From: Influence of patient motion on definition of typical cephalometric reference points in digital horizontally scanning cephalometric radiography
Distance
Mean ±
SD [mm]
Min[mm]
Max [mm]
Maximum difference to reference [mm]
Motion for image with maximum deviation
S–N
64.4 ± 5.2
60.8
82.8
−18.8
dorsal shift 20 mm
N-Me
112.3 ± 0.3
111.7
112.7
0.7
permanent nodding 5 mm