TY  - JOUR
A1  - Linz, Christian
A1  - Faber, Julian
A1  - Schmid, Reiner
A1  - Kunz, Felix
A1  - Böhm, Hartmut
A1  - Hartmann, Stefan
A1  - Schweitzer, Tilmann
T1  - Using a 3D asymmetry index as a novel form for capturing complex three-dimensionality in positional plagiocephaly
JF  - Scientific Reports
N2  - Positional plagiocephaly (PP) is the most common skull deformity in infants. Different classification systems exist for graduating the degree of PP, but all of these systems are based on two-dimensional (2D) parameters. This limitation leads to several problems stemming from the fact that 2D parameters are used to classify the three-dimensional (3D) shape of the head. We therefore evaluate existing measurement parameters and validate a newly developed 3D parameter for quantifying PP. Additionally, we present a new classification of PP based on a 3D parameter. 210 patients with PP and 50 patients without PP were included in this study. Existing parameters (2D and 3D) and newly developed volume parameters based on a 3D stereophotogrammetry scan were validated using ROC curves. Additionally, thresholds for the new 3D parameter of a 3D asymmetry index were assessed. The volume parameter 3D asymmetry index quantifies PP equally as well as the gold standard of 30° diagonal difference. Moreover, a 3D asymmetry index allows for a 3D-based classification of PP. The 3D asymmetry index can be used to define the degree of PP. It is easily applicable in stereophotogrammetric datasets and allows for comparability both intra- and inter-individually as well as for scientific analysis.
KW  - craniofacial orthodontics
KW  - physical examination
KW  - three-dimensional imaging
Y1  - 2022
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-300427
VL  - 12
ER  -