Table 1.

Technical characteristics of the digital cephalometric X-ray unit

Parameter	Specification
Active area of detector	CCD-detector, 230 mm × 6.48 mm
Physical pixel size	0.027 mm
Processed pixel size (4 × 4 binning)	0.104 mm
Source-to-detector-distance	1714 mm
Source-to-object-distance (object: median-sagittal plane of patient)	1500 mm
Magnification factor in median-sagittal plane	1.14
Exposition time (slot technique)	4.7 to 9.4 s
Focal spot size	0.5 (IEC 336)