2Valentin J. Avoidance of radiation injuries from medical interven- tinal procedure[J]. Ann ICRP, 2000, 30:7 - 67.
3Miller DL, Balter S, Cole PE, et al. Radiation doses in interventional radiology procedures: the RAD-IR study pare I: overall measures of dose [J]. J Vasc Inter Radiol, 2003, 14: 711 - 727.
4UNSCEAR. Sources and Effects of loniziong Radiation [ M ]. New York: UN, 2000.