caa a22 4500 475842332 CHVBK 20180406123904.0 cr unu---uuuuu 170329e20000601xx s 000 0 eng 10.1007/PL00011821 doi (NATIONALLICENCE)springer-10.1007/PL00011821 Rhea J. T. Harvard Medical School, Department of Radiology FH 210, Massachusetts General Hospital, Boston, MA 02114, USA e-mail: rhea.james@mgh.harvard.edu Tel.: + 1-6 17-7 26 83 66 Fax: + 1-617-7266808, US aut CT evaluation of appendicitis and diverticulitis. Part I: Appendicitis [Elektronische Daten] [J. T. Rhea] CT has become the primary imaging modality for evaluation of possible appendicitis. About 20 % of patients taken to surgery for appendicitis without CT have had a normal appendix removed. CT has demonstrated overall accuracy of between 93 % and 98 %. Alternative diagnoses are seen in 34-80 % of patients without appendicitis but who were suspected of having appendicitis. For evaluation of appendicitis different techniques have been successful, including the use of no contrast, use of oral and intravenous contrast, and use of rectally administered contrast. Scanning of the entire abdomen and pelvis and scanning of an area limited to the right lower quadrant are also options. Ultrasonography has been shown to have a role in pediatric patients. If ultrasonography is positive, CT is not necessary. If ultrasonography is negative, CT should follow. American Society of Emergency Radiology, 2000 Key words Appendicitis - Computed tomography - X-ray nationallicence https://doi.org/10.1007/PL00011821 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/PL00011821 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Rhea J. T. Harvard Medical School, Department of Radiology FH 210, Massachusetts General Hospital, Boston, MA 02114, USA e-mail: rhea.james@mgh.harvard.edu Tel.: + 1-6 17-7 26 83 66 Fax: + 1-617-7266808, US aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence SWISSBIB 475842332 BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer