Table 1

Imaging protocol employed in UKLS

	Slim subjects	Standard	Obese
	(<50 kg body weight)	(50–80 kg body weight)	(>80 kg body weight)
kVp setting	90 kVp	120 kVp	140 kVp
mAs settings*		*Depending on the scanner type adjusted to achieve the volume CT dose index (CTDIvol) given.
CTDIvol	0.8 mGy	1.6 mGy	3.2 mGy
Effective dose	<0.4 mSv	<0.8 mSv	<1.6 mSv