基于剪切波超声弹性成像评价正常成人腹横肌杨氏模量值

Application of shear-wave ultrasound elastography for transversus abdominis in normal adults

目的利用剪切波超声弹性成像技术评价正常成人腹横肌杨氏模量值,观察腹横肌收缩功能,为评价非特异性下腰痛患者腹横肌状态提供参照依据。方法选取60例健康受试者,测量腹横肌杨氏模量值和厚度,按静息状态和激活状态,分别记录数据并进行统计学分析,比较腹横肌杨氏模量值测量的可重复性,不同功能状态下杨氏模量值的差异以及不同变量间的相关性。结果腹横肌杨氏模量值测量可信度较好(ICC=0.588~0.789)。不同功能状态下腹横肌杨氏模量值差异有统计学意义(P<0.05)。腹横肌杨氏模量值与厚度之间无相关关系(r=0.075/-0.051,P>0.05)。腹横肌杨氏模量值(静息状态):8.27~9.08 kPa;腹横肌杨氏模量值(激活状态):17.49~19.15 kPa;腹横肌厚度(静息状态):0.29~0.32 cm;腹横肌厚度(激活状态):0.45~0.49 cm。结论剪切波弹性成像技术测量腹横肌硬度可信度较好,不同功能状态下差异明显,可作为腹横肌功能状态评估相对独立的新方法。

Objective To provide a new method for the functional evaluation of transverse abdominis and a reference in patients with non-specific low back pain,Young's moduls of transverse abdominis was measured by shear-wave ultrasound elastography in normal adults.Methods Sixty healthy subjects were enrolled to measure Young's modulus and thickness of transversus abdominis.To study the repeatability among operators,the difference of Young's modulus in different functional states and the correlation between variables,the data were recorded and statistically analyzed according to the resting state and contracted state.Results Young's modulus of transverse abdominis between operators had good reliability(ICC=0.588-0.789).Young's modulus of transverse abdominis was significantly different in different functional states(P<0.05).There was no correlation between Young's modulus and thickness of transverse abdominis(r=0.075/-0.051,P>0.05).Young's modulus of transverse abdominal muscle(resting state):8.27-9.08 kPa;transverse abdominal muscle(contracted state):17.49-19.15 kPa;thickness of transverse abdominis(resting state):0.29-0.32 cm;thickness of transverse abdominis(contracted state):0.45-0.49 cm.Conclusion Shear-wave ultrasound elastography has good reliability in measuring the stiffness of transverse abdominis.The difference of Young's modulus is obvious in different functional states.It provides a relatively independent new method for evaluating the functional states of transverse abdominis.