The application and accuracy of feature matching on automated cephalometric superimposition

BMC Medical Imaging

Table 3 Mean operative differences in T₂ landmark distance (mm) between operators. Paired t-test results for the accuracy between manual and automated superimposition, both compared with true values in mandibular superimposition

	N	Operative difference (Hand process) (mm)		N	Accuracy (Hand process) (mm)		Accuracy (Automated process) (mm)		P-value
	N	Mean	SD	N	Mean	SD	Mean	SD	P-value
B	84	0.75	0.53	28	0.41	0.25	0.47	0.26	0.254
Pg	84	0.75	0.48	28	0.41	0.22	0.49	0.23	0.059
Me	84	0.70	0.45	28	0.42	0.22	0.46	0.32	0.566
Go	84	1.38	1.21	28	0.74	0.49	0.72	0.39	0.836
Co	84	1.65	1.24	28	0.94	0.59	0.69	0.50	0.695
LIE	84	0.62	0.86	28	0.52	0.36	0.58	0.30	0.538
LIA	84	0.76	0.55	28	0.41	0.25	0.47	0.26	0.226
LM	84	1.00	0.77	28	0.52	0.33	0.58	0.29	0.401
LMA	84	0.87	0.63	28	0.46	0.28	0.52	0.28	0.288

ISSN: 1471-2342