Wu Zhi-Feng, Fan Qiong-Li, Ming Li, Yang Wang, Lv Kui-Lin, Chang Qin, Li Wen-Zao, Wang Cheng-Ju, Pan Qiu-Ming, He Li, Hu Bin, Zhang Yu-Ping
Department of Pediatrics, Second Affiliated Hospital of Army Medical University, Chongqing, China.
Transl Pediatr. 2021 Nov;10(11):2897-2906. doi: 10.21037/tp-21-186.
This study aimed to evaluate the correlation and consistency between traditional head measurement and structured light three-dimensional (3D) scanning parameters when measuring infant skull shape.
A total of 76 infants aged 3 months to 2.5 years old were included in the study. Head circumference (HC) was measured with a tape measure. The transverse, anteroposterior, and oblique diameters were measured using a spreading caliper, and the cranial vault asymmetry index (CVAI) and a cranial index (CI) of symmetry were calculated; 76 cases were measured successfully. The above indexes were measured using a structured light 3D scanning system (71 cases were measured with success). Thus, in the end, the valid data of 71 cases were analyzed, and the measurements of the two approaches were compared.
The 95% confidence interval of traditional head measurement and structured light 3D scanning was between 0.633 and 0.988. Pearson's correlation coefficient indicated a high correlation between the two methods (r=0.793-0.980). The correlation coefficients of the transverse diameter, anteroposterior diameter, and HC, and the CI of symmetry were higher than 0.9. The lowest correlation coefficient for the CVAI was 0.793. The P values of the above measurement data were all <0.001, which indicated that they were closely related. A Bland-Altman plot indicated reasonable consistency between the two methods.
Both traditional head measurement and structured light 3D scanning are suitable for the measurement of infant head shape. However, while traditional head measurement using a spreading caliper is economical and simple, making it suitable for general screening at a basic level, structured light 3D scanning can deliver additional parameters, which is useful for infants with an abnormal head shape. The latter is also convenient for designing a customized helmet for skull correction when needed.
本研究旨在评估测量婴儿颅骨形状时传统头部测量与结构光三维（3D）扫描参数之间的相关性和一致性。
本研究共纳入76例3个月至2.5岁的婴儿。用卷尺测量头围（HC）。使用扩张卡尺测量横径、前后径和斜径，并计算颅顶不对称指数（CVAI）和对称颅指数（CI）；成功测量76例。使用结构光3D扫描系统测量上述指标（成功测量71例）。最终，对71例的有效数据进行分析，并比较两种测量方法的结果。
传统头部测量与结构光3D扫描的95%置信区间在0.633至0.988之间。Pearson相关系数表明两种方法之间具有高度相关性（r=0.793-0.980）。横径、前后径与HC以及对称CI的相关系数均高于0.9。CVAI的最低相关系数为0.793。上述测量数据的P值均<0.001，表明它们密切相关。Bland-Altman图表明两种方法之间具有合理的一致性。
传统头部测量和结构光3D扫描均适用于婴儿头部形状的测量。然而，虽然使用扩张卡尺进行传统头部测量经济且简单，适用于基层的一般筛查，但结构光3D扫描可以提供额外参数，这对头部形状异常的婴儿很有用。后者在需要时也便于设计定制的颅骨矫正头盔。
