. Author manuscript; available in PMC: 2013 Jul 21.

Published in final edited form as: Phys Med Biol. 2012 Jul 2;57(14):4683–4704. doi: 10.1088/0031-9155/57/14/4683

Table 5.

Impact of the technical improvements on syndesmophyte volume and height differences for the phantom.

		n	Mean +/- Std		CV
		n	mm³	%	%
VOLUMES	Initial algorithm	54	12.5 +/- 8.73	2.08 +/- 1.45	1.79
	With subvoxel cutting only	54	6.25 +/- 4.61	1.15 +/- 0.85	1.01
	With density and Laplacian only	54	12.5 +/- 7.10	2.34 +/- 1.31	1.90
	With density and Laplacian and blur equalization only	54	12.3 +/- 6.98	2.29 +/- 1.28	1.86
	Final algorithm	54	5.19 +/- 3.72	1.07 +/- 0.77	0.932
			mm	%	%
HEIGHTS	Initial algorithm	54	0.18 +/- 0.12	1.21 +/- 0.81	1.03
	With subvoxel cutting only	54	0.17 +/- 0.12	1.12 +/- 0.80	0.972
	With density and Laplacian only	54	0.19 +/- 0.14	1.28 +/- 0.97	1.14
	With density and Laplacian and blur equalization only	54	0.19 +/- 0.15	1.26 +/- 0.98	1.13
	Final algorithm	54	0.18 +/- 0.14	1.18 +/- 0.88	1.04