4Raffensperger JG.Appendicitis.In:Raffensperger JG(ed).Swen-sons Pediatric Surgery.5th ed.New York:Appleton Century Crofts.1990.843-853
5White JJ,Santillana M,Haller JA.Intensive in hospital observa-tion:a safe way to decrease unnecessary appendectomy.Am Surg,1975,41:793-798
6Kottmeier PK.Appendicitis.In:Welch KJ,Randolph JG,Ravitch MM.(eds)Pediatric Surgery.4th ed.Chicago:Year Book Medical Publishers.1986.991-992
7Bolton JP,Craven ER,Croft RJ,et al.An assessment of the value of the white cell count in the management of suspected acute appendicitis.Br J Surg,1975,62:906-908
8Ramachandran P,Sivit CJ,Newman KD,et al.Ultrasonography as adjunct in the diagnosis of acute appendicitis:a 4-year experience.J Pediatr Surg,1996,31:164-169
9Marc SL,Michelle C,Marina C,et al.Selective use of ultraso-nography for acute appendicitis in children.Am J Surg,1999,177:193-196
10Jeffrey RB,Laing FC,Townsend RR.Acute appendicitis:sonogra-phic criteria based on 250 cases.Radiology,1988,167:327
1Yabunaka K1, Katsuda T, Sanada S, et al. Sonographic Examination of the Appendix in Acute Infectious Enteritis and Acute Appendicitis [ J ]. J Clin Ultrasound, 2008, 36 (2): 63-66.
2Garrido E, SanromOn AL, Rodriguez-Gandia MA, et al. Optimized protocol for diagnosis of acute ileitis [ J]. Clin Gastroenterol Hepatol, 2009, 7 (11) : 1183-1188.
3Butt MQ, Chatha SS, Ghumman AQ, et al. R1PASA Score: A New Diagnostic Score for Diagnosis of Acute Appendicitis [J]. J Coil Physicians Surg Pak, 2014, 24 (12): 894-897.
4Wiersma F, Sramek A, Holscher HC. US features of the normal appendix and surrounding area in children [ J ]. Radiology, 2005, 235 (3): 1018-1022.
5Hussain S, Rahman A, Abbasi T, et al. Diagnostic ac- curacy of ultrasonography in acute appendicitis [ J ]. J Ayub Med Coil Abbottabad, 2014, 26 (1) : 12-17.
6Abunaka K, Katsuda T, Sanada S, et al. Sonographic appearance of the normal appendix in adults [ J ]. J Ul- trasound Med, 2007, 26 ( 1 ) : 37-43.
7Ozkan S, Duman A, Durukan P, et al. The accuracy rate of Alvarado score, ultrasonography, and computerized tomography scan in the diagnosis of acute appendicitis in ourcenter [J]. Niger J Clin Pract, 2014, 17 (4): 413-418.
8Karul M, Berliner C, Keller S, et al. Imaging of appen- dicitis in adults [J]. Rofo, 2014, 186 (6) : 551-558.
