Japanese Journal of Radiology

, Volume 35, Issue 7, pp 358–365 | Cite as

The value of initial sonography compared to supplementary CT for diagnosing right-sided colonic diverticulitis

  • Ju Hwa Min
  • Hyun Cheol KimEmail author
  • Sang Won Kim
  • Dal Mo Yang
  • Sun Jung Rhee
  • Jiyoung Oh
  • Sung Eun Ahn
Original Article



The purpose of the study was to assess the value of initial sonography in the diagnosis of right-sided colonic diverticulitis in comparison with supplementary CT.

Materials and methods

A total of 183 consecutive adult patients with right lower quadrant pain (73 diverticulitis, and 110 non-diverticulitis) who underwent both initial sonography and subsequent CT within 24 h were enrolled in this study. Two reviewers retrospectively assessed imaging findings of diverticula, colonic wall thickening, inflammatory pericolic fat, and pericolic abscess for each sonography and CT and then classified each case as non-diverticulitis, simple diverticulitis or complicated diverticulitis. Sonography and CT were independently reviewed at 2-week intervals. The value of initial sonography was assessed through head-to-head comparison with CT results.


Sensitivity, specificity and accuracy for diagnosing diverticulitis were not significantly different between the two modalities (p = 0.366, 0.605 and 0.259, respectively). In addition, the net sensitivity (97.26%) of both sonography and CT was not significantly different from the sensitivity (89.04%) of sonography alone (p = 0.101). Agreement between sonography and CT for the classification of diverticulitis and the four imaging findings was excellent (all κ > 0.8).


Initial sonography can be as effective as CT for the diagnosis of right-sided colonic diverticulitis. Supplementary CT is only needed when sonography is inconclusive.


Diverticulitis Sonography Computed tomography 



Right lower quadrant


Multidetector CT


Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.


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Copyright information

© Japan Radiological Society 2017

Authors and Affiliations

  • Ju Hwa Min
    • 1
  • Hyun Cheol Kim
    • 1
    Email author
  • Sang Won Kim
    • 1
  • Dal Mo Yang
    • 1
  • Sun Jung Rhee
    • 1
  • Jiyoung Oh
    • 1
  • Sung Eun Ahn
    • 2
  1. 1.Department of Radiology, Kyung Hee University Hospital at Gangdong, School of MedicineKyung Hee UniversityGangdong-guRepublic of Korea
  2. 2.Department of Radiology, Kyung Hee University Hospital, School of MedicineKyung Hee UniversityDongdaemun-guRepublic of Korea

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