8Francis R.Verdun, D.Lepori, et al.Management of patient dose and image noise in routine pediatric CT abdominal examination[J] . Eur Radio 2004, 14: 835-841.
9Brix G, Nagel HD, Stamm G, Veit R, Lechel U, Griebel J, Galanski M, Radiation exposure in multislice versus single - slice spiral CT: results of a nationwide survey [J] . Eur Radiol, 2003, 13 (8): 1979-1991.
10Golding SJ, Shrimpton PC.Radiation dose in CT: are we meeting the challenge [J] .Br J Radiol, 2002, 75: 1 -4.