3Shrimpton PC and Edyvean S,CT scanner dosime try, Report on a round table meeting establishing a survey of standard dosimetic measurements on CT scanners,held at St George's Hospital,London,18 April 1997[J]. The British Journal of Radiology, 1998,71:1- 3.
4Mahesh M, Scatarige JC, Cooper J, Fishman EK. Dose and pitch relationship for a particular multislice CT scanner[J]. AJR Am J Roentgenol 2001, 177: 1273- 1275.