University of Kentucky, Lexington, Kentucky 40536-0200, USA.

出版信息

Laryngoscope. 2011 Nov;121(11):2411-7. doi: 10.1002/lary.22325. Epub 2011 Oct 12.

DOI:10.1002/lary.22325
PMID:21993904
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3320049/
Abstract

OBJECTIVES/HYPOTHESIS: The aim of the study was to present the development of a miniature laser projection endoscope and to quantify vocal fold length and vibratory amplitude of the pediatric glottis using high-speed digital imaging coupled with the laser endoscope.

STUDY DESIGN

For this prospective study, absolute measurement of entire vocal fold length, membranous length of the vocal fold, and vibratory amplitude during phonation were obtained in one child (9 years old), one adult male (36 years old), and one adult female (20 years old) with the use of high-speed digital imaging, coupled with a custom-developed laser projection endoscope.

METHODS

The laser projection system consists of a module slip-fit sleeve with two 3-mW 650-nm laser diodes in horizontal orientation separated by a distance of 5 mm. Calibration involved projecting the laser onto grid patterns at depths ranging from 6 to 10 cm and tilt angles of 15 to -5 degrees to obtain pixel-to-millimeter conversion templates. Measurements of vocal fold length and vibratory amplitude were extracted based on methods of image processing.

RESULTS

The system demonstrated a method for estimating vocal fold length and vibratory amplitude with a single laser point with high measurement precision. First measurements of vocal fold length (6.8 mm) and vibratory amplitude (0.25 mm) during phonation in a pediatric participant are reported.

CONCLUSIONS

The proposed laser projection system can be used to obtain absolute length and vibratory measurements of the pediatric glottis. The projection system can be used with stroboscopy or high-speed digital imaging systems with a 70-degree rigid endoscope.

摘要

目的/假设：本研究旨在介绍一种微型激光投影内窥镜的开发，并使用高速数字成像技术结合激光内窥镜定量测量儿童声带的长度和振动幅度。

研究设计

在这项前瞻性研究中，使用高速数字成像技术，结合定制的激光投影内窥镜，对一名 9 岁儿童、一名 36 岁男性和一名 20 岁女性的整个声带长度、声带膜部长度和声门振动幅度进行了绝对测量。

方法

激光投影系统由一个模块滑配合套管组成，套管内有两个水平方向的 3mW650nm 激光二极管，间隔 5mm。校准涉及将激光投射到从 6 厘米到 10 厘米深度和 15 度到-5 度倾斜角的网格图案上，以获得像素到毫米的转换模板。根据图像处理方法提取声带长度和振动幅度的测量值。

结果

该系统展示了一种使用单个激光点估计声带长度和振动幅度的方法，具有较高的测量精度。首次报告了在一名儿科参与者发声时的声带长度（6.8mm）和振动幅度（0.25mm）的测量值。

结论

所提出的激光投影系统可用于获取儿童声带的绝对长度和振动测量值。该投影系统可与频闪镜或带有 70 度刚性内窥镜的高速数字成像系统一起使用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3df8/3320049/ec771f7b80d1/nihms366336f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3df8/3320049/0a53bce60d86/nihms366336f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3df8/3320049/c78eaaf57522/nihms366336f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3df8/3320049/6b59b105e7a6/nihms366336f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3df8/3320049/db0711bcc5b4/nihms366336f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3df8/3320049/6198430adc09/nihms366336f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3df8/3320049/ec771f7b80d1/nihms366336f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3df8/3320049/0a53bce60d86/nihms366336f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3df8/3320049/c78eaaf57522/nihms366336f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3df8/3320049/6b59b105e7a6/nihms366336f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3df8/3320049/db0711bcc5b4/nihms366336f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3df8/3320049/6198430adc09/nihms366336f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3df8/3320049/ec771f7b80d1/nihms366336f6.jpg

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