1[1]Auylacrt JBCM.Acute appendicitis:US evaluation using graded compression.Radiology,1986,158:355.
2[2]Jr RBJ,et al.Acute appendicitis:Hight-resolution real-time US findings.Radiology,1987,163:11.
3[3]Fa EM.Compression ultrasound as an aid in the differential diagnosis of apendicitis.Surg Gynecol Obstet,1989,169:290.
4[6]Malone AJ,Wolf CR,Malmed AS,et al.Diagnosis of acute appendicitis:value of unenhanced CT.AJR,1993,160:763-765.
5[7]Rao PM,Rhea JT,Novelline RA,et al.Helical CT combined with contrast administeren only though the colon for imaging of suspected appendicitis.AJR,1997,169:1275-1278.
6Caroline E. Blane,Susan J. White,John R. Wesley,Arnold G. Coran. Sonography of ruptured appendicitis[J] 1986,Gastrointestinal Radiology(1):357～360
