Cho John Chin Suk, Haun Daniel W, Kettner Norman W, Scali Frank, Clark Thomas B
Department of Radiology, Logan College of Chiropractic, 1851 Schoettler Road, Box 1065, Chesterfield, MO 63006-1065, USA.
J Clin Ultrasound. 2010 Jul;38(6):299-304. doi: 10.1002/jcu.20693.
To use sonography to measure the cross-sectional area (CSA) of the greater occipital nerve (GON) and the adjacent obliquus capitis inferior muscle (OCI) in normal subjects.
Data from 30 asymptomatic subjects between the ages of 22 and 35 were collected. CSA and circumference of the GON and CSA of OCI were measured using sonography. Interexaminer reliability analysis was performed using the intraclass correlation coefficient.
The CSA of the GON and OCI were 2 mm2 +/- 1 mm2 and 1.86 cm2 +/- 0.51 cm2, respectively. The average circumference of the GON was 4.8 mm +/- 1.3 mm. The interexaminer reliability of the measurements was excellent with intraclass correlation coefficient coefficients of 0.91, 0.84, and 0.73 for the GON CSA, GON circumference, and OCI CSA, respectively.
We report the normal values of the CSA of the GON and OCI. Knowledge of these normal values may facilitate the diagnosis of GON entrapment and provide outcome measures in therapeutic interventions.
使用超声测量正常受试者枕大神经（GON）的横截面积（CSA）以及相邻的头下斜肌（OCI）。
收集了30名年龄在22至35岁之间的无症状受试者的数据。使用超声测量GON的CSA和周长以及OCI的CSA。使用组内相关系数进行检查者间可靠性分析。
GON和OCI的CSA分别为2平方毫米±1平方毫米和1.86平方厘米±0.51平方厘米。GON的平均周长为4.8毫米±1.3毫米。测量的检查者间可靠性极佳，GON CSA、GON周长和OCI CSA的组内相关系数分别为0.91、0.84和0.73。
我们报告了GON和OCI的CSA正常值。了解这些正常值可能有助于诊断GON卡压，并为治疗干预提供结果指标。
