Estimated Radiation Exposure to the Fetus During Radiographic Examinations

TABLE I-1

Estimated Fetal Radiation Dose From Abdominopelvic Radiography *

PROCEDURE TYPE (# OF CASES)	FETAL DOSE (mGy)		RANGE OF GESTATIONAL AGE
	Range of Dose	Mean	Weeks + Days
Abdominal radiography (n = 19)	0.45–7.20	2.44	1w + 0d–17w + 2d
Abdominopelvic radiography (n = 1)	3.60	3.60	11w + 0d
Pelvic radiography (n = 12)	1.70–9.45	4.77	3w + 1d–18w + 5d

* Adapted and reprinted with permission from: Ozbayrak M, Cavdar I, Seven M, et al. Determining and managing fetal radiation dose from diagnostic radiology procedures in Turkey. Korean J Radiol 2015;16(6):1276-1282.

TABLE I-2

Estimated Fetal Radiation Dose per 100 mAS _effFrom Adominopelvic CT for Several Different MDCT Scanners *

Scanner Model	Tube Voltage (kVp)	Collimation (mm)	Fetal Dose (mGy) per 100 mAs _eff
LightSpeed VCT ^a	120	20	14.35
	140	40	17.92
	140	20	19.31
LightSpeed 16 Pro ^a	120	20	11.54
	120	10	13.54
	140	20	17.92
	140	10	20.91
LightSpeed 16 ^a	120	20	14.18
	120	10	16.56
	140	20	19.94
	140	10	23.29
Sensation 64 ^b	120	28.8	9.64
	120	19.2	10.4
	140	28.8	15.56
	140	19.2	16.79
Sensation 16 ^b	120	24	9.9
	120	18	10.08
	140	24	14.78
	140	18	15.04
Brilliance 64 ^c	120	40	8.63
	120	25	10.12
	140	40	13.65
	140	25	16.02
Brilliance 16 ^c	120	24	10.26
	120	12	11.43
	140	24	14.8
	140	12	16.5
Aquilion 16 ^d	120	32	17.34
	120	16	19.08
	135	32	21.05
	135	16	23.39