Sella-nasion plane to nasion-B point line:Angle:Pt:Skull:Qn:XR.measured
sella-nasion plane to nasion-b point line:angle:pt:skull:qn:xr.measured
Sella-nasion plane to nasion-B point line:Angle:To identify measures at a point in time:Skull:Quantitative:XR.measured
sella-nasion plane to nasion-b point line:angle:to identify measures at a point in time:skull:quantitative:xr.measured