These templates can be augmented as more data become available so that the landmark definition improves with time.
These two methods however depend on the accuracy of landmark definition and the precision of the 3D surface models.
Differences in the magnitude of the measurement error are caused by the precision of landmark definition and the amount of noise from adjacent structures.
Landmarks definition were: cervical, the skin over the cervical and trapezius muscles, between C2 and C4 level; cheekbone, the skin over periorbital area of zygomatic bone; temple, the skin over the pars orbitalis of frontal and sphenoid bones.
Table 2 Cephalometric landmarks [18] Landmark Abbreviation Definition Sella S Center of sella turcica Nasion N Anterior point on the frontonasal suture Condylion Co Point tangential to the most superior aspect of the condyle using a perpendicular to the ramal plane.
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A training module has been developed that can be viewed online to promote the standardization of the approach to scoring by the application of explicit rules based on anatomical landmarks and standardized definitions relevant to inflammation [ 38].
In August 1991, the American College of Chest Physicians and the Society of Critical Care Medicine released a landmark Consensus Conference agreeing on definitions to be applied to patients with severe infections [ 1].
A landmark volume almost by definition, Safranski's work, which devotes a great deal of attention to Nietzsche's passion for music, is initially striking less for what the author has to say than for what he has chosen to leave out.
As a consequence, the CAC avoids the definition of landmark points for shape description purposes.
