4Malone AJ, Wolf CR, Maimed AS,et al. Diagnosis of acute appendicitis: Value of unenhanced CT. AIR, 1993, 160:763.
5Lane MJ, Katz DS, Ross BA, et al. Unenhanced helical CT for suspected appendicitis. AJR, 1997, 168:405.
6Lane MJ, Liu DM, Huynh MD,et al. Suspected acute appendicitis: nonenhanced helical CT in 300 consecutive patients. Radiology, 1999,213:341.
7Rao PM, Rhea JT, Novelline BA,et al. Helical CT technique for the diagnosis of appendicitis: prospective evaluation of a focused appendix CT examination. Radiology, 1997, 202 : 139.
8Wong SK, Chan LP, Yeo A. Helical CT imaging of clinically suspectedappendicitis: correlation of CT and histological findings. Clin Radiol,2002, 57:741.
9Ege G, Akman H, Sahin A, et al. Diagnostic value of unenhanced helical CT in adult patients with suspected acute appendicitis. Br J Radiol,2002, 75:721.
10Jain KA, Quam JP, Ablin DS, et al. Imaging findings in patients with fight lower quadrant pain: altemative diagnosis to appendicitis. J Comput Assist Tomogr, 1997, 21:693.
