Radiologic diagnosis of adenomyomatosis of the gallbladder: Comparative study among MRI, helical CT, and transabdominal US

Kengo Yoshimitsu, Hiroshi Honda, Hitoshi Aibe, Kenji Shinozaki, Toshiro Kuroiwa, Hiroyuki Irie, Yoshiki Asayama, Kouji Masuda

Research output: Contribution to journalArticlepeer-review

51 Citations (Scopus)

Abstract

Purpose: The goal of this work was to evaluate the diagnostic accuracy of transabdominal ultrasound (US), helical CT, and MRI in the diagnosis of adenomyomatosis (ADM) of the gallbladder. Method: Twenty patients with surgically proven ADM were included, all of whom underwent preoperative US, helical CT with 3 mm collimation, and MRI with halfFourier rapid acquisition with relaxation enhancement (RARE). All images were retrospectively reviewed by two radiologists, and the presence of ADM was assessed at three compartments (neck, body, and fundus) of the organ. Receiver operating characteristic analysis was performed, and sensitivity, specificity, and accuracy were calculated for each modality. Results: The Az values (area under the curve) for MRI, helical CT, and US were 0.98, 0.85, and 0.72 for the Reader 1, respectively, showing no statistically significant interobserver difference in any of the three modalities. MRI showed a significantly higher Az value than helical CT or US (p < 0.1). The accuracies of MRI, helical CT, and US were 93, 75, and 66%, respectively. Conclusion: Among the three modalities tested, MRI with half-Fourier RARE sequence was the most accurate for diagnosing ADM.

Original languageEnglish
Pages (from-to)843-850
Number of pages8
JournalJournal of computer assisted tomography
Volume25
Issue number6
DOIs
Publication statusPublished - 2001

All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging

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