3Callaghan J.CT Evaluation of the Pulmonary Artery Size[J].JCAT,1982,6(1):101-103.
4Zwirewich CV,Terriff B,Muller NL,et al.High-spatial Frequency (Bone) Algorithm Improve Quality of Standard CT of the Thorax[J].AJR,1989,153(3):1169-1173.
5Horsfield K,Woldenberg MJ.Diameters and Cross-sectional Areas of Branches in the Human Pulmonary Arterial Tree[J].Anat Rec,1989,223(3):245-251.
8Phillips CG,Kaye SR.Diameter-based Analysis of Branching Geometyy of Four Mammalian Bronchial Tree[J].Respir Physiol,1995,102(2):303-316.
9Phillips CG,Kaye SR,Schroter RCA.Diameter-based Reconstruction of the Branching Pattern of the Humen Bronchial Tree[J].Respir Physiol,1994,98(2):193-217.