Elasticity of human vocal folds measured in vivo using color Doppler imaging
Elasticity of human vocal folds measured in vivo using color Doppler imaging
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DOI：
10.1016/s0301-5629(02)00559-8
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发表时间：
2002-09-01
影响因子：
2.9
通讯作者：
Shau, YW
中科院分区：
文献类型：
--
作者：
Hsiao, TY;Wang, CL;Shau, YW
对正常发声时声带振动长度进行了无创测量，并计算了相应的弹性。建立了一个由振动电机驱动的固定端橡胶绳体模来模拟水平VF运动。彩色多普勒成像（CDI）的振动伪影用于表征和量化具有小振幅的高频组织振动。由于同时得到了振动频率和振动长度，因此可以计算振动频率下的应力-应变关系和杨氏模量。对6名正常成人志愿者（男3名，女3名，年龄19 ~ 51岁），男、女声带有效振动长度分别为1.4 ~ 1.6cm和1.3 ~ 1.5cm。在高一个倍频程上，VF的长度延伸到约1.7至1.8 cm的节距，并且应力-应变关系是非线性的。然而，在较低的音调范围内，VF应力相对于应变是相对线性的，并且杨氏模量在男性中为30至120 kPa，在女性中为120至300 kPa。(C)2002年世界医学超声生物学联合会。
Noninvasive measurement of human vocal fold (VF) vibratory length was made during normal phonation to calculate the corresponding elasticity. A fixed-ends rubber string phantom that was driven by a vibrating motor was built to simulate the horizontal VF movement. The vibratory artefact of color Doppler imaging (CDI) was used to characterize and quantify the high-frequency tissue vibration with small amplitude. Because the frequency and the length of vibrating VFs were obtained simultaneously, the stress-strain relation and the Young's moduli of the VFs could be calculated. For the six vocally normal adult volunteers (3 M, 3 F, ages from 19 to 51 years old), the effective vibrating lengths of the vocal fold in low pitch were about 1.4 to 1.6 cm and 1.3 to 1.5 cm for men and women, respectively. The VFs lengths extended to about 1.7 to 1.8 cm in pitch over an octave higher and the stress-strain relation was nonlinear. However, in the range of lower pitch, the VF stress was relatively linear with respect to the strains and the Young's moduli were about 30 to 120 kPa in men and 120 to 300 kPa in women. (C) 2002 World Federation for Ultrasound in Medicine Biology.