Navigation and non-navigation CT scan of the sinuses: comparison of the effective doses of radiation in children and adults

Table 1 Comparison of parameters of standard and navigation sinus CT scan protocols for 3 navigation systems

	Stryker		Brainlab		Medtronic
	Non navigation	Navigation	Non navigation	Navigation	Non navigation	Navigation
Field of view	Same during scan	Same during scan	Same during scan	Same during scan	Same during scan	Same during scan
Slice thickness	1 mm or 1.25 mm	1 mm or 1.25 mm	≤ 3 mm	≤ 2 mm	< 3 mm	1 mm
Contiguous scan	Yes	Yes	No: slice thickness < slice distance	Yes	Yes	Yes
Overlapping	No	No	No	No	No	No
Pixel/matrix	Square	Square	Square	Square	Square	Square
Pixel/matrix: minimum size	256 × 256	256 × 256	256 × 256	256 × 256	256 × 256	256 × 256
Pixel/matrix: maximum size	512 × 512	512 × 512	512 × 512	512 × 512	512 × 512	512 × 512

ISSN: 1916-0216