实时剪切波弹性成像定量评价正常胸锁乳突肌弹性

Quantitative measurement of real-time shear wave elastography on normal sternocleidomastoid

摘要:

目的 分析应用实时剪切波弹性成像评价正常人颈部中立位与扭转时胸锁乳突肌的弹性模量值及其影响因素。方法 对200名健康志愿者在颈部中立位与扭转时测量胸锁乳突肌弹性模量值，分析其与性别、年龄、体质量指数的相关性。结果 在颈部中立位时，不同性别、年龄、体质量指数的人群的胸锁乳突肌弹性值差异均无统计学意义（P＞0.05）；在颈部扭转时，不同性别、年龄胸锁乳突肌弹性值差异均有统计学意义（P＜0.05），男性硬度高于女性，且年龄与硬度呈负相关（P＜0.05）[弹性模量的均值(mean)、最小值(min)、最大值(max)相关系数分别为-0.732、-0.643、-0.711]，体质量指数与硬度无明显相关性（P＞0.05）（弹性模量的mean、min、max相关系数分别为0.021、0.011、0.001）。结论 实时剪切波弹性成像技术可用于定量评价正常胸锁乳突肌硬度，为肌力异常疾病提供帮助。

Abstract:

Objective To explore the elastic modulus of normal sternocleidomastoid at the state of head neutral position and rotation by real-time shear wave elastography(SWE) and its influential factors. Methods Two hundred healthy subjects underwent SWE examinations and the elastic modulus values of sternocleidomastoid under different state were obtained and analyzed in relation to gender, age, body mass index(BMI) of the individuals. Results Under the condition of head neutral position, there were no significant differences among subject with different gender and age and BMI（P＞0.05）. Under the condition of head rotation, the elastic modulus value of males was higher than that of females（P＜0.05）. The elastic modulus value of males was negatively correlated with age（r= -0.732，-0.643，-0.711, P＜0.05）, was not significantly correlated with BMI（r=0.021，0.011，0.001, P＞0.05）. Conclusion Real-time shear wave elastography can be used to quantitatively evaluate the hardness of normal sternocleidomastoid, which provides the reference value for the disease diagnosis.