Liberton Denise K, Mishra Rashmi, Beach Margaret, Raznahan Armin, Gahl William A, Manoli Irini, Lee Janice S
National Institute of Dental and Craniofacial Research, National Institutes of Health.
Developmental Neurogenomics Unit, National Institute of Mental Health, National Institutes of Health.
J Craniofac Surg. 2019 Sep;30(6):1869-1872. doi: 10.1097/SCS.0000000000005795.
Numerous 3d imaging systems are now available commercially for the capture of facial shape data via landmarking or surface shape comparisons but it is not known whether these systems produce data of comparable quality. This study investigates the error associated with landmark coordinate data collected on facial surface images taken using three 3d imaging systems: the 3dMDface system (3dMD, Atlanta, GA), the Planmeca ProFace system (Planmeca, Roselle, IL), and the Vectra H1 handheld system (Canfield Scientific, Parsippany, NJ). This was a retrospective study involving 3d imaging data that used geometric morphometric analysis to assess overall shape differences as well as landmark-specific differences among the systems. Ten individuals evaluated at the NIDCR dental clinic on various protocols were imaged on all 3 systems. The subject pool consisted of syndromic and unaffected subjects, as disease status was irrelevant to the question of reproducibility and variability. Variation in landmark placement across systems was assessed by ANOVA, covariance matrix, and summary statistics. No overall shape or size differences were found among the systems. However, there was some landmark-specific variation and the 3dMD and Vectra systems were generally more similar to each other than either was to the Planmeca system. The data acquired by these 3 systems are comparable, although landmarks on the eyes and ears are noisy and most different among systems.
目前有许多三维成像系统可供商业使用，用于通过地标定位或表面形状比较来获取面部形状数据，但尚不清楚这些系统生成的数据质量是否相当。本研究调查了使用三种三维成像系统拍摄的面部表面图像上收集的地标坐标数据的误差：三维医学面部系统（3dMD，佐治亚州亚特兰大）、普兰梅卡ProFace系统（普兰梅卡，伊利诺伊州罗塞尔）和Vectra H1手持式系统（坎菲尔德科学公司，新泽西州帕西帕尼）。这是一项回顾性研究，涉及三维成像数据，该数据使用几何形态计量分析来评估系统之间的整体形状差异以及特定地标差异。在国立牙科和颅面研究所牙科诊所按照各种方案评估的10名个体在所有这三种系统上进行了成像。受试者群体包括患有综合征的和未受影响的受试者，因为疾病状态与再现性和变异性问题无关。通过方差分析、协方差矩阵和汇总统计来评估不同系统之间地标放置的变化。在这些系统之间未发现整体形状或大小差异。然而，存在一些特定地标变异，并且3dMD和Vectra系统通常彼此之间比它们与普兰梅卡系统更相似。尽管眼睛和耳朵上的地标存在噪声且在各系统之间差异最大，但这三种系统获取的数据具有可比性。
