Table 2. Radiation doses of different tube current.

mA	20	30	50	70	90	100	120	150
CTDIvol (mGy)	0.13	0.2	0.34	0.47	0.61	0.67	0.81	1.01
DLP (mGy*cm)	4.88	7.32	12.19	17.07	21.95	24.38	29.25	36.57
ED (mSV)	0.06	0.10	0.17	0.23	0.30	0.34	0.41	0.51

CTDIvol, volume CT dose index; DLP, dose-length product; ED, effective dose.