3[1]Fairbaim KJ,Mulligan ME,Murphey MD,et al.Gas bubbles in the hip joint on CT:an indication of recent dislocation[J].AJR,1995,164:931-933.
4[2]Patten RM,Dobbin J,Gunberg ST.Gas in the sternoclavicular joints of patients with blunt chest trauma:significance and frequency of CT findings[J].AJR,1999,172:1633-1635.
5[3]Sze MJ,Mulligan ME.Reliability of vacuum phenomenon in the sacroiliac joint as a sign of traumatic injury.Emergency[J].Radiology,2002,9:100-102.
6[5]Zapletal J,Hekster RE,Wilmink JT,et al.Vacuum phenomenon in osteoarthritis of the atlanto-odontoid joint:CT findings[J].Skeletal Radiol,1995,24:131-133.