Table 2.

Reported Comparative Radiation Effective Dose (E ₂₀₀₇) from Selected Medium and Full FOV CBCT Systems.

				Dosea
			Absolute	Comparative
CBCT unit	Ref.	Technique	Effective dosea (μSv)	Digital panoramic equivalentb	No. of days of annual per capita backgroundc
CB MercuRay	[16]	100 kVp 12-in/9-in/6-in	479/402/369	34/29/26	58/49/45
	[16]	120 kVp 12-in/9-in/6-in	761/680/603	54/49/40	93/83/73
	[17]	Implant mode	511	36.5	62
	[18]	19 cm (Max/Stand)/15 cm Pan/10 cm I	1073/569/560/407	77/41/40/20	131/69/68/50
Galileos	[18]	Default/Maximum	70/128	5/9.1	8.5/15.6
i-Cat Next Gen	[18]	(portrait-17 cm/landscape-13 cm)	74/87	5.3/6.2	9/10.6
i-Cat Classic	[19]	22 cm/13 cm (40 s/10 s)	82/77/48	5.9/5.5/3.4	10/9.4/5.8
	[20]	6 cm Mn (HR/LR)	189/96	13.5/6.86	23/11.7
	[20]	6 cm Mx (HR/LR)	93/59	6.6/4.2	11/7.2
	[20]	22 cm/full	206/134	14.7/9.6	25/16
	[21]	13 cm	61.1	4.4	7.4
Iluma	[18]	20 s/40 s	98/498	7/35.6	11.9/60.6
Newtom 9000	[21]	23 cm	56.2	4	6.9
Newtom 3G	[22]	12-in (Male/female)	93/95	6.6/6.8	11.3/11.6
	[18]	19 cm	68	4.9	8.3
	[19]	6/9/12-in	57/191/30	4/13.6/2.1	6.9/23.2/3.7

^aUsing 2007 ICRP calculations.

^bMedian of published effective dose for digital dental panoramic radiography  =  14 μSv.

^cAnnual per capita  =  3.0 mSv (3,000 μSv) per annum.