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王谦, 李梦, 柳学明等. 三维超声成像技术测量青少年特发性脊柱侧凸患者顶椎旋转角度的信度与效度分析[J]. 四川大学学报(医学版), 2018, 49(3): 436-441.
引用本文: 王谦, 李梦, 柳学明等. 三维超声成像技术测量青少年特发性脊柱侧凸患者顶椎旋转角度的信度与效度分析[J]. 四川大学学报(医学版), 2018, 49(3): 436-441.
WANG Qian, LI Meng, LOU H. M. Edmond. et al. Three-dimensional Ultrasound Assessment on Apical Vertebral Rotation in Patients with Adolescent Idiopathic Scoliosis:Reliability and Validity Analyses[J]. Journal of Sichuan University (Medical Sciences), 2018, 49(3): 436-441.
Citation: WANG Qian, LI Meng, LOU H. M. Edmond. et al. Three-dimensional Ultrasound Assessment on Apical Vertebral Rotation in Patients with Adolescent Idiopathic Scoliosis:Reliability and Validity Analyses[J]. Journal of Sichuan University (Medical Sciences), 2018, 49(3): 436-441.

三维超声成像技术测量青少年特发性脊柱侧凸患者顶椎旋转角度的信度与效度分析

Three-dimensional Ultrasound Assessment on Apical Vertebral Rotation in Patients with Adolescent Idiopathic Scoliosis:Reliability and Validity Analyses

  • 摘要: 目的 评价三维超声成像技术测量青少年特发性脊柱侧凸 (adolescent idiopathic scoliosis, AIS) 患者椎骨在水平面上旋转角度的信度与效度。方法 16例AIS女性患者纳入研究。由2位测评者进行三维超声扫描3次。所有三维超声图像随机分配,盲法测量3次,测量间隔1周。三维超声成像通过计算椎骨两侧的椎板中心连线与水平参考线之间的夹角,测量顶椎旋转角度;同时采用核磁共振成像 (magnetic resonance imaging, MRI) Aaro-Dahlborn方法测量AIS患者顶椎旋转角度作为对照。采用组内相关系数 (ICC [2, k])、平均测量差值和标准误评价三维超声测量结果的信度;通过与MRI测量结果比较,采用配对t检验、Bland-Altman方法及Pearson相关系数进行其效度评价。结果 三维超声成像技术测量AIS顶椎旋转角度的评测者内与评测者间ICC[2, k]>0.9,平均测量差值小于3.0°。三维超声和MRI测量结果之间差异无统计学意义(P>0.05);且两种方法之间具有较高的一致性和相关性 (r>0.9)。 结论 三维超声成像技术作为一种无辐射的影像学方法,可用于AIS顶椎在水平面上旋转角度的评估。

     

    Abstract: Objective To assess reliability and validity of the three-dimensional (3-D) ultrasound measurement of apical vertebral rotation in patients with adolescent idiopathic scoliosis (AIS). Methods Sixteen female AIS patients were recruited. Ultrasound examinations were performed using a 3-D ultrasound unit with a SonixGPS system, which were compared with magnetic resonance imaging (MRI) examinations conducted on the same day. Two raters performed 3-D ultrasound scanning in supine position on angle measurements for vertebral rotation in the transverse plane three times, respectively. The center of laminae (COL) method was used to measure apical vertebral rotation in the 3-D ultrasound image, compared with the Aaro-Dahlborn results of MRI. Reliability of the 3-D ultrasound measurements was assessed using intra-class correlation coefficients (ICC), mean absolute deviation (MAD), standard deviation (SD) and standard error of measurement (SEM). Validity of the 3-D ultrasound measurements was assessed using paired Student t-tests, Bland-Altman statistics and Pearson correlation coefficients. The level of significance was set as 0.05. Results 3-D ultrasound had high intra- and inter-rater reliabilities (ICC [2, k]>0.9, P<0.05) for assessing vertebral rotation. There was no significant difference between the Aaro-Dahlborn results in MRI and the COL results in 3-D ultrasound (P>0.05). High consistencies (Bland-Altman) and correlations (Pearson) were demonstrated between the two methods. Conclusion Radiation-free 3-D ultrasound is a reliable and valid method for measuring apical vertebral rotation in the transverse plane of patients with AIS.

     

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