SymMetric

SymMetric quantifies craniofacial asymmetry from orthogonal anterior, superior, and lateral photographs to support diagnosis and monitoring of craniofacial deformities.

Key Features:

• Orthogonal Photography: Acquires anterior, superior, and lateral orthogonal photographs to capture comprehensive head and facial perspectives without ionizing radiation.
• Landmark-Based Analysis: Provides a Matlab-based workflow to guide selection of visible and reproducible landmarks on each photograph as reference points.
• Asymmetry Index Calculation: Calculates various indexes and metrics from selected landmarks to quantify craniofacial asymmetry.
• Data Visualization: Generates detailed plots summarizing head and facial symmetry across orthogonal views to highlight regional deformities and severity.
• Clinical Numerical Outputs: Produces multiple numeric evaluations to inform decisions on orthotic intervention, treatment duration, and assessment of surgical outcomes.
• Comparative Analysis: Distinguishes control subjects from patients with non-sinostotic craniofacial deformities, with particular sensitivity in superior-view metrics.
• Therapy Monitoring: Enables monitoring of clinical improvements during helmet therapy with documented follow-up assessments at three and five months after orthosis use.

Scientific Applications:

• Positional Plagiocephaly Diagnosis: Quantifies asymmetry to aid diagnosis of positional plagiocephaly using superior and complementary views.
• Orthotic Treatment Planning: Supports determination of need for orthotic intervention and planning of treatment duration for helmet therapy.
• Surgical Outcome Evaluation: Provides quantitative metrics to evaluate surgical corrections and postoperative symmetry.
• Clinical and Research Assessment: Serves as a radiation-free, quantitative proof-of-concept method for integration into clinical evaluations and research studies of craniofacial asymmetry.

Methodology:

Acquires anterior, superior, and lateral orthogonal photographs; uses Matlab-based software to guide selection of visible, reproducible landmarks; computes asymmetry indexes and metrics from landmarks; and generates plots and numeric evaluations for symmetry assessment.