前臂内侧皮神经的超声表现及定量测量

Ultrasonic manifestations and quantitative measurement of medial antebrachial cutaneous nerve

目的:探讨正常成人前臂内侧皮神经(MACN)的超声表现及定量测量。方法:用高频超声(HRUS)观察35例正常成人MACN形态,测量其主干、前支、后支的截面积(CSA)、杨氏模量(E)和剪切波速度(SWV)。分析性别、左右侧、年龄、身高、体重及体质量指数(BMI)与所测指标的相关性。结果:主干显示率92.86%,前支、后支显示率100%。主干、前支、后支的CSA分别为(6.15±1.29)mm^(2)、(3.21±1.08)mm^(2)、(2.61±0.99)mm^(2);E值分别为(28.34±9.58)kPa、(27.43±11.21)kPa、(27.42±7.00)kPa;SWV分别为(2.97±0.53)m/s、(2.92±0.59)m/s、(2.89±0.41)m/s。年龄与主干、前支各指标正相关;BMI与右主干、前支CSA、左后支E值、SWV正相关。左后支E值及SWV明显高于右侧。性别、身高、体重与各测量结果无相关。结论:HRUS可清楚显示并定量测量MACN,评估其病生理改变。

Objective:To investigate the ultrasonic manifestations and quantitative measurement of medial antebrachial cutaneous nerve(MACN)in normal adults.Methods:High-frequency ultrasound(HRUS)was used to observe the morphology of MACN in 35 normal adults.The cross-sectional area(CSA),Young's modulus(E)and shear wave velocity(SWV)of the main,anterior and posterior branches were measured.The correlation between gender,left and right sides,age,height,weight,body mass index(BMI)and the measured indexes was analyzed.Results:The display rate of the main trunk was 92.86%,and the display rate of the anterior and posterior branches was 100%.The CSA of main trunk,anterior branch and posterior branch were(6.15±1.29)mm^(2),(3.21±1.08)mm^(2) and(2.61±0.99)mm^(2),respectively;the E values were(28.34±9.58)kPa,(27.43±11.21)kPa and(27.42±7.00)kPa,respectively;SWV was(2.97±0.53)m/s,(2.92±0.59)m/s and(2.89±0.41)m/s,respectively.The age was positively correlated with the indexes of main trunk and anterior branch;BMI was positively correlated with right main trunk,anterior branch CSA,left posterior branch E value and SWV;the E value and SWV of the left posterior branch were significantly higher than those of the right;gender,height and weight were not correlated with the measurement results.Conclusion:HRUS can clearly show and quantitatively measure MACN and evaluate its pathophysiological changes.