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Midsagittal head and neck MRI with the six measurements used for measurement consistency comparison. A is Head Length (HL). B is Lower Anterior Face Height (LFH). C is Anterior Tongue Length (ATL). D is Hyoid vertical distance from PNS (HVP). E is Vocal Tract Length (VTL). F is Soft Palate (SP). See text for the definition of variables, and tissue type and measurement type of each variable.
