論文

査読有り
2005年6月

Enhanced multidetector-row computed tomography (MDCT) in the diagnosis of acute appendicitis and its severity.

Radiation medicine
  • Tesshou Miki
  • ,
  • Seiji Ogata
  • ,
  • Mitsunobu Uto
  • ,
  • Toshihiro Nakazono
  • ,
  • Miyuki Urata
  • ,
  • Ryouhei Ishibe
  • ,
  • Shin Shinyama
  • ,
  • Masayuki Nakajo

23
4
開始ページ
242
終了ページ
55
記述言語
英語
掲載種別
研究論文(学術雑誌)

PURPOSE: To examine the accuracy of enhanced multidetector-row computed tomography (MDCT) in diagnosing acute appendicitis and its severity. MATERIALS AND METHODS: Contrast-enhanced MD-CT 3.5 mm thick images of 23 control patients (A), and 64 patients with surgically proven acute appendicitis including 8 catarrhal (B), 28 phlegmonous (C), and 28 gangrenous (D) appendicitis patients were respectively analyzed. RESULTS: The number of observed major computed tomography (CT) findings for each patient group were as follows: enlarged (> or = 6 mm in maximum diameter) appendix (A: 5, B: 8, C: 28, D: 28), enhancement of the appendiceal wall; hyper (A: 3, B: 8, C: 27, D: 20), iso (A: 15, B: 0, C: 1, D: 2), hypo (A-C: 0, D: 4), and patched (A-C: 0, D: 2) enhancement, appendicolith (A, B: 0, C: 7, D: 13), dirty fat sign (A: 3, B: 1, C: 21, D: 28), localized ascites (A: 2, B: 0, C: 2, D: 11), and abscess formation (A-C: 0, D: 5). From the combinations of these findings, we could differentiate acute appendicitis from the control normal appendix with an accuracy of 99% and could diagnose the severity of acute appendicitis with accuracies of 92% for catarrhal appendicitis, 84% for phlegmonous appendicitis, and 92% for gangrenous appendicitis. We could also visually reconstruct the entire forms and positions of the appendices from the successive CT findings because of the high-resolution thin-slice MDCT images. CONCLUSION: MDCT is highly accurate in the diagnosis of acute appendicitis and its severity.

リンク情報
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/16012400

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