TABLE I.

Comparison of thickness measurements of the phantom taken from the CT or PC based models.

Measurement point	Thickness of point cloud data (cm)	Thickness of CT image (cm)	Error (cm)
Forehead	20.20	19.34	−0.86
Chin	15.30	14.90	−0.40
Neck	13.00	13.49	0.49
SSN	15.70	15.29	−0.41
Xiphoid	21.40	21.24	−0.16
Umbilicus (center)	20.50	20.25	−0.25
Hip/pelvis	22.40	21.50	−0.90
Thigh	16.10	16.43	0.33
Average magnitude of error (std. dev.)			0.48 (0.27)