Both the Observer's Expertise and the Subject's Facial Symmetry Can Affect Anatomical Position of the Head

Sutton, Peter H.; Gateño, Jaime; English, Jeryl D.; Paranilam, Jaya; Teichgraeber, John F.; Xia, James J.

doi:10.1016/j.joms.2018.09.037

Cited by 3 publications

(1 citation statement)

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“…These methods have limitations. For example, the facial hallmark point and external reference frame methods are subjective, under the natural head position 40 . The reference planes usually do not provide for anatomical variations and do not consider patients with cranial and maxillofacial deformities 41 .…”

Section: Discussionmentioning

confidence: 99%

Anterior cerebral falx plane in MR images to estimate the craniofacial midline

Pei,

Liao,

et al. 2023

Sci Rep

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Multiple methods have been proposed for evaluating the symmetry of facial contour by utilizing the median sagittal plane of the skull as a reference and measuring the maxillofacial region. To replace the manual mark point analysis method, we used the anterior cerebral falx plane in MRI images as an indicator of the craniofacial midline. The MRI examination data of 30 individuals were analyzed with a MeVisLab workstation. Two independent examiners performed 15 anthropometric measurements (4 angular, 11 linear) and compared the MRI-based anterior cerebral falx plane with the manual mark point analysis of the craniofacial midline estimation. All measurements were repeated after 3 weeks. Statistical analyses included the repeatability and reproducibility of the 2 methods based on intra-observer and inter-observer correlation coefficients (ICCs), respectively. Precision was estimated by intergroup comparison of the coefficient of variation. The anterior falx plane derived from the MRI data resulted in an intra-observer ICC of 0.869 ± 0.065 (range 0.733–0.936) and inter-observer ICC of 0.876 ± 0.0417 (0.798–0.932) for all measurements, showing significant correlations with the ICC values obtained by the mark point method (p < 0.05). The coefficient of variation showed that the precisions of the 2 methods were statistically comparable. We conclude that, for MRI-based craniofacial midline estimation, measurements made using the anterior cerebral falx plane are as precise, repeatable, and reproducible as those using the manual mark point analysis method. It has a high potential for application in radiation-free 3-dimensional craniofacial analysis.

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Section: Discussionmentioning

confidence: 99%