7Rybkin AV, Thoeni RF. Current concepts in imaging of appendicitis[J]. Radiol Olin North Am, 2007;45:411-422.
8Cuschieri J, Florence M, Flum DR, et al. The SCOAP Col laborat ive. Negative appendectomy and imaging accuracy in the Washington State Surgical Care and Outcomes Assessment Program[J]. Ann Surg, 2008, 248: 557-563.
9Benjaminov 0, Atri M, Hamilton P, et al. Frequency of visualization and thickness of normal appendix at nonenhanced helical CT[J]. [J] Radiology, 2002, 225 (2) : 400-406.
10Huwart L, E1 Khoury M, Lesavre A, et al. What is the thickness of the normal appendix on MDCT[J].J Radiol, 2007,188(3ptl):385-389.