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Table 1 Definition of the anatomical landmarks used in the registration of the pre- and post-treatment images

From: Three-dimensional oropharyngeal airway changes after facemask therapy using low-dose computed tomography: a clinical trial with a retrospectively collected control group

landmark Abbreviation Axial Frontal Sagittal
Tip of the nasal bone NSTP Mid-inferior radiopaque point of the Inter-nasal suture Mid-inferior point of the Inter-nasal suture Anteroinferior point on the nasal bone in the mid sagittal plane
Tip of Clivus CLVS Mid-posterior point of the clivus Mid-inferior point of the clivus posterinferior point of the clivus in the mid sagittal plane
Right foramen ovale ROVAL Mid-point of the inferior complete circle representing the foramen Mid-point of radiolucent space representing the foramen Mid-point of radiolucent space representing the forman
Left foramen ovale LOVAL Mid-point of the inferior complete circle representing the foramen Mid-point of radiolucent space representing the foramen Mid-point of radiolucent space representing the forman
Right foramen spinosum RSPNM Mid- point of the inferior complete circle representing the foramen Inferior mid-point of the opening to infratemporal fossa
Left foramen spinosum LSPNM Mid-point of the inferior complete
circle representing the foramen
Inferior mid-point of the opening to infratemporal fossa
  1. According to Alsufyani et al.[15]