Table 4: Dose estimates for the low dose and standard dose CT protocols.

	CTDIvol^a	DLP^b	ED^c	CTDI	DLP and ED
	[mGy]	[mGy x cm]	[mSv]	% dosis reduction to 350 mAs	% dosis reduction to 350 mAs
220 mAs	34.3	466.4	1.07	37%	38%
240 mAs	37.3	495.0	1.14	31%	34%
350 mAs	54.4	748.5	1.72
p-value (220 vs. 350 mAs)	0.00004**	0.00004**	0.00004**
p-value (240 vs. 350 mAs)	0.000001**	0.000001**	0.000001**

^aCTDIvol = weighted volume computed tomography dose index

^bDLP = Dose length product

^cED = effective dose

**significant with p < 0.001.