Accuracy of in vitro mandibular volumetric measurements from CBCT of different voxel sizes with different segmentation threshold settings

Table 2 Volumetric measurement of different CBCT voxel sizes with 5 minimum thresholds compared with laser scan

Voxel size (mm)	HU	Mean vol (mm ³ )	Deviation%	P
.125	0	24,436.83	1.91	.004*
	100	24,007.69	.12	.794
	200	23,690.75	−1.2	.018*
	300	23,350.4	−2.62	.000*
	400	23,014.19	−4.02	.000*
.20	0	24,695.64	2.99	.000*
	100	24,282.46	1.27	.020*
	200	23,959.73	−.07	.855
	300	23,601.82	−1.57	.009*
	400	23,246.79	−3.05	.000*
.30	0	25,494.24	6.32	.000*
	100	24,968.95	4.13	.000*
	200	24,506.46	2.2	.002*
	300	24,018.74	.17	.757
	400	23,604.68	−1.56	.018*
.40	0	25,817.22	7.67	.000*
	100	25,275.56	5.41	.000*
	200	24,771.32	3.31	.000*
	300	24,291.91	1.31	.044*
	400	23,898.76	−.33	.52
Laser		23,978.13

ISSN: 1472-6831