CT colonography of the normal appendix: Detection and characterization

Craig E. Barnes, Michael Y. Chen, Daniel C. Clark, Allen D. Elster

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


To determine the ability of CT colonography to detect and characterize the normal appendix in adults. A total of 55 patients with CT colonography examinations are analyzed. Each observer detected an appendix in 48 cases (87%), with high interobserver concordance (kappa = 0.679). The appendiceal diameter varied from 3 to 12 mm (mean 6.2 mm) with wall thickness uniformly 1 mm or less. Gas filled at least part of the appendiceal lumen in 37 cases (67%), more frequently in the prone position. Appendicoliths and periappendiceal stranding were seen in 2 and 1% of cases, respectively. An appendix can be reliably identified in approximately 87% of normal adults using CO2- insufflation CT colonography.

Original languageEnglish
Pages (from-to)63-67
Number of pages5
JournalCMIGExtra: Cases
Issue number7
StatePublished - Oct 2004


  • Appendicolith
  • Appendix
  • CT
  • CT colonography
  • Normal appendix


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