Table 3.

Scan protocols for a 1-year-old-equivalent phantom with dose reduction achieved and scoring of image quality

Phantom diameter (cm)	Scan protocol	kV	mA	mAs	CTDIw (mGy)	Dose reduction, %	Image quality scoring
10	1	120	32	128	16.59	0	OK
10	2	120	20	80	10.41	37.3	OK
10	3	120	10	40	5.47	67.0	OK
10	4	100	10	40	3.39	79.6	OK
10	5	80	10	40	1.81	89.1	OK
10	6	70	10	40	1.15	93.1	OK
10	7	60	10	40	0.69	95.8	Not OK