2Seeram E. Computed tomography technology[M]. Philadelphia:WB Saunders Company,1982.89-122
3潘纪,陈起航,刘甫庚.肺部高分辨率CT[M].北京:中国纺织出版社,1994.8-26
4Itoh S, Ikeda M, Arahata S, et al. Lung cancer screening:Minimum tube current required for helical CT[J]. Radiology,2000,215:175-183
5Lucidarme O, Granier PA, Cadi M, et al. Evaluation of air trapping at CT:Comparison of continuous-verus suspended-expiration CT techniques[J]. Radiology,2000,216:768-772
