Table 1:

Scan protocols and image quality^{^a}

	200 mAs	150 mAs	100 mAs	50 mAs	25 mAs
70 kV	4	3	3	2	2
80 kV	5	4	3	2	2
90 kV	5	5	5	4	3
100 kV	5	5	5	4	3
100 kV + Sn	3	3	2	2	2
120 kV	5	5	5	4	3
150 kV + Sn	5	5	5	4	3

↵a 5 indicates excellent image quality; 4, good image quality; 3, moderate quality; 2, sufficient for special indications; 1, insufficient.