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目的:设计一种新型的自然头位正面照片拍摄方法,并对其所拍摄的照片进行初步时间可重复性验证。方法:设计一种基于装有单向透视玻璃的自制相机暗盒,并以此为基础建立记录自然头位正面照片的拍摄方法。利用该方法对42名受试者,分别于baseline,1 h,1 d,3 d,7 d进行拍摄,以照片中两外眦连线与水平线的夹角为检测指标,进行时间可重复性检验。结果:单因素方差(One-way ANOVA)分析和Bonferroni多重检验分析表明不同时间点拍摄的正面照片中外眦连线与水平线夹角间差异无统计学意义(P one-way ANOVA=0.9558,各组间P Bonferroni’s检验>0.05)。结论:建立了一种简单易行的自然头位正面照片拍摄方法,运用此方法拍摄得到的自然头位正面照片经过初步验证具有良好的时间可重复性。
OBJECTIVE: To design a new type of natural head-position photographing method and to verify the initial time repeatability of the photographs taken by it. Method: A self-made camera cassette based on a one-way see-through glass is designed and used as a basis for recording a photograph of a frontal photograph of a natural head. Using this method, 42 subjects were taken at the baseline, 1 h, 1 d, 3 d, and 7 d respectively. Taking the included angle between the connecting line and the horizontal line in the photo as the detection index, the time repeatability test. Results: One-way ANOVA and Bonferroni multiple test analysis showed that there was no significant difference in the angle between the hystrix and the horizontal line in the frontal photographs taken at different time points (P one-way ANOVA = 0.9558, each group Inter P Bonferroni’s test> 0.05). CONCLUSION: A simple and straightforward natural head-position photographing method is established. The frontal photographs of the natural head obtained by this method have been verified to have good temporal repeatability.